T14s - MEC-1663 - Jtag - Pino
ut - Bios Password Removal
Use MEC-1633#ISP on your RT809h
This is same Jtag pinout and method for T490S/X390
(But your R/W 10K Resistor Location May In a Different Location)
MEC-Chips Store Bios Password In a Secure Un-Editable Area
Following steps clear that secure area to re-initialize itself to default (Blank)
Removing Bios Password Steps:
-Read MEC Chip
-Erase chip
-Unplug power from board for 2 Min
-Write dump back that we just read.-Password Is now Gone
Remember to move R/W Resistor Back To Original Position For Normal Operation.
After clearing bios password you have also wiped the serial and model number to restore them use the ThinkPad Config Information Update Utility.
Serial/Model Info can usually be found on motherboard stickers and bottom cover