I did a dell 7420 bios pswrd removal. buy a T48. Soldered 8 wires onto the ic. Mine was a wson-8 package so some room for 0,05 wire with micro soldering tip. I removed the motherboard completly but did not unsolder the ic (winbond 25r256jven). Use w25q256jv in t48 xgecu software.
extract .bin. Patch, write back, voila....