Phoenix doesn't write the BIOS for Toughbooks; Panasonic does. Just because Phoenix lists a newer BIOS for a chipset means nothing; what matters is what the latest PANASONIC BIOS for YOUR model is. Using ANY other BIOS .bin is a near-certain recipe for a Magnesium
Doorstop... mnem Put down the FLASH disk & SLOWLY BACK AWAY FROM THE TOUGHBOOK...