How to restore the BIOS of a computer and laptop if it has crashed. An alternative way to modify the AMI BIOS to support processors in the LGA771 design. Which leads to a crash of the BIOS firmware
How to extract Dell BIOS files?
Copy the BIOS.exe file to drive C:
Run Command Prompt in Administrator mode and write this:
cd\
bios.exe /writeromfile
bios.exe /writebinfile
bios.exe /writehexfile
» bios.exe is a file downloaded from the Dell website. "
The unpacked bios file will be copied to drive C:!
Unpacking the new Dell BIOS.
- Download the Python 2.7 interpreter.
https://www.python.org/download/releases/2.7/ - Install Python 2.7 on your computer (exactly this version!).
- with Python script - DecompNewDell.py.
- Copy the DecompNewDell.py script extracted from the archive to the folder with the Python interpreter (usually C:\Python27).
- We also copy our downloaded bios from the dell website to the folder with the interpreter (usually C:\Python27). Rename it to biosupdate.exe. It should look like the photo below.
- Launch the Windows command line in administrator mode and write this:
cd\
cd Python27
python DecompNewDell.py biosupdate.exe
It should look like the photo below.
And in the folder with Python (usually C:\Python27), the file biosupdate.exe_decompressed.hdr will appear.
- with the PFSExtractor.exe program, extract the program to the same folder where we created the .hdr file (usually C:\Python27).
- On the Windows command line we write:
PFSExtractor biosupdate.exe_decompressed.hdr
It will turn out like in the photo below.
And the folder biosupdate.exe_decompressed.hdr.extracted will be created, inside which there are all extracted files from which you can collect a dump for flashing the firmware on the programmer. Ready!
There are probably no users today who have not heard of BIOS. Beginner users (some have been in the beginner state all their lives) are afraid of this very BIOS like fire and have no idea how to enter it, let alone configure it. Well, experienced users or, as they are commonly called, computer enthusiasts, not only configure the BIOS system, but also reflash it. It should be noted that the BIOS flashing procedure even for specialists causes a surge of adrenaline, since it is by no means safe and often poses a threat to life. However, the procedure for flashing the BIOS is still a piece of cake. Much more extreme is modding, or editing, BIOS, which will be discussed in this article.
Before we start talking about ways to edit the BIOS, let us briefly recall what a BIOS is, what capabilities it provides to the user, and why it should be updated, much less edited.
What is BIOS
BIOS (Basic Input/Output System) is a basic input/output system. More precisely, BIOS is a system for configuring and managing memory, processor, chipset, controllers integrated on the board and devices connected to the board. Unlike most other programs, the BIOS is not located on the hard drive, but on a special self-powered chip on the motherboard.
A lot depends on the BIOS in a computer. In fact, the BIOS defines the system settings that determine the functionality and performance of the PC. Often, the first BIOS versions with which motherboards appear are replete with “bugs” that disappear only in subsequent versions.
The BIOS system is included in any motherboard (with the exception of motherboards for Apple computers), whether it is intended for a desktop PC or a laptop. However, traditionally, the BIOS for a laptop has a minimum of settings and is more of an informational nature. As for the BIOS of a desktop PC motherboard, it allows you to make a fairly large number of settings that affect both system performance and functionality. In particular, traditional system overclocking, which involves increasing the processor clock frequency, changing the processor supply voltage, changing the clock frequency, timings and memory supply voltage, is done in the BIOS settings. In addition, in some cases, the BIOS allows you to configure the speed mode of the fan installed in the processor cooler and additional fans installed in the system, configure a RAID array of hard drives if this array is based on a controller integrated into the chipset, and also perform a lot of other fine adjustments to your computer.
The BIOS is located in a ROM memory chip (Read Only Memory), which ensures that the BIOS is always available regardless of the functionality of components external to the motherboard (for example, boot disks). Because RAM (random access memory) is accessed much faster than ROM, many manufacturers provide automatic copying of the BIOS from ROM to RAM when power is turned on. The area of RAM used in this case is called Shadow ROM.
Currently, most modern motherboards are equipped with Flash BIOS chips, the code in which can be rewritten using a special program. This approach provides the ability to update (new firmware version) the BIOS.
There are not so many BIOS kernel manufacturers. The most common BIOS are from AMI (American Megatrends, Inc.), AWARD and Phoenics Technologies. Other BIOS (from FirmWorks, Micro Firmware, etc.) are much less common. AMI BIOS currently dominates the market, so in the future we will focus on ways to flash and modify it.
Naturally, each manufacturer makes its own changes to the basic BIOS version, and, of course, one or another BIOS version is intended only for a specific product (computer or laptop) and is incompatible with other solutions.
Finally, we note that BIOS chips currently use two interfaces to connect to the motherboard: either the LPC (Low Pin Connection) bus or the new SPI (Serial Peripheral Interface) bus.
Why flash the BIOS?
All manufacturers of motherboards and laptops strongly do not recommend flashing the BIOS unless absolutely necessary. Moreover, representatives of service centers constantly turn to motherboard manufacturers with a request to completely block the user’s ability to flash the BIOS. Of course, this idea is absurd and this will never happen, but we emphasize once again that the BIOS flashing operation is unsafe and can pose a threat to life. If the board or laptop is working fine, then there is no point in updating the BIOS.
At the same time, situations often arise when updating the BIOS is necessary. For example, you purchased a motherboard with a processor and found out that they are incompatible with each other. Most likely, the problem is that your motherboard is running an old BIOS version that does not support the new processor. The only option in this case is to find the old processor and update the BIOS on the board.
In addition, each new BIOS version corrects errors made in previous versions, so updating the BIOS is very useful.
The most secure in terms of BIOS flashing procedures are motherboards from Gigabyte, ASUS and MSI, which implement protection against unsuccessful BIOS flashing. Gigabyte motherboards are equipped with two BIOS chips (DualBIOS technology), and if the BIOS is not flashed correctly and the system cannot start, the BIOS emergency recovery procedure from the backup chip automatically begins.
On new ASUS motherboards, the BIOS emergency recovery technology is called ASUS CrashFree BIOS 3. The essence of this technology is that in the event of a BIOS crash or a checksum mismatch after unsuccessful firmware, a program is automatically launched that searches for the BIOS on a CD/DVD disk, floppy disk, or flash drive (with FAT/FAT32 file system). If a file is found on some media, the recovery procedure starts automatically.
A similar technology, called M-Flash, is available on MSI boards. The only difference is that the BIOS file must be on a flash drive.
Methods for flashing BIOS
All motherboard manufacturers, along with new BIOS versions, post utilities for flashing their firmware, as well as detailed instructions on how to flash the BIOS. Alas, there is simply no universal toolkit for flashing the BIOS. In general, there are three ways to flash the BIOS: from DOS, from the Windows operating system, and directly from BIOS.
Actually, there is nothing special to talk about about methods for flashing the BIOS from under BIOS and using a proprietary utility from under the Windows operating system. Everything here is simple and clear. Moreover, the method of flashing the BIOS from under BIOS is the simplest and safest, however, alas, not all manufacturers support this function. The only exceptions are ASUS and Gigabyte.
Moreover, not all manufacturers provide their boards with utilities for flashing the BIOS from Windows, and in some cases, flashing from DOS is the only possible method.
The method of flashing the BIOS from DOS can be called classic, but also the most inconvenient. The fact is that, in addition to the availability of the appropriate DOS utility, this flashing method involves booting the computer not from the hard drive, but from external media. Previously, ordinary 3.5-inch boot floppy disks with DOS were used for this, and the BIOS file itself and the DOS flashing utility were written to this floppy disk, along with the operating system. However, at present, 3.5-inch floppy disks, like the floppy drives themselves, can be considered obsolete devices. Many modern motherboards do not even have a connector for connecting a floppy drive, and laptops with 3.5-inch floppy drives have not been produced for a long time. However, this is not even the problem with this method of flashing the BIOS. In the end, you can find a 3.5-inch floppy drive with a USB interface, but this is unlikely to solve the problem. The fact is that a modern BIOS can be several megabytes in size and simply cannot fit on a floppy disk.
In principle, you can try to solve this problem by using a bootable flash drive with a DOS kernel instead of a boot floppy. But even in this case, complications arise. First of all, you need to find a utility that will allow you to make the flash drive bootable, and the system files of the DOS operating system. On the Internet you can find several utilities that allow you to make bootable flash drives with DOS, the most famous of them are the HP USB Disk Storage Format Tool and BootFlashDOS, which are freely available on the Internet.
The HP USB Disk Storage Format Tool allows you to create bootable flash drives if you have DOS system files, that is, it also requires the files themselves. However, on torrent resources you can find assemblies that include DOS system files.
If you use flash drives with a capacity of less than 4 GB, when formatting and creating a bootable flash drive using the HP USB Disk Storage Format Tool utility (Fig. 1), you can use the FAT or FAT32 file system, but if you use a flash drive with a capacity of more than 4 GB, then a file system is required FAT32.
Rice. 1. Creating a bootable flash drive with DOS
using the HP USB Disk Storage Format Tool
The BootFlashDOS utility allows you to create bootable flash drives with DOS by pressing just one button, since all the necessary system files are already included in the utility itself (Fig. 2).
Rice. 2. Creating a bootable flash drive with DOS using the BootFlashDOS utility
In principle, if you create a bootable flash drive with DOS, then there will be no problems with flashing the BIOS. It is enough to copy the DOS utility for flashing the BIOS and the BIOS file itself to a bootable flash drive and boot the computer from the flash drive. To boot your computer from a flash drive, you need to insert it into the PC, reboot, or simply turn on the computer and at the boot stage enter the BIOS to set the settings to boot from a USB Flash Drive. Next, having saved the settings, reboot the computer and, having loaded DOS, execute the required command on the command line in accordance with the BIOS manufacturer’s instructions.
We will give examples of executing such a command a little later, but for now we’ll look at another way to flash the BIOS from DOS. It consists in using a bootable CD/DVD instead of a bootable flash drive. It’s hardly worth reinventing the wheel here - it’s better to use a ready-made Hiren’s BootCD (current version 10.4), the image of which can be downloaded from the website www.hirensbootcd.net. If you use the Hiren's BootCD boot disk, you will additionally need a flash drive (with a FAT or FAT32 file structure), on which the DOS utility for flashing the BIOS must be written, and the BIOS file itself.
Now let's look at the procedure for flashing the BIOS from DOS using the example of an MSI GX640 laptop with AMI BIOS. On MSI laptops, there is only one way to flash the BIOS from DOS using the proprietary DOS utility included with the BIOS file itself. Actually, all that is needed to flash the BIOS is to create a bootable flash drive, download from the MSI website an archive with all the necessary files, which includes the BIOS file, the flashing utility and the flash.bat executable file with the prescribed sequence of all actions. After this, you should unzip this archive onto a bootable flash drive and, after booting from the flash drive, run the flash.bat file for execution. The main thing is that all unzipped files are in one folder (you can unzip them to the root directory of the flash drive).
In general, it should be noted that for each type of BIOS (AMI, Award) there are specialized utilities from AMI and Award for flashing. For example, from the AMI company website you can download the amiflash package, which includes the afudos and afuwin utilities, which allow you to reflash the AMI BIOS from DOS and from Windows, respectively. However, you need to keep in mind that AMI BIOS can be either a classic AMI BIOS or an AMI Aptio BIOS. Aptio is a type of AMI BIOS, but the main thing is that AMI BIOS and Aptio AMI BIOS use different utilities afudos and afuwin.
In addition, many motherboard manufacturers make such significant changes to the BIOS for their products that the universal AMI or Award utilities simply do not recognize them and, therefore, cannot reflash them. In particular, in the previously discussed example with the AMI BIOS of the MSI GT640 laptop, the afudos and afuwin utilities do not recognize it as an AMI BIOS and, naturally, cannot reflash it.
In general, the situation when it comes to modified versions of AMI BIOS, which are defined as AMI BIOS by the AMI utilities themselves, occurs quite often. These include many MSI boards and many Gigabyte boards. The only ones not seen in such “show off” so far are ASUS boards, the BIOS on which can be flashed using utilities from AMI (although, of course, utilities supplied by ASUS itself are better suited).
Why modify the BIOS
So, we have looked at the main ways to flash the BIOS, and now we will discuss how you can modify it. Naturally, the question arises: why modify the BIOS at all? One can argue endlessly about this, as well as about whether it is necessary to overclock a computer. Actually, if the BIOS modding procedure is possible in principle, there will always be enthusiasts who will do it.
Just a few years ago, few people thought about the possibility of editing the BIOS themselves. However, recently this procedure has become popular, and on the Internet you can find many resources dedicated to BIOS modding. Interest in this issue can be explained by the fact that recently many users have begun to flash the SLIC table in their BIOS, and this is one of the options for modding, or editing, the BIOS. The procedure of flashing the SLIC table in the BIOS itself is quite legal, but the purpose for which it is done, of course, is already illegal - this is precisely what explains the popularity of this procedure.
Let us briefly explain what we are talking about. Flashing the SLIC table in the BIOS is used to implement the OEM activation mechanism for the Windows 7 operating system in the same way that Microsoft OEM partners do to activate pre-installed copies of Windows without Microsoft verification. This method allows you to activate the system if three conditions are met: the use of a special OEM key and OEM certificate, as well as the presence of an SLIC table in the computer BIOS.
Windows 7 requires SLIC tables version 2.1 in the BIOS, and there is no strict binding of the OEM key to the SLIC table and certificate. The key is tied only to the Windows edition and allows you to activate both x86 and x64 versions of the OS. The file certificate and SLIC tables are interrelated, and for successful activation both components must be from the same OEM partner.
We will not tell you how to illegally activate Windows 7, but we will focus on the procedure for inserting an SLIC table into the BIOS. Let us immediately note that this is not always possible and not all BIOS can be edited in any way.
On the Internet you can find a package of software tools (AMITool), containing both the SLIC tables themselves and a utility (AMI SLIC Mod) for flashing them into the AMI BIOS. However, for this you need to use AMI BIOS on your board, but even in this case there is no guarantee that the procedure for flashing the SLIC table in the BIOS will be possible. As we have already noted, many manufacturers modify the BIOS for their products in such a way that the AMI SLIC Mod utility simply does not recognize it as an AMI BIOS, and therefore cannot modify it.
However, even in this case, you should not despair and run to the store for another motherboard. Before attempting to flash an SLIC table in the BIOS, you should check whether it is missing from the BIOS. If you bought a motherboard or laptop recently, then it may well turn out that the version of the SLIC table you need (version 2.1) is already available in the BIOS.
You can view the version of the SLIC table in the BIOS using the specialized utility RW - Read & Write Utility (current version 1.4.7), which can be downloaded from the website http://rweverything.phpnet.us. Another name for this utility is RW-Everything.
Having installed this utility, launch it and in the main program window on the toolbar, click on the button labeled ACPI. In the ACPI Table window that opens, click on the SLIC tab. Next, you need to view the table in hexadecimal format and find a line in it starting with byte 53 20. If the next four bytes are 00 00 00 00, then the BIOS has the SLIC table version 2.0 flashed, and if - 01 00 02 00, then the SLIC table is flashed table version 2.1 (Fig. 3).
Rice. 3. Determining the BIOS SLIC table version
Of course, embedding a SLIC table into the BIOS is far from the only option for possible modding. Another modding method is to unlock some BIOS features. Indeed, motherboard manufacturers often deliberately block some BIOS functionality in order to simplify the Setup BIOS setup procedure. They also disable those functions that are not present in a particular motherboard, but can be used in the following modifications.
Using specialized utilities, you can try to unlock all disabled functions and options in the BIOS. In addition, you can change logos (some motherboard manufacturers, such as ASUS, even supply special utilities for changing the BIOS logo), as well as some names, so that, for example, when booting, not the real name of the processor is displayed, but something like “AMD Core i9 -995".
Another example of BIOS modding can be given. Some craftsmen manage to unlock the ability to use the SLI mode for NVIDIA video cards through the BIOS on those motherboards where this mode is not provided. Actually, if a board officially supports SLI mode, then its BIOS has the corresponding key from NVIDIA. The idea of modding is to cut this key from the BIOS of the board on which SLI mode is officially supported, and insert it into the BIOS of the board on which SLI mode is not supported (that is, in the BIOS without the NVIDIA key). In particular, there are examples of how, due to such modding, the SLI mode was activated on boards based on the Intel P45 Express chipset.
However, let's move from theory to practice and discuss editing BIOS, in particular editing AMI BIOS as the most common.
Editing AMI BIOS
To edit a BIOS with an AMI kernel, you will need the AMIBCP utility, which, by the way, is produced by AMI itself. This utility can be downloaded either separately or as part of the AMI BIOS ROM Utilities package. It should be noted that since, as we have repeatedly emphasized, manufacturers of motherboards and laptops make changes to the AMI BIOS for their products, there is no guarantee that the AMIBCP utility will recognize the BIOS. Alas, not every BIOS can be modified. As practice shows, the BIOS of ASUS and ECS boards can be edited without problems, but for boards from Gigabyte and MSI the AMIBCP utility is powerless.
So, let's return to the consideration of editing the BIOS in the case where this is possible. The AMIBCP utility (version 3.x) runs under the Windows operating system, but it should be noted that there are versions of the same utility for DOS.
After downloading the utilities, you need to open the BIOS file. In our example, we will look at editing the AMI BIOS for the ASUS P6X58D-E motherboard using the AMIBCP v.3.37 utility. We will edit the P6X58DE.ROM file.
So, in the main program window we load the BIOS file that we will modify (Fig. 4).
Rice. 4. Main window of the AMIBCP v.3.37 utility
First of all, the Setup Configuration tab is interesting, in which, in fact, the BIOS settings are modified. The left window of this tab displays the main BIOS settings menu. If you uncheck a menu item, it will not appear in the BIOS menu. In the example considered (see Fig. 4), we unchecked the Ai Tweaker and Advanced checkboxes, thereby blocking all options for overclocking the system. That is, the BIOS menu items, in which you can view information about the processor and memory, as well as change frequencies, supply voltage, etc., will simply be absent in the modified version of the BIOS.
The situation is similar when expanding the tree structure of each item in the BIOS setup menu: if you uncheck any sub-item, it will not appear in the BIOS menu. For example, if we do not want the Intel PPM Configuration item to be displayed in the Advanced settings menu, we simply need to uncheck the corresponding item (Fig. 5).
In order to block any option in the BIOS setup menu, just set the value to No in the Show column for the corresponding item. Such blocked elements will (after saving the changes) be highlighted with a green bar.
For example, if our system does not have additional fans installed in the case and we do not want their settings items to be displayed in the BIOS, then we enter the Power menu, then open the Hardware Monitor menu and for the options Chassis Fan 1 Speed, Chassis Fan 2 Speed, For Chassis Fan 3 Speed, Chassis Q-Fan Profile and Power Fan Speed, set the value to No in the Show column (Fig. 6).
Rice. 6. Blocking the display of various setup menu options in the BIOS
It should be noted that BIOS P6X58DE.ROM for the ASUS P6X58D-E board does not allow any improvements using the AMIBCP v.3.37 utility. All options in it are unlocked, so the maximum that can be done is to block what is not needed (though it is not clear why to do this).
You can also try to change some of the inscriptions, but keep in mind that the inscriptions will not be displayed in Russian. For example, if we want the string ComputerPress P6X58D-E BIOS Edition to be displayed instead of the string ASUS P6X58D-E ACPI BIOS Revision 0106 when loading, then just find the string ASUS P6X58D-E ACPI BIOS Revision 0106 on the BIOS Strings tab and change it to the specified one .
We just have to consider one more type of BIOS modding - changing the background image (logo) of the BIOS. At the same time, ASUS even supplies its boards with a special utility that allows you to implement this feature. Of course, for ASUS boards it is easiest to use this utility. However, for AMI BIOS you can also use the OEM LOGO utility from AMI itself (Fig. 7).
Rice. 7. Changing the BIOS logo using the OEM LOGO utility
The interface of this utility is very simple and does not require any comments. Just load the BIOS and specify the path to the file with the new logo. The only limitation is that the drawing must be of a certain resolution and format.
Hello, dear readers of the site! My name is Roman Nakhvat and I present to your attention the third and final part of the article about restoring damaged BIOS firmware (using the example of an Acer Aspire E1-532 laptop). Before reading this part of the article, it is recommended that you familiarize yourself with and, in which we disassembled the Acer Aspire E1-532 laptop, removed the motherboard from it, connected the CH341A programmer to the BIOS chip and saved the damaged BIOS firmware in a separate file. Let's continue our work by preparing a new BIOS firmware file and then write it to the BIOS chip.
Restoring damaged BIOS firmware on a laptop using a programmer, if the laptop does not boot. Part 3. Extracting BIOS firmware from an exe file to update the BIOS. Editing the firmware file in a HEX editor and writing it to the BIOS chip
Let's go to the Acer company website to the support page for the Acer Aspire E1-532 laptop.
And we will download all available BIOS firmware.
For example, let's open the folder with firmware version 2.10.
In this folder we see a regular exe file, let's run it.
After running the V5WE2210.exe file, we get this error window, which states that this BIOS firmware is not suitable for this laptop or computer. We don’t press the OK button yet, since we need to extract the BIOS firmware file for our Acer Aspire E1-532 laptop from the V5WE2210.exe file.
Go to section C: along the way
C:\Users\Username\AppData\Local\Temp (the username can be anything depending on what name the account was created with). In the Temp folder we see the temporary folder 7zS2C4E.tmp, which appeared after running the V5WE2210.exe file.
Let's open the 7zS2C4E.tmp folder and see the isflash.bin file in it, which is the BIOS chip firmware file. Let's copy this file to a flash drive.
The isflash.bin file copied to the flash drive.
The size of this BIOS firmware file is 9.45 MB.
When we try to open this firmware file in the CH341A-USB program, we receive a message that the file size is larger than necessary, that is, this firmware file is too large to be used to flash the Winbond W25Q64FV chip (namely, this chip is installed on the motherboard of an Acer laptop Aspire E1-532).
Microcircuits can be of different sizes; let’s look at this using Winbond microcircuits as an example. As can be seen from the table, the capacity of the microcircuit can be 512, 256, 128, 64, 32 Mbit and so on.
The W25Q64FV chip has a capacity of 64 Mbit (or 8 MB).
Since our BIOS firmware file isflash.bin, extracted above from the exe file, weighs 9.45 MB, and the volume of the BIOS chip on the motherboard of the Acer Aspire E1-532 laptop is 8 MB, then to successfully restore the BIOS firmware we need to reduce the isflash.bin file from 9.45 MB to 8 MB. For these purposes, we will use a hex editor, for example HxD. Let's go to the address
https://mh-nexus.de/en/downloads.php?product=HxD20
and download the hex installation file for the HxD editor
Click on the downloaded file and start the installation.
Install.
Installation completed.
Click on the hex shortcut of the HxD editor and launch it.
HxD main window.
Click on File-Open.
Select the isflash.bin file and click "Open"
We get the following.
In the same way, open the file of the damaged BIOS firmware isflash01.bin (which we saved in the second part of the article).
Let's take a closer look at the structure of the isflash01.bin file. As you can see, the firmware file isflash01.bin starts with the values FF (line 00000000), and line 00000010 contains the values 5A A5 F0 0F.
Now let's look at the structure of the isflash.bin file. We see that this firmware file starts with the values 4D 5A 00 00 (line 00000000). We need to make sure that the isflash.bin file begins in exactly the same way as the isflash01.bin file, that is, that the beginning of the isflash.bin file is FF (line 00000000).
In the open isflash.bin file, click Search-Find.
And we search for the value 5A A5 F0 0F.
We see that the value 5A A5 F0 0F in the isflash.bin file is located in line 0001F340, and we also see the FF values higher in line 0001F330.
In the isflash.bin file, select the range of lines 00000000-0001F320. To do this, select Edit-Select block.
We indicate the starting (00000000) and ending (1F320) lines of the allocated range.
The selected row range is 00000000-1F320.
Delete the selected range of lines from the isflash.bin file by clicking Delete.
As you can see, after deleting the selected lines, the isflash.bin firmware file now begins in exactly the same way as the isflash01.bin file, namely, line 00000000 contains the values FF, and line 00000010 contains the values 5A A5 F0 0F.
Let's return to the firmware file isflash01.bin. Let's scroll to the end and see that it ends with line 007FFFF0.
If we scroll to the end of the isflash.bin file, we see that it ends with the line 009548F0.
Let's remove all lines from the isflash.bin file that are in the range 00800000-9548F0, that is, we'll make the isflash.bin file end with the line 007FFFF0. Click Edit-Select block.
Specify the range of selected rows.
The selected row range is 00800000-9548F0.
Delete the selected period range 00800000-9548F0 by clicking Delete.
As you can see, the isflash.bin firmware file now ends with line 007FFFF0.
Save the BIOS firmware file under a new name by selecting Save as...
Specify a name, for example isflash_new and click Save.
New BIOS firmware file isflash_new.bin.
It should be noted that the isflash_new.bin file weighs the same as the isflash01.bin file that we saved in the second part, namely 8 MB.
Since the W25Q64FV chip, as mentioned above, has a capacity of 64 Mbit (or 8 MB), and our edited firmware file isflash_new.bin weighs 8 MB, then we can start flashing. We connect the CH341A programmer to the BIOS chip in the same way as we did in the second part of the article.
Launch the CH341A-USB program. We indicate the manufacturer and model of the chip and delete the old BIOS firmware by clicking “Erase”.
A universal program for removing firmware and BIOS backups from any models of laptops and personal computers.
A dump must always be done when we want to do a firmware update, update or rollback of the BIOS. Sometimes you are asked to make a copy of the BIOS of a laptop or motherboard of a personal computer in order to repair similar equipment.
What is BIOS and what does this abbreviation stand for?
BIOS is an abbreviation for the English words Base_Input_Output_System and is translated as basic_input_output_system
Making a BIOS dump of laptops and computers using this program is very easy and simple.
Brief instructions on how to use the Universal BIOS utility Backup ToolKit 2.0 program to create a bios damp, or in Russian, a backup copy.
Video instructions for working with this program.
Many antivirus programs identify this program as a virus, but it is not.
After downloading, you can check this archive on the website www.virustotal.com which will say that half of the antiviruses will find various viruses in it, and the other half will not.
My AVG also detects it as a virus. And on the beech, Casper says that everything is fine.
After checking this file, see if your antivirus finds a virus in it. If so, disable it while the program is running.
Then unpack the archive and run the resulting file named Universal BIOS Backup ToolKit 2.0.exe
If your system says that administrator rights are required. Then right-click on this file and click on Run as administrator.
After this, a program window opens in which we see information about the type, version, size, manufacturer and date of your BIOS.
After this, click the Read button and wait until the BIOS reading process is completed.
After this, a sign will appear indicating that reading the BIOS was completed successfully.
Click OK. Then click the Backup button.
We are asked to choose a location where we will save the BIOS dump. Select the desired folder and click the save button.
We all made a backup copy of the BIOS, you can update the version, flash a new or old stable version of the BIOS.
