How hard is it to modify UEFI nvram if the device is off and the UEFI is locked?

This assumes that:

Machine is powered off
No UEFI backdoors
No Reflashing the firmware
No clearing the NVRAM (The point is to modify/read a small amount of NVRAM, instead of resetting it)
Device requires password to POST (Enforced by BIOS… Continue reading How hard is it to modify UEFI nvram if the device is off and the UEFI is locked?