RCUnlocker

[SMDFlea]

I hope someone can help me remove the BIOS password on my laptop.

I have HP EliteBook 745 G3

Product ID: W7T43EC#UUF
Serial No.: 5CG6216M0Q

Post your request in the 745 G3 topic please, and include your backups - https://www.badcaps.net/forum/troubl...-bios-password

[Rambo1556]

I hope someone can help me remove the BIOS password on my laptop.

I have HP EliteBook 745 G3

Product ID: W7T43EC#UUF
Serial No.: 5CG6216M0Q

[franciscusm]

Hi,

While I finish reading the whole thread, I'll tell my experience in case it helps.

I want to remove admin bios password from a HP Zbook G3 and a HP Zbook G6.

-I bought a cheap eprom reader/writer and a sop8 clip
-downloaded software, installed drivers, etc in windows 11
-tried 1st with an old Dell desktop, located the bios chip, placed the clip, did several reads, verify, compare CRCs. Worked fine

Now let's try the real thing, the G3 bios is suitable for the clip, however the G6's is too shallow and bigger and would need a wson8 pogo pin adapter (or desolder the chip!).

-Open the laptop, remove the battery
-Connect the clip to the bios chip, a bit difficult and not always placed it right
-When I have it right I do several reads, and they don't match. Verification throws an error, but I can see the some content is there, even sometimes readable text
-I notice than a blue led blinks on the laptop when reading
-Removed everything a turned on the laptop: the fans are full speed (oh, no!)
-After 30 seconds or so the laptop starts booting, HP sure start logo and a message of 'BIOS MISSMATCH'
-It seems that the bios got corrupted or I sent current to the wrong pin by misplacing the clip, or who knows
-The sure start self heals and flashes the original BIOS (it's a dual BIOS system)

The computer works fine again and the restored BIOS didn't have a password. So password removed...by corrupting the bios and letting the system heal itself. Live and see.


Now I don't know what to do with the G6, trying the pogo pins probe may cause a disaster or the same may happen and the laptop itself restores a backup without password.

[GeminisK]

There is a possibility to recover from this latest disaster yes, but it will involve more work as you`ll have to fill new DMI info, thats another challenge. When you get the new chip let us know.

I already have the new chip! I can install a new bios to the 2 chips? and that's it? I don't need to break the password, I'll settle for it to turn the laptop back on hehe.

I open a separate post to get a clean bios?

[adamgouadma]

Thank you RethoricalCheese

[SMDFlea]

it is ok.if it says 25b256dyig.

[GeminisK]

There is a possibility to recover from this latest disaster yes, but it will involve more work as you`ll have to fill new DMI info, thats another challenge. When you get the new chip let us know.

this one fits me? even if this one: u9f154 aj2016 is different? the only important thing is that the model is 25b256dyig? please confirm to buy it as soon as possible.

https://es.aliexpress.com/item/10050...Cquery_from%3A

[Stanciu Mihai]

It worked after I installed both versions.
Thanks!

[SMDFlea]

Hello,
I tryed to unlock my HP Zbook 15 G3 and i received this error. I Download the vcruntime140 dll and put on the app folder, but wan't want to start. could you please help me what I need tot do to can start the app?

Get dll files from the official microsoft installers. https://www.badcaps.net/forum/troubl...88#post1655388 ,install the 32 and 64 bit versions

Latest Microsoft Visual C++ Redistributable Version https://learn.microsoft.com/en-us/cp...?view=msvc-170

[azanwaqas771]

Hello,
I tryed to unlock my HP Zbook 15 G3 and i received this error. I Download the vcruntime140 dll and put on the app folder, but wan't want to start. could you please help me what I need tot do to can start the app?

first extract this and after copy this file paste in C:\Windows\SysWOW64 and C:\Windows\System32

[Stanciu Mihai]

Hello,
I tryed to unlock my HP Zbook 15 G3 and i received this error. I Download the vcruntime140 dll and put on the app folder, but wan't want to start. could you please help me what I need tot do to can start the app?

[FaissalDZ]

write it like this on the chip with error, it's ok..try..

Thanks,
I compared the 2 files by HXD editor and I found them the same file.

[peste]

I tried to unlock my HP ProBook 5330m with this tool and I got this error (in the image below)!

HP ProBook 5330m
Serial: CNF1400VLB
Product: LG723EA#ABF

What is the problem please?

write it like this on the chip with error, it's ok..try..

[FaissalDZ]

I tried to unlock my HP ProBook 5330m with this tool and I got this error (in the image below)!

HP ProBook 5330m
Serial: CNF1400VLB
Product: LG723EA#ABF

What is the problem please?

[judynar]

This is a multitool and unlocker for several series of laptops. Works on Windows. No python etc installing needed, all included in package. Everything is tested by myself but since every laptop is not made equally, there might be edge cases. Always VERIFY your file after reading!!!

Unlocking
HP - ProBook, EliteBook, ZBook (including 32MB models)
Chromebooks from all various manufacturers
Apple - everything older than T2
More to come...

Information display (helps to verify file integrity)
HP - ProBook, EliteBook, ZBook (up to 16MB models for now)

Custom logo removal
HP - ProBook, EliteBook, ZBook (up to 16MB models for now)

Usage: Drag and drop .bin file to .exe file.

In case there are problems with unlocking your laptop, write a short description of the issue, upload original file and if possible, _unlocked.bin file aswell. Just crying for help is useless. Keep the topic as clean as possible.

You may ask for feature requests, I'll see what I can do.

i got this problem sir hello im from PH

[SMDFlea]

I have broken the pins of the chip.... now I have to buy another one, I have not been able to get your information.... is there a possibility to have clean bios for both chips? or the pc is useless?

There is a possibility to recover from this latest disaster yes, but it will involve more work as you`ll have to fill new DMI info, thats another challenge. When you get the new chip let us know.

[GeminisK]

You can choose a different 256 chip from the list or add the chip to the NeoProgrammer support list

How to add chip support to NeoProgrammer software for the CH341A Programmer https://www.badcaps.net/forum/troubl...41a-programmer



id="C84019"
page="256"
size="33554432"

I have broken the pins of the chip.... now I have to buy another one, I have not been able to get your information.... is there a possibility to have clean bios for both chips? or the pc is useless?

[SMDFlea]

Sorry for the misunderstanding, is:
gigadevice 25b256dyig u9f154 aj2016
I will get this bios out and upload it as soon as possible!!! thanks!!


do you know with which program I can read it? asprogrammer 2.0, CH341A and NeoProgrammer not.... is impossible :/ how can I read it?

You can choose a different 256 chip from the list or add the chip to the NeoProgrammer support list

How to add chip support to NeoProgrammer software for the CH341A Programmer https://www.badcaps.net/forum/troubl...41a-programmer



id="C84019"
page="256"
size="33554432"

[shaggysound]

I have 3 Elitedesk 800 G6 SFF PC with password locked BIOS.


8 pin Giga Device 25B127DSIG
16 pin 25B256DFIG

Can you confirm the 8 pin 25B127DSIG is the chip of interest to RCUnlocker and that the tool works with this model of computer?
.

My CH341A arrived. After modding it to 3.3v I have successfully removed the bios password for my first system with RCUnlocker and NEO Programmer. I can confirm the 8 Pin 25B127DSIG is the correct chip to flash.

Here are some notes if anyone else is a novice like me:

1: For this model RCUnlocker just displayed "Unlock Success"
2: I used the GD25Q127C profile in NEO Programmer as there isn't one for the chip.
3: In NEO-Programmer I had to select all 5 options for write IC - Off-protect, Erase, Blank Check, Write, Verify. Without this selected it would not write.

[GeminisK]

I have removed the bios attachment, you have already posted it twice in this thread, there is no need to post it again. There IS another chip on the board, and its 32MB, find it,look under the plastic ,look everywhere.look for SOP8 or WSON8 chips .

Sorry for the misunderstanding, is:
gigadevice 25b256dyig u9f154 aj2016
I will get this bios out and upload it as soon as possible!!! thanks!!


do you know with which program I can read it? asprogrammer 2.0, CH341A and NeoProgrammer not.... is impossible :/ how can I read it?