DA0X8BMB6F0 rev F , 25B127DSIG

[leezhihao2020]

Hello everyone,
Sorry for my lack of knowledge but what is the difference
What is the difference between BIOS and Schematic requests?

This is the second time I write in the forum about the same computer with the same problem from a year ago that has not been resolved.
I have a laptop model: ProBook 430 G5 2VP86EA
With motherboard model: DA0X8BMB6F0 rev F
BIOS chip model: Gigadevice HH1742 25B127DSIG AP15471 3.3v

I bought a bios chip for this motherboard model from Ebay, but it is not the same chip model (GigaDevice 25Q128CSIG which is only 3v and I don't know if it safe to replace it with my locked chip that work on 3.3v) and I have no soldering knowledge.

The local HP service provider in Israel is only willing to replace the motherboard that costs like a new computer and I don't want pay so much.

I search a lot on this topic in the recent months and I understand that HP in the past was send HPBR software to customers to unlock the BIOS Password but they refuse to do that. I guess keeping a green environment doesn't interest them.
Why replace a working motherboard if it is technically possible to release the password lock with the help of software? I even asked to pay them for this software but they refuse.

Now I have no solution or support except to consult you smart people on this site. I want to ask you:
If I find a USB Programmer model that has software that can read and write to the BIOS chip model in my computer,
Is it possible to read and write on the bios chip using a clip cable while the chip is still soldered to the motherboard without having to solder the chip from the motherboard?

I don't want to break the site rules
I am not asking you to recommend me a particular model of USB PROGRAMMER
I searched on different websites and saw a model Laqiya T48 (TL866-3G) programmer
I don't even know if it supports my computer's bios chip model.
I sent a message to the store but they don't answer me. I don't want to just buy something that I can't use because I have no knowledge or experience in soldering.

If you could help me with any information I would really appreciate it. This problem has been going on for over a year on my computer.
Thank you very much everyone.

[hoaca388]

Re: DA0X8BMB6F0 rev F , 25B127DSIG

Forget about replacing the bios chip with a new one in the hope of unlocking your bios, it's useless.
You need a programmer to read the content your original bios chip and use the RC unlocker tool on this forum to unlock it.

You can use clamps if your soldering skills are not good.
As for the programmer, you should find out if it supports the Gigadevice 25B127Dsig.. before you buy it.

[leezhihao2020]

Re: DA0X8BMB6F0 rev F , 25B127DSIG

Hello hoaca388,
How can I know which model programmer can work?
I want to buy some programmer that can work and support my BIOS chip model but the stores don't answer me and I have no choice but to ask smart people here.
And what is the RC unlocker tool on this site that you mentioned? Where do I download it and is it suitable for every programmer?

[hoaca388]

Re: DA0X8BMB6F0 rev F , 25B127DSIG

Hello hoaca388,
How can I know which model programmer can work?
I want to buy some programmer that can work and support my BIOS chip model but the stores don't answer me and I have no choice but to ask smart people here.
And what is the RC unlocker tool on this site that you mentioned? Where do I download it and is it suitable for every programmer?

https://www.sflytech.com/English/Pro...986173950.html
https://www.aliexpress.com/item/4000...d=CJgpMNQAjFpV

[leezhihao2020]

Re: DA0X8BMB6F0 rev F , 25B127DSIG

After I buy a programmer that supports the BIOS chip model of my laptop
What am I supposed to do? Can someone here send me some file to write an original version of BIOS on it without a password lock?

[hoaca388]

Re: DA0X8BMB6F0 rev F , 25B127DSIG

After I buy a programmer that supports the BIOS chip model of my laptop
What am I supposed to do? Can someone here send me some file to write an original version of BIOS on it without a password lock?

Use that programmer to read your chip, save content readed become a *.bin file, use RCUnlocker to unlock that *.bin file ( RC Unlocker will create a new one for you), use your programmer to write the file created by RC Unlocker into your bios chip. Complete.

Red : No,Don't be lazy once you have a programmer.

[leezhihao2020]

Re: DA0X8BMB6F0 rev F , 25B127DSIG

The RCUnlocker tool, is that a software? is that support and unlock any bin file that created by any programmer? where can I download the RCUnlocker tool? I didn't find that.

[hoaca388]

Re: DA0X8BMB6F0 rev F , 25B127DSIG

https://www.badcaps.net/forum/showth...ht=rc+unlocker

[leezhihao2020]

Re: DA0X8BMB6F0 rev F , 25B127DSIG

oh that is nice. thanks. after i save my bios bin file with any programmer, should I drag the bin file on this tool window? how can i use this tool?

[leezhihao2020]

Re: DA0X8BMB6F0 rev F , 25B127DSIG

Hello everyone, I have a difficult problem and need technical help:
Yesterday I ordered a sample programmer from Amazon: Xgecu T48 TL866-3G
This morning I received an email from the store: SETCTOP
They wrote that the programmer does not support the model of the bios chip of my laptop: Gigadevice HH1742 25B127DSIG AP15471 3.3v SOP8 208mil
And they wrote to me to cancel the order.

Before I placed the order, I installed the programmer's software that I downloaded from a website: Xgecu
I saw that a model with a shorter name appears there: 25B127D
I explained it to the store but once again, the store wrote to me that the programmer is not suitable. So I canceled the order.

Now I'm looking for a programmer who has software that supports the exact model of the bios chip: 25B127DSIG
Both software and hardware support voltage.

On the EBAY website, various stores do not know what to answer me and they give me the same copy-paste answer.

From what I've read about the CH341A programmer, it doesn't support the power supply nor the software for my laptop bios chip model.

Does anyone have a successful experience with this chip: 25B127DSIG ?

Also I have to use a Test Clip Cable with SOP16/8-DIP8 adapter board while the chip is still soldered to the motherboard without having to solder the chip from the motherboard? because I have no knowledge or experience in soldering.