Thinkpad T495 locked BIOS

[kicker12]

Hey! I have a T495 with BIOS password... I tried the LPC bus shorting BUT I haven't been able to get it to work (tamper error, asking for password, various errors): I guess I have now tried thousand times...

Hence... Here is its BIOS dump: anyone willing to check/help??? MANY THANKS!

Model: Thinkpad T495
Motherboard: NM-C131
Serial Number: PF-1TG5RR

[Maxpower3]

Hey! I have a T495 with BIOS password... I tried the LPC bus shorting BUT I haven't been able to get it to work (tamper error, asking for password, various errors): I guess I have now tried thousand times...

Hence... Here is its BIOS dump: anyone willing to check/help??? MANY THANKS!

Model: Thinkpad T495
Motherboard: NM-C131
Serial Number: PF-1TG5RR

try

[kicker12]

try

Thanks Maxpower3!
Unfortunately that has not fixed the issue: password still there... :-(((

[Maxpower3]

Thanks Maxpower3!
Unfortunately that has not fixed the issue: password still there... :-(((

Weird
Did you use the patched file?
Did it work?

what password logo

[kicker12]

Weird
Did you use the patched file?
Did it work?

what password logo

Yes, I have tried rhebpatched file... Same behaviour as before... I am starting to guess there are different issues on the motherboard...

[Maxpower3]

Yes, I have tried rhebpatched file... Same behaviour as before... I am starting to guess there are different issues on the motherboard...

I don't understand anything! Did you do that??


[ HOW TO USE THE PATCH ]
STEP 1: Flash and replace current BIOS with the generated patch file
STEP 2: Boot the machine
STEP 3: Press ENTER/F1/etc. to enter BIOS settings
STEP 4: Enter any character when asked for Supervisor Password
STEP 5: Press enter when it shows Hardware ID
STEP 6: Press space bar 2x when asked
STEP 7: Turn off machine
STEP 8: Restore original BIOS
STEP 9: Reset BIOS settings to factory default

[ NOTES ]
When booting the patched BIOS you might have to:
- Hold the anti-tamper switch down the whole time (use tape)
- Remove the hard disk or replace it with a locked one

[kicker12]

I don't understand anything! Did you do that??


[ HOW TO USE THE PATCH ]
STEP 1: Flash and replace current BIOS with the generated patch file
STEP 2: Boot the machine
STEP 3: Press ENTER/F1/etc. to enter BIOS settings
STEP 4: Enter any character when asked for Supervisor Password
STEP 5: Press enter when it shows Hardware ID
STEP 6: Press space bar 2x when asked
STEP 7: Turn off machine
STEP 8: Restore original BIOS
STEP 9: Reset BIOS settings to factory default

[ NOTES ]
When booting the patched BIOS you might have to:
- Hold the anti-tamper switch down the whole time (use tape)
- Remove the hard disk or replace it with a locked one

Yes, patched BIOS flashed... Bottom tamper switch held down... I start the motherboard, Lenovo logo shows up... Then immediately says "bottom tamper error - press esc to continue", than ask for supervisor password.. Note: I am not pressing any key from the keyboard during power on phase, NO SSD connected.

[kicker12]

Ok... Tried again... This time took my time and trued to do everything slowly... I guess I have made the same things/steps as first time but obviously NOT because this time it worked!!! Thanks a lot Maxpower3, I owe you 495 beers!!! 🍺

[Reynaldo Usman]

Pls. rebuild/unlock bios
Model: Thinkpad T495
Motherboard: NM-C131
Serial Number: PF-1wmxa6

history:
unit is a locked bios but now only produces chime sound on power on

[Markus1741]

Pls. rebuild/unlock bios
Model: Thinkpad T495
Motherboard: NM-C131
Serial Number: PF-1wmxa6

history:
unit is a locked bios but now only produces chime sound on power on

Hello try this new files .....

[Reynaldo Usman]

Hello try this new files .....

TYSM It worked!!!

[robante15]

Hi, could you help me unlock this BIOS?
Model: Lenovo ThinkPad T495
Motherboard: FA495 NM-C131
Serial Number: PF-2AEY9K

I tried unlocking with Lenovo Autopatcher, but it only makes a sound when I press the power button; it doesn't display an image at any point.

[danito]

Hi, could you help me unlock this BIOS?
Model: Lenovo ThinkPad T495
Motherboard: FA495 NM-C131
Serial Number: PF-2AEY9K

I tried unlocking with Lenovo Autopatcher, but it only makes a sound when I press the power button; it doesn't display an image at any point.

here

[robante15]

here

Ty it worked