HP ProDesk 400 G6 Small Form Factor PC bios

[ramalhito]

I also have a HP Prodesk 400 G6 Desktop MiniPC with BIOS problems. When trying to boot gives me 5 long beeps with red led followed by 7 short beeps with white led. I've tried to install one of the bin files I've seen in a previous answer but didn't work. Can you please give me a hand on this? Thanks in advance.

[matyka]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Very nice 💯 worked, thank you.

[hoaca388]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Serial number: 8CC2081HP4
Product no: 47L90EA#ABU

Unlocked
Serial number: 8CC2081HP4
Product no: 47L90EA#ABU

[matyka]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Serial number ?

Serial number: 8CC2081HP4
Product no: 47L90EA#ABU

[hoaca388]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Hello,

I am including the original BIOS from an HP ProDesk 400 G6 mini PC - Could you please unlock this BIOS?

Just did a donation because you are all very helpful.

Serial number ?

[matyka]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Hello,

I am including the original BIOS from an HP ProDesk 400 G6 mini PC - Could you please unlock this BIOS?

Just did a donation because you are all very helpful.

[kimiarayan48]

Re: HP 400 G6 SFF Bios need

Here's your New bios file, try it and let me now the results.

Model Number: HP ProDesk 400 G6 SFF.
Serial Number: JPH943BYJF.

hi
please help me i write this bios file system started but no display.

hp prodesk 400 g6 sff
serial number:1cz93403hs
product no: 6ef22av

[SMDFlea]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Can anyone share 400 g6 (Saxtuba Rev:c ) need clean ME (manufacturing unlock mode)

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

.

[bluethoraipakkam]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Can anyone share 400 g6 (Saxtuba Rev:c ) need clean ME (manufacturing unlock mode)

[nofe4rz]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

HP ProDesk 400 G6 Desktop Mini PC

Could you please clean ME Firmware?

Solved; this post can be deleted

[nofe4rz]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

HP ProDesk 400 G6 Desktop Mini PC

Could you please clean ME Firmware?

[hoaca388]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Can someone can help me, and remove the bios password - hp prodesk 400 g6 mini
Product No.9ag50av
Serial: 8cc138330c
I try with RCUnlocker - says wrong chip.

HP ProDesk 400 G6 Desktop Mini PC
Serial : 8CC138330C
Product : 9AG50AV
Build Id : 20WWQ6ET601#SABU#DABU
Feature byte :3E3X476J6S6b7B7J7M7Q7T7WaBapaqaubhcAdUdpdqfAfPk8mEnV.Dh

[mytagz]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Can someone can help me, and remove the bios password - hp prodesk 400 g6 mini
Product No.9ag50av
Serial: 8cc138330c
I try with RCUnlocker - says wrong chip.

[soup]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

College of mine had a spare Prodesk Mini 400 G6 with the same bios chip.
I read the .bin from it and wrote it to the non functionial one.
Weird thing is, i'm unable to verify my write, it pops up with address verification failed.

[soup]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Why you didn't use the same Programmer that you have already used to read the file from post #35?

I think if you want to use "CH341A v1.7", you will need to choose "CH341 Green" in NeoProgrammer.

After reading I had realized I had the CH341a version with the 5volt issue.
Sadly the iron failed during soldering.

I just finished writing the .bin you had provided but the mobo indicates a invalid firmware with 5 long beeps and 2 short.

[hardware1]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

So I tried it again but on the xx25 pins, got detected and able to read from it.
When I try to write you .bin it give me the follow https://i.imgur.com/ApkEZ9O.png.

Why you didn't use the same Programmer that you have already used to read the file from post #35?

I think if you want to use "CH341A v1.7", you will need to choose "CH341 Green" in NeoProgrammer.

[soup]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

So I tried it again but on the xx25 pins, got detected and able to read from it.
When I try to write you .bin it give me the follow https://i.imgur.com/ApkEZ9O.png.

[soup]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

Here's your New BIOS, try it and let me know.

Serial Number: 8CC1123CN7.

Sorry for the late reply, I was waiting for a new ch341a to arrive.
I ordered the new 1.7 version with the voltage selection. Weirdly enough i'm now unable to read it using the GD25Q256.

It now autodetects the chip as AT24C01_7bits 3.3v 1 Kbits in size.

[hardware1]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

So I just finished extracting the data.

Any chance you can have a look at it?

I have a spare 400 G6 But with slightly different mobo chip.
Any idea It's wise to copy it from the working (bios chip) one to the non-functional 400 g6?

Edit:

Check the other motherboard.

Both chips are the GigaDevice 25B256DF1G.

Only difference:
Non functional has the UE7712 / AH2025 under it and the functional one has UHK914 / AJ2204.

Here's your New BIOS, try it and let me know.

Serial Number: 8CC1123CN7.

[soup]

Re: HP ProDesk 400 G6 Small Form Factor PC bios

From its number it should be (256Mbit/32MB, 3.3v). If your programmer can't detect it, you can choose "GD25Q256" and see if that will help or not.

So I just finished extracting the data.

Any chance you can have a look at it?

I have a spare 400 G6 But with slightly different mobo chip.
Any idea It's wise to copy it from the working (bios chip) one to the non-functional 400 g6?

Edit:

Check the other motherboard.

Both chips are the GigaDevice 25B256DF1G.

Only difference:
Non functional has the UE7712 / AH2025 under it and the functional one has UHK914 / AJ2204.