Lenovo T490s bios password request.

[vikivng]

Hi guys pls help me with this file.
Can someone clean for me pls.?

[vikivng]

file looks quite small but i have read and verified 3 times .

[SMDFlea]

Originally Posted by vikivng

file looks quite small but i have read and verified 3 times .

It is too small.Are you using a CH341A and a clip

[vikivng]

Hi,im using CH341a chip soldered directly onto programmer

[SMDFlea]

Originally Posted by vikivng

Hi,im using CH341a chip soldered directly onto programmer

Use NeoProgrammer,Colibri or ASProgrammer software ,you`ll find them all on the forum if you search.

[vikivng]

Yep neoprogrammer also gives the identical reading..

[vikivng]

Does anyone have any ideas on what the issue could be.?

[SMDFlea]

Originally Posted by vikivng

Does anyone have any ideas on what the issue could be.?

yes,after a closer look at it its the thunderbolt firmware, size 1MB. Look for another chip

[Repdata]

Please

[vikivng]

Originally Posted by SMDFlea

yes,after a closer look at it its the thunderbolt firmware, size 1MB. Look for another chip

Oh,,you mean this is not the bios chip.??

[SMDFlea]

Originally Posted by vikivng

Oh,,you mean this is not the bios chip.??

no it isn`t

[vikivng]

ok thnx.

[SMDFlea]

Originally Posted by vikivng

ok thnx.

Find it ,make a few backups and compare them make sure theyre the same. Post one of the backups here so we can check if its good or not. Don`t try flashing another bios until then.
At post #1 you said you wanted your bios cleaning, did you mean the ME firmware or a password

[vikivng]

Originally Posted by SMDFlea

Find it ,make a few backups and compare them make sure theyre the same. Post one of the backups here so we can check if its good or not. Don`t try flashing another bios until then.
At post #1 you said you wanted your bios cleaning, did you mean the ME firmware or a password

I meant password.

[vikivng]

Hi,
could someone show me where this bios chip is located on this board.?
ThinkPad FT491/ FX390 NM-B891 Rev2.0

[vikivng]

Originally Posted by vikivng

Hi,
could someone show me where this bios chip is located on this board.?
ThinkPad FT491/ FX390 NM-B891 Rev2.0

Is this the right chip?

[SMDFlea]

Originally Posted by vikivng

Is this the right chip?

No,thats a mosfet. See here https://www.allservice.ro/forum/images/T490s_bios.jpg ,post the part number on top of the chip thats arrowed

[vikivng]

WINBOND 25Q256JVEQ
Must be this one!!

[SMDFlea]

Originally Posted by vikivng

WINBOND 25Q256JVEQ
Must be this one!!

Thats the one.Its a WSON8 you`ll need an adapter,if you havn`t already got one,or you can solder wires to the pins.

[vikivng]

Originally Posted by SMDFlea

Thats the one.Its a WSON8 you`ll need an adapter,if you havn`t already got one,or you can solder wires to the pins.

yes I saw this will be tricky to remove.