Thanks a million!...

Hello,
Please, I have an HP Elitedesk 800 G6 Mini Desktop with a BIOS issue. I get the Main + EC bin from another same model HP 800 G6 Mini unit, I modified the BIN files to unlock MPM, and flashed them to the issues system. However, it doesn't work properly.
After flashing the unlocked Main + EC to issue unit, everything seems to function normally until I perform a "Restore Factory Defaults" in the BIOS. After that, the system fails to POST; it powers on, but the screen remains black. (I also tried clearing the EC and flashing only the Main firmware, but the same issue ...

Hello,
Please, I really apreciate if you can help me with one more information.

I would like to save to reuse the Windows activation key from the old BIN file with issues so I can reinsert it later when tattoo with DMI after fix the System with new BIN file.

In the line 01 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 1D 00 00 00, it’s possible to locate the activation key, but to write it along with the DMU using the HP BCU tool, it requires a different format with the MS Digital Marker. Is there a way to locate this MS Digital Marker key in BIN file or convert...

Hello, Sfefan!
Again thanks a lot for help and explanation.

Please, have you some tools or easy type to recalculate the CRC and update the BIOS BIN file with changed MAC Address? (I tried to use the UEFI_Tools NE to extract the Gbe Region, change with Phyton acript attached, and after Rebiuld again, but is not easy....).

Or if I change only first two digits of MAC Address is not necessary to recalculate the CRC?

Example: From 7C:57:58:6C:F0:5A to 8C:57:58:6C:F0:5A (If I use this same BIN file to fix other unit I will need to change the MAC Address...

Hi, Stefan!
I would like to express my sincere gratitude for you help. After applying the modified BIN file, the onboard network card is now functioning perfectly😁

Please, I would be very grateful if you could explain what other changes are necessary—besides modifying the MAC address at line 00001000 for the NIC to work properly when I change the MAC address?

Best regards,
Vilmar...

Thanks a million! I'll test it later today....

Hello, Stefan!
Thanks a million.

The Main+EC Bin files that worked fine are from the below link that I download.

Files download: https://www.badcaps.net/filedata/fetch?id=3672350
- HP EliteBook 640 14 inch G9 U75 CLEAN UNLOCKED MAIN+EC.zip (26.59 MB, 89 views)

I want chage the MAC Address 7C:57:58:6C:F0:5A from these BIN to my MAC Address: 48:CA:84:9B:FE:AC

Have a great day!
Vilmar...

Hello,
Please, someone could help me?

I used the below Main Bios + EC that rex98 shared for fix one Notebook Serial BRJ32683B7 HP 640 G9 with BIOS issues.

Files: HP EliteBook 640 14 inch G9 U75 CLEAN UNLOCKED MAIN+EC.zip

After applied these files Main+EC in the unit it Works very well, but I need change the MAC Address. And when I changed the line 1000 of Main BIN file with new MAC Address and re-applied these files in the Main + EC Chip the NIC stoped works with erro code 10.

Attached the Picture.

Best Regards,
Vilm...