Help HP Elitedesk 800 G6 Mini PC LOCKED BIOS

[peste]

Re: Help HP Elitedesk 800 G6 Mini PC LOCKED BIOS

hello, can someone help me and remove the bios password?

try..

[SMDFlea]

Re: Help HP Elitedesk 800 G6 Mini PC LOCKED BIOS

hello, can someone help me and remove the bios password?

You must post the serial number,as per the rules.

RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*
https://www.badcaps.net/forum/showthread.php?t=103569

.

[RecklessMaker]

Recently picked up an HP EliteDesk 800 G6 (Product 3E2E2US, Serial MXL1093CPH, Motherboard DA0F93MB6F0 Rev F) at Goodwill but the BIOS was locked. I desoldered and dumped both the BIOS chip (GD25B256D) and the EC chip (MX25L12873F) on my TL866II+. I ran the EC image through RCunlocker (it said it succeeded) and reflashed the EC chip. I also cleaned the ME Region of the BIOS using the guide from Level1Techs.

Unfortunately the machine no longer POSTs. The fan comes on at full speed as soon as I plug the machine in, then eventually ramps down, but that's it. No beep or flash codes at all. If I remove the EC chip, it does give the correct beep & flash codes, so it seems like the motherboard is ok. I've tried every combination of modified and original binaries for both chips; no change. I tried recovering the BIOS via a USB flash drive, but the machine doesn't even try to read the drive. I was unable to extract BIOS or EC binaries from the update executable (does not have the 'Copy' option). I found a couple of other threads for the Elitedesk 800 G6, but I don't know whether the EC or BIOS files in those can be used with my machine.

What did I do wrong? What do I do now?

[SMDFlea]

Thread merged.

[rex98]

Recently picked up an HP EliteDesk 800 G6 (Product 3E2E2US, Serial MXL1093CPH, Motherboard DA0F93MB6F0 Rev F) at Goodwill but the BIOS was locked. I desoldered and dumped both the BIOS chip (GD25B256D) and the EC chip (MX25L12873F) on my TL866II+. I ran the EC image through RCunlocker (it said it succeeded) and reflashed the EC chip. I also cleaned the ME Region of the BIOS using the guide from Level1Techs.

Unfortunately the machine no longer POSTs. The fan comes on at full speed as soon as I plug the machine in, then eventually ramps down, but that's it. No beep or flash codes at all. If I remove the EC chip, it does give the correct beep & flash codes, so it seems like the motherboard is ok. I've tried every combination of modified and original binaries for both chips; no change. I tried recovering the BIOS via a USB flash drive, but the machine doesn't even try to read the drive. I was unable to extract BIOS or EC binaries from the update executable (does not have the 'Copy' option). I found a couple of other threads for the Elitedesk 800 G6, but I don't know whether the EC or BIOS files in those can be used with my machine.

What did I do wrong? What do I do now?

flash both

[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.

[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 !!!!!

[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]

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]

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]

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 !!!

[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]

I tried to enable and disable it, no success

[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]

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

[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!

[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]

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,

[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!

[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]

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