HP ProDesk 400 G6 mini - BIOS Password attempt to remove it

[beBoss]

May I help you ?

Yes, please.
I’ve attached the dump in the previous post. I usually don’t have a proper BIOS dump, but I hope after a million tries today, I’ve finally got it right.
It looks similar to the one you showed me before, so hopefully, it’s not corrupted. The attached file is "2.rar" in the previous post where the screenshot is as well.

[hoaca388]

Yes, please.
I’ve attached the dump in the previous post. I usually don’t have a proper BIOS dump, but I hope after a million tries today, I’ve finally got it right.
It looks similar to the one you showed me before, so hopefully, it’s not corrupted. The attached file is "2.rar" in the previous post where the screenshot is as well.

I mean what do you want to do with it ? Build new bios file or unlock.

[beBoss]

I mean what do you want to do with it ? Build new bios file or unlock.

I'm not sure what I need. There is a password on the BIOS, and I want it removed.
I don't mind whether it involves just removing the password or fully reflashing with a new BIOS. Let's try removing the password first.
What do you suggest?
I'm unsure if I can reflash it, so let's start with removing the password. It doesn't really matter to me right now.

[hoaca388]

I'm not sure what I need. There is a password on the BIOS, and I want it removed.
I don't mind whether it involves just removing the password or fully reflashing with a new BIOS. Let's try removing the password first.
What do you suggest?
I'm unsure if I can reflash it, so let's start with removing the password. It doesn't really matter to me right now.

HP ProDesk 400 G6 Desktop Mini PC
Serial_8CC1270DKS
Sku_47L40EA#ABZ
Build Id_20WWQ6DT601#SABZ#DABZ
Fearture byte_3E3X476J6S6b7B7J7M7Q7T7WaBapaqaubhcAdUdpdqfAfPk8mEnV.Dh

[beBoss]

Thank you so much for your time. I will test the PC now.
What I have done so far:

1. Erased the BIOS from the chip.
2. Opened your unlocked one.
3. Wrote it back with all options in NeoProgrammer 2.2 activated. It says successful.

What is the next step? Should I put the battery back, then power it on, and go to the BIOS for a test, I assume?

A few more questions came up, if you don't mind, of course:

1. Because I cannot use RCUnlocker(only 16MB), as the chip and its size is 32MB, how did you remove the password? I watched a lot of videos and pages on the net about using a hex editor program to find a specific place to change, replace, or delete; some mentioned NvramActiveRegn or other things. So, what is involved here, or how did you do it?
2. I have two more minis: one with the same chip, the other one with an MX something. I assume if I can dump them, you can give me a hand if the method is not public?
3. I have another question: I have an HP Elite Tower 800 G9 Desktop PC that gives me an error when it starts about the security chip -> "HP Endpoint Security Controller" error. Can I remove it the same way, and how? What should I edit? Also, since the tower PC's BIOS is not password-protected, can I download the latest BIOS, remove this error with a hex editor (probably something is wrong with the chip itself, but I don't care, the PC works), and reflash it/update it through Windows as a normal update?

Thanks again.

[beBoss]

I have turned the Pc on and just installed Windows.
In the Bios some info is missing:

HP ProDesk 400 G6 Desktop Mini PC
Serial_8CC1270DKS
Sku_47L40EA#ABZ
Build Id_20WWQ6DT601#SABZ#DABZ
Fearture byte_3E3X476J6S6b7B7J7M7Q7T7WaBapaqaubhcAdUdpdqfAfPk8mEnV.Dh

also there is a red text while booting:

"SYSTEM IS BOOTING IN MANUFACTURING PROGRAM MODE 10"

I quickly read that with the HP tool I can turn the message off, but can I add the other info with this tool?

[SMDFlea]

I have turned the Pc on and just installed Windows.
In the Bios some info is missing:

also there is a red text while booting:

"SYSTEM IS BOOTING IN MANUFACTURING PROGRAM MODE 10"

I quickly read that with the HP tool I can turn the message off, but can I add the other info with this tool?

With some models you can enter the missing info directly in bios settings.

Interactive BIOS simulator HP ProDesk 400 G6 DM - https://h10032.www1.hp.com/ctg/Manual/c06717758.pdf

[beBoss]

With some models you can enter the missing info directly in bios settings.

Interactive BIOS simulator HP ProDesk 400 G6 DM - https://h10032.www1.hp.com/ctg/Manual/c06717758.pdf

I actually entered almost everything into the bios from the info @hoaca388 has provided, but the "system board CT number" not sure which one is it(i have the stickers still) and then the "smbios uuid" cannot find it anywhere? Maybe should be auto generated when i enter everything?
If not maybe it's still into the dump file, which i am not sure what number i am looking for. And to stop the message I changed the MPM from unlocked to locked but still get it? I have two more options for MPM maybe have to change them as well?
I used the HP tool for the BIOS get and set the data.

Will attach the config and the stickers maybe you can tell me which number actually is the CT number because there is more than one CT. Also how to stop the message (the read one that i am in manufacturing mode )



EDIT: Amm after few times editing the confing asked me to confirm the data in the bios(everything I entered) i selected yes and now no problems and autogenerated everything. So not sure if I used the right CT number but don't care anymore. I must say big thanks to everyone and especially @hoaca388 for unlocking my BIOS! I have two more so after 2 weeks probably will post my other BIOS for help But if have time please check my previous post with the questions, they stay still! Thanks again