: Finally, the original, unmodified BIOS file is flashed back to the chip to restore full system stability and serial number integrity. Summary Table: Reset Methods Effectiveness Risk Level Requirement CMOS Battery Removal Does not work on T470. Master Password Gen Rarely works for newer supervisor passwords. Hardware Patching Requires CH341A programmer and steady hands. Motherboard Swap Most expensive option. parts list for the hardware programmer required for this process? ThinkPad T470s UEFI Unlock - GitHub
You’ve probably seen forums talking about backdoor master passwords, shorting pins on the EEPROM, or removing the CMOS battery. lenovo t470 bios password reset verified
Lenovo explicitly states there is no official service procedure to reset or remove a forgotten Supervisor Password. : Finally, the original, unmodified BIOS file is