Unlock Bios Password lenovo t440p bios unlock

no1pars

New Member

reputation_scoree

can help me by removing supervisor password from my lenovo t440p bios please.I have attatched both bios dumps below.
 

Attachments

  • 8mb_backup1.bin
    8 MB · Views: 0
  • 4mb_backup1.bin
    4 MB · Views: 4

Ali Shaikh

ali sheikh
Staff member

Reputation:

Instructions for use"

Remove all battery and CMOS battery

press F1 to enter setup: password 1234
wait 20sec or more.
Enter any ID to hardware Id.
Press 2x space bar when asked.
Turn off the computer.
and restore your original bios .

Enjoy.

If 2x 5beep, it's normal.
I didn't do checksum but it must light up anyway.
Wait minimum 30sec before screen logo light on. Must turn on/off several times by itself.
 

Attachments

  • 4mb_backup1_PATCHED.bin
    4 MB · Views: 9

no1pars

New Member

reputation_scoree

Just tried to flash the 8M chip but it has failed.Any ideas?


### terminal output ###

[andy@ryzen9 stock-supervisor-password-removed]$ sudo flashrom --programmer ch341a_spi -w T440P.bin
flashrom v1.2-702-g89b11595 on Linux 5.17.5-arch1-1 (x86_64)
flashrom is free software, get the source code at flashrom

Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Found Winbond flash chip "W25Q64.V" (8192 kB, SPI) on ch341a_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... FAILED at 0x00000000! Expected=0xff, Found=0x00, failed byte count from 0x00000000-0x00000fff: 0x1000
ERASE FAILED!
 

no1pars

New Member

reputation_scoree

use patched file and notice instructions
ok.

I will reread and compare the 8M chip to orig dump to make sure its still stock.

I will then proceed to patch the 4M chip following ali sheikh's post and bin file.

Thank you both for your time and effort in helping me. Much appreciated
 

no1pars

New Member

reputation_scoree

Instructions for use"

Remove all battery and CMOS battery

press F1 to enter setup: password 1234
wait 20sec or more.
Enter any ID to hardware Id.
Press 2x space bar when asked.
Turn off the computer.
and restore your original bios .

Enjoy.

If 2x 5beep, it's normal.
I didn't do checksum but it must light up anyway.
Wait minimum 30sec before screen logo light on. Must turn on/off several times by itself.
tried this...

screen doesnt even turn on.

put my original bios back on and screen prompts for setup as usual.
 

no1pars

New Member

reputation_scoree

have reflashed the 4M bios again to try it after putting original bios back on to check everything still working.

I am getting 2*5 beeps after pressing F1 and the screen does not come on.
I have also tried an external monitor and keyboard but to no avail.

I did notice while i was in the bios prior to reflashing it this time that compuserve said it was enabled but not active.The supervisor password is definately on but I am not sure if the compuserve is on or not with it not being active.

any ideas ?????
 

Ali Shaikh

ali sheikh
Staff member

Reputation:

Try this file program only 4 mb bios chip
 

Attachments

  • Unlock T440p patched.rar.zip
    2.6 MB · Views: 9

no1pars

New Member

reputation_scoree

Have done it Now.Seems to be working a treat.....It has cleared the supervisor password.
just got to restart it and connect bios battery backup and save the settings....Then just rebuild the whole thing lol.

Thanks Ali ... Your a legend.
 
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