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hi, i lost the original bios of my hp probook 440 g9 i still have the EC firmware only. can anyone help me please create a new bios file
here is dmi info from ticket on my laptop
HP ProBook 440 G9
Prod ID 6A293EA#ABF
CT: RPYUP7FA1GY5VW
SN# 5CD23178HV
build ID 22WWRTCZ601#SABF#DABF
476J6S6b7B7J7M7Q7WsaBapaqauawbUbhcAfPguk8mEmwn7nVnwpTpnpqprqjqz.tf
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Hi everyone, could you help me remove the BIOS password and disable Absolute?
HP ProBook 449 g9
Motherboard model: DAX8SFMB8B1 REV B
Serial number: 5CD4076Y4BComment
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Try this and give feedback - https://www.badcaps.net/forum/troubl...y-bios-patcher
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Unlock please 440 g9
sn# 5CD228DGTQ
prod id # 6Q8G4ES#UUWComment
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I noticed there's a lot of unlock request for this model HP ProBook 440/450 15.6/14 inch G9
The patch won't work if the bios version is latest. use this bin flash both it won't work if you only flash the main you should Flash Both!
first boot press f10 apply factory defaults and restart, 2nd boot reset security settings to defaults and exit.
use BCU and put your original DMI
This bios is extracted from hp website so its fast boot this would work in 2 models 14 and 15.6 inch they have the same bios.
To determine your BID use any hex editor and search for the BID. Ex: U72
frequently asked questions:
can i use this to my HP ProBook 440/450 15.6/14 inch G9- yes
This is the both BID U72 and U85 its all you need.
To determine your original DMI use my DMI tool: https://www.badcaps.net/forum/troubl...57-hp-dmi-toolComment
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Bonjour,
j'ai voulu aller plus vite que la musique en faisant une sauvegarde du BIOS SPI et ROMEC. Résultat : j'ai perdu tout le programme de mon ECROM. Serait-il possible d'avoir un fichier ou c'est foutu ?
ci-joint fichier bios avec password
-carte mère ref DA0X8SMB8H1 REV:H
-HP PROBOOK 440 G9
-SN#5CD223D2BK
-PROD ID 6J3K6EC#ABF
Hello,
I wanted to get ahead of the game by backing up the SPI and ROMEC BIOS. As a result, I lost my entire ECROM program. Would it be possible to get a file, or is it ruined?
Attached is the BIOS file with password.
-Motherboard ref. DA0X8SMB8H1 REV:H
-HP PROBOOK 440 G9
-SN#5CD223D2BK
-PROD ID 6J3K6EC#ABF
in English please...Comment
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thank you but
I can't tell if it's U72 or U85Comment
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thank you very mutchComment
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Hello, so I tried reflashing the EC and did a read test via the CH341A and ASPROGEAMMER. Everything is fine. Soldering on the motherboard. The light flashes orange endlessly. The PC won't turn on. I unsoldered it and did a read test. Nothing on the EC model Gigadevice 25B255EY1G.
Do I have to write the FFs in the software or not?
Can I lock the memory after writing?
Thanks for your help.Comment
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Ok, Do I have to write with the FFs in the EC or not?Comment
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absolute persistent - solved..
company locked via internet set up - do i need to clean EC firmware?Comment
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Guys, please help me with Absolute and MDM
I already tried doing it, the MDM was removed because there was no serial, and I already deactivated Absolute and installed Windows 10, but I can’t get the DMI tool to work.. please fix the bin file on your side that I tried.. thank you
SN: 5CD 2315 517
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read post # 107Guys, please help me with Absolute and MDM I already tried doing it, the MDM was removed because there was no serial, and I already deactivated Absolute and installed Windows 10, but I can’t get the DMI tool to work.. please fix the bin file on your side that I tried.. thank you
SN: 5CD 2315 517Comment
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all goods ,,, my problem is fingerprint , i tried to install from hp and google it wont work..
can someone send the right installer or steps on how you fix the fingerprint to work?Comment
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Hp Probook 450 G7 s# SCD0348W35 had a locked BIOS. Bought BIOS and EC chips off Ebay that were supposed to match this machine - the 450 G7. Flashed in the BIOS on chip i bought using a CH341. BIOS unlocked next boot. Some error to contact HP. Entered BIOS and reset to system defaults and rebooted. Machine worked fine but every cold boot the contact HP message popped and everything else worked as fine. Assumed the error was from EC chip not matching BIOS that i just flashed in. So i flashed in the EC that was supposed to match from the EBay chip i bought and instant brick.
Ive got...07-08-2025, 09:24 PM -
Hello everyone,
I’m currently working on a dead MSI GP75 Leopard (MS-17E71) motherboard (i7 CPU, NVIDIA GPU) with a no display/no backlight issue initially. After extensive investigation, I’m at a critical stage involving EC firmware, BIOS/ME region interaction, and possible deep corruption. I'm seeking advanced insight from anyone with experience in EC/BIOS sync issues or PCH-level behavior. Here’s a full breakdown:
🧩 Initial Issue- Board powers on (fans spin, keyboard lights up and can be adjusted, caps lock led lights), but no display or backlight
- External display (HDMI) shows
07-24-2025, 02:17 PM -
First of all thanks to all of our members who have posted previously all methods posted here.
Please leave a comment if you find something new,or have anything else to add.
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Find by serial number,model number or series
If you know the laptop serial or model number go to HP support https://support.hp.com/us-en/drivers/laptops .
Enter the serial number or model number and click submit.On the next screen you will have to enter the OS
Operating system and OS version.If... -
I'm requesting a bios .bin for 2 of my hp Probook 450 G3's. Both of which I had forgotten the bios passwords. I stupidly flashed both of them with firmware "made" by the RCUnlocker software and I guess I shouldn't have. The last thing I did was flash both of them with RCUnlocker-fw thinking it would 100% work and left my programmer etc behind and won't have access to them for another 2 days so I figured I'd create a thread to see if I'd be so lucky that someone might have a working file laying around 😝
Laptop number 1:
Model: HP ProBook 450 G3
Motherboard part number:... -
Hi, my laptop wont boot at all
With original bios no POST, only LED lights
With alternative BIOS from model TP500LN (flashed via programmer) the notebook works again
Some issues
A- with bios from 500LN, it won't update from bios of model 500LA (from 500LN v203 to 500LA v300)
B- If updated from 500LN version 203 to 300, the battery stops being recognized
Things I tried
1- Update / clear ME: Took the non working bios, made a backup, and did this: https://www.badcaps.net/forum/troubl...theory/trouble...
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