bios for hp PROBOOK 455 G9

[h4rd1ns0mn14]

I need clean DMI
445 G9

[peste]

I need clean DMI
445 G9

post S/N, full name and model, motherboard model, product number,etc.

[h4rd1ns0mn14]

post S/N, full name and model, motherboard model, product number,etc.

SN - 5CD301D7PH
ProdID 6H7Y5AV
HP Probook 445 G9

[hoaca388]

SN - 5CD301D7PH
ProdID 6H7Y5AV
HP Probook 445 G9

HP ProBook 445 14 inch G9 Notebook PC IDS Base Model

[h4rd1ns0mn14]

HP ProBook 445 14 inch G9 Notebook PC IDS Base Model

DMI info still pulled up, is there a solution to fix this? i need clean DMI))

[toddyncomics]

Hello i have HP Probook 445 G9 BRJ2412ZDJ BIOS locked

[moshu]

Hi everybody,

I have to remove bios password on some ProBook 455.
Can anyone help me to remove it from attached bin?

Serial Number: 5CD2315F08
CT Number: ppqnf048jgy00w
Product name: HP ProBook 455 15.6 inch G9

[rex98]

I noticed there's a lot of unlock request for this model HP ProBook 455 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.
frequently asked questions:
can i use this to my HP ProBook 455 G9- yes

This is the both BID U78 and U88 its all you need.
This bios main is from official website then added VSSTORE and patched so its fast-boot just like intel clearme.
to determine your BID use hex editor and search U88 or U78 in your main bios bin, you know the rest.

[moshu]

I noticed there's a lot of unlock request for this model HP ProBook 455 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.
frequently asked questions:
can i use this to my HP ProBook 455 G9- yes

This is the both BID U78 and U88 its all you need.
This bios main is from official website then added VSSTORE and patched so its fast-boot just like intel clearme.
to determine your BID use hex editor and search U88 or U78 in your main bios bin, you know the rest.

Thanks rex98. I confirm it is working fine.
Took me almost half a day to to write the chips because is not easy to me to unsolder them from MB and put them back without damaging plastic around them.
What would be the bios version that will require patching only main chip?
also to put original DMI I was using BCU but I was not sure if I could use the original one to write the settings or only some settings? What do you recommend?

[rex98]

Thanks rex98. I confirm it is working fine.
Took me almost half a day to to write the chips because is not easy to me to unsolder them from MB and put them back without damaging plastic around them.
What would be the bios version that will require patching only main chip?
also to put original DMI I was using BCU but I was not sure if I could use the original one to write the settings or only some settings? What do you recommend?

your's is U78

and this is your DMI

Serial Number: 5CD2315F08
Product #/SKU: 4S0R3AV
CT Number: PPQNF048JGY00W
Description: HP ProBook 455 15.6 inch G9
BuildID: 22WWTPBT602#SABU#DABU
Feature Byte: 476J6S6b7B7J7M7Q7W7saBapaqauawbhcAdpdqfPguk8mEn7nWpFpqqjqz.qf
MAC Address : 5C:60:BA:B8:62:3C

[moshu]

your's is U78

and this is your DMI

Serial Number: 5CD2315F08
Product #/SKU: 4S0R3AV
CT Number: PPQNF048JGY00W
Description: HP ProBook 455 15.6 inch G9
BuildID: 22WWTPBT602#SABU#DABU
Feature Byte: 476J6S6b7B7J7M7Q7W7saBapaqauawbhcAdpdqfPguk8mEn7nWpFpqqjqz.qf
MAC Address : 5C:60:BA:B8:62:3C

thanks, I have those information as well, except MAC address.

If the bios version is not new (08/11/2022), can I only patch the main chip?

[rex98]

thanks, I have those information as well, except MAC address.

If the bios version is not new (08/11/2022), can I only patch the main chip?

just follow my instructions flash both. if you want latest bios just update

[volinakis]

Thanks rex98. I confirm it is working fine.
Took me almost half a day to to write the chips because is not easy to me to unsolder them from MB and put them back without damaging plastic around them.
What would be the bios version that will require patching only main chip?
also to put original DMI I was using BCU but I was not sure if I could use the original one to write the settings or only some settings? What do you recommend?

use Kapton tape for plastic parts around bios chipsets. Since March 2024 HP changed security and models with bios newer than March 2024 can't be patched to enter mpm. Rex98 files are very good to unlock HPs, update bios in steps - use a version from 2023, then other from 2024 and so on. Personally I use files where they updated ME versions, I had a update failure when I tried to update directly to last version. MAC Adress is on a label on motherboard, as well as CT.