Help HP Elitedesk 800 G6 Mini PC LOCKED BIOS

[Stefan Steff]

please help me, i lost power during bios update and now it's showing 6 red flash and 3 white

Try this bios file and provide feedback.
The 128Mb EC file remains as is,
I hope you know how to use the BCU tool to re-insert your DMI data...

[robert99.9]

SN: 8CC20614ZT

[SMDFlea]

Post the PC serial number

[robert99.9]

please help me, i lost power during bios update and now it's showing 6 red flash and 3 white

[Al3xxxinho]

Sorry, I have written the S/N below:
- dump.bin - SN: 8cc1070m6w
- hp_bin.bin - SN: 8cc1291gnt

[SMDFlea]

I had 2 desktops with a locked bios. I desoldered the chip from the 2nd unit, dumped the bios, verified the dump and then used RC Unlocked V1_0 to fix the dump.
After writing the dump to the chip and resoldering it I get the same LED sequence on the 2nd unit. Seems like my RC_Unlocker is corrupting the files somehow.
Can anyone help me unlock the attached files?

Thanks!

post the serial numbers https://www.badcaps.net/forum/troubl...30#post1847530

[Al3xxxinho]

I had 2 desktops with a locked bios. I desoldered the chip from the 2nd unit, dumped the bios, verified the dump and then used RC Unlocked V1_0 to fix the dump.
After writing the dump to the chip and resoldering it I get the same LED sequence on the 2nd unit. Seems like my RC_Unlocker is corrupting the files somehow.
Can anyone help me unlock the attached files?

Thanks!

[Al3xxxinho]

I've looked around the chip and all is fine. I do have soldering experience so that shouldn't be an issue. I will desolder the chip again today and have a better look.

After desoldering I erased the chip and used the below file to flash it

GD25B127D@SOP8-200_20230917_174205_unlocked.rar (7.64 MB, 25 views)

In ASProgramer I've selected GD25Q127C

After resoldering the chip, the led error is gone, computer powers up, fans are spinning but no image is displayed.

Later edit: After leaving it on for a while, the image was displayed. Now bios is unlocked, the only error I am getting is related to HP Enpoint Security,

[hoaca388]

Hello,

I need some help as I believe I may have made a mistake.
I have an HP 800 G6 DM, and I desoldered the EC chip from the motherboard (GigaDevice 25B127DSIG). Using NeoProgrammer, I dumped the ROM and then attempted to unlock it with RC Unlocker. However, after flashing the unlocked file back, the password was still present.

Because I am an idiot, I flashed an unlocked firmware from this page back to the chip and after doing so, my computer won't boot anymore - it shows an error pattern of 5 red blinks and 2 white blinks.

Even after restoring the original dump, the issue persists with the same 5 red and 2 white blinks.

I've attached both the original and unlocked files for reference.

Thank you for your help!

Look around the bios chip there are very small components, do you accidentally move them ?

[Al3xxxinho]

Hello,

I need some help as I believe I may have made a mistake.
I have an HP 800 G6 DM, and I desoldered the EC chip from the motherboard (GigaDevice 25B127DSIG). Using NeoProgrammer, I dumped the ROM and then attempted to unlock it with RC Unlocker. However, after flashing the unlocked file back, the password was still present.

Because I am an idiot, I flashed an unlocked firmware from this page back to the chip and after doing so, my computer won't boot anymore - it shows an error pattern of 5 red blinks and 2 white blinks.

Even after restoring the original dump, the issue persists with the same 5 red and 2 white blinks.

I've attached both the original and unlocked files for reference.

Thank you for your help!

[macmino]

the issue is that. I'm facing a lot of issue with the micro clamp connector: the yellow led "RUN" on the usb key sometime disappear completely while I'm dumping. Probably I have to change clamp and use another method

[SMDFlea]

I tried to enable and disable it, no success

Did you make a backup of the original bios. Which bios did you flash,from which post ?

[macmino]

I tried to enable and disable it, no success

[SMDFlea]

well, I bought different cables and now I successfully dumped the old bios, so it was just a cable and connector stuff. If I put the file into the RCUnlocker it says: "Missing unlockable Content"
I noticed that during the writing of the Unlocked Image (fond in this forum) I received an alert from the Programmer saying it has hit an error, so I clicked continue and the Programmer stuck.

BTW now I successfully installed the new unlocked version! hooray!!! The HP now give me the ability to enter into the BIOS and Security settings but I have a message at the beginning: "HP Endpoint Security Controller Problem"....even if I update the BIOS from the Windows itself (and all the HPs software) I'm not able to remove this message..I simply hit ok and then the boot continues. What can I do now? I THANK YOU !!!

Enable secure boot if its not already enabled.

[macmino]

well, I bought different cables and now I successfully dumped the old bios, so it was just a cable and connector stuff. If I put the file into the RCUnlocker it says: "Missing unlockable Content"
I noticed that during the writing of the Unlocked Image (fond in this forum) I received an alert from the Programmer saying it has hit an error, so I clicked continue and the Programmer stuck.

BTW now I successfully installed the new unlocked version! hooray!!! The HP now give me the ability to enter into the BIOS and Security settings but I have a message at the beginning: "HP Endpoint Security Controller Problem"....even if I update the BIOS from the Windows itself (and all the HPs software) I'm not able to remove this message..I simply hit ok and then the boot continues. What can I do now? I THANK YOU !!!

[macmino]

a little progress here: I finally received the programmer but when I connect it to the motherboard, I receive this message:

[B]IC Not Responding[/B]

only once I got the message

File size larger than IC size

while using the ASprogrammer 2.1.0.13...I was able to read but not to write

any idea? thanks a lot !


ps: the current is 3.3, just checked it out

[macmino]

Ok, now the programmer has arrived and I did probably some mistakes because now I see the message "HP Endpoint Security Controller Problem: There is a problem with the HP Endpoint Security Controller on the unit, please contact HP Inc to have the unit serviced"

what can I do now?

thanks

[macmino]

sorry, cross posted after searching other informations...I'm waiting for the USB programmer, and so tomorrow I should dump/flash it back and keep you posted. Thanks again...and BTW, ehy, the post now is on top

cheers

[macmino]

hi, I'm in a rabbit hole: I have the "OK" from the RCUnlocker_v_1_0 and so I loaded the 16MB "800G6_EC_RCunlocked_unlocked.BIN" inside the NeoProgrammer 2.2.0.10. If I click "Detect" I only see:

Connecting Error CH341 (Not found)
Connecting Error CH341 (Not found)
Connecting Error CH341 (Not found)
IC not responding

I'm running Windows 11 directly on top of the HP Elitedesk G6 800, do I have to desolder ?

what can I do now?

Thank you !!!!!

[RecklessMaker]

flash both

No change
I think the BIOS may be corrupted. Either that or I killed the motherboard somehow. When I try to boot without the EC chip, I no longer get a beep code.