Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.
I unlocked the bios password with RCUnlocker of the 840 G5, but since then every time I turn it on I get an HP Endpoint Security Controller problem. I am attaching the backup copy of the 32MB chip, please help me with the solution!
Last edited by Echoo; 05-30-2024, 12:49 AM.
Reason: I tried to write about this in the appropriate topic, but there was no reply. Here it is disassembled on my desk...
I unlocked the bios password with RCUnlocker of the 840 G5, but since then every time I turn it on I get an HP Endpoint Security Controller problem. I am attaching the backup copy of the 32MB chip, please help me with the solution!
HP EliteBook 840 G5
PN: 2FA66AV
SN: 5CG8253GZD
flash this main and the original locked EC.
first boot press f10 apply factory defaults and restart, 2nd boot reset security settings to defaults and exit.
after following my instruction to get rid of Manufacturing mode. use BCU. or flash the original main.
flash this main and the original locked EC.
first boot press f10 apply factory defaults and restart, 2nd boot reset security settings to defaults and exit.
after following my instruction to get rid of Manufacturing mode. use BCU. or flash the original main.
Thank you for your help. I followed your instructions but encountered an issue. I received a message indicating that the BIOS blocks don't match and that I need to update the BIOS. However, when I reached the battery screen (the battery capacity error message due to the battery not being connected), the system froze.
Upon restarting the laptop, I observed six orange flashes and then nothing happened. I removed the chip again and compared the files, noting that some changes had been made.
Thank you for your help. I followed your instructions but encountered an issue. I received a message indicating that the BIOS blocks don't match and that I need to update the BIOS. However, when I reached the battery screen (the battery capacity error message due to the battery not being connected), the system froze.
Upon restarting the laptop, I observed six orange flashes and then nothing happened. I removed the chip again and compared the files, noting that some changes had been made.
Do you have any suggestions on how to proceed?
flash this main and the original locked EC.
first boot press f10 apply factory defaults and restart, 2nd boot reset security settings to defaults and exit.
after following my instruction to get rid of Manufacturing mode. use BCU.
Serial Number: 5CG85033FH
Product #/SKU: 3UP81ET#ABU
CT Number: PGWNQ00WBBO1RJ
Description: HP EliteBook 840 G5
BuildID: 17WWCSBT602#SABU#DABU
Feature Byte: 3X476J6S6b7B7H7M7Q7W7m7saBaEapaqauawbUbhcAdUdpdqfAgdhKhkjh.GE
MAC Address : E4:E7:49:9E:89:F2
Hi request to unlock bios HP ELITEBOOK 840 G5
i tried to unlock with hp unlocker but password still there.
productid 6AU11UP#ABA
SN 5CG9292NXS
i have read most of posts about unlocking the bios but i am so confused could you please tell me all steps just for my case
i am attaching dump file
Hi request to unlock bios HP ELITEBOOK 840 G5
i tried to unlock with hp unlocker but password still there.
productid 6AU11UP#ABA
SN 5CG9292NXS
i have read most of posts about unlocking the bios but i am so confused could you please tell me all steps just for my case
i am attaching dump file
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I did reprogram the main chip with bin file you provided but i also de assembled and reprogrammed the chip which is located at back of board. Saved original bin then unlocked with hp unlocker. But laptop doesn't power up now no sign of light even the charging plug on. No light on keyboard.
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