Modern Fujitsu devices have "BIOS Recovery" partitions. If a flash fails due to a power cut, many models (2019 and later) can recover automatically by holding Ctrl + Home on boot. Furthermore, the Windows tool verifies the checksum before writing.
Frequently Asked Questions (FAQ) Q: Does the Fujitsu BIOS Update Tool work on Windows 11? A: Yes. Fujitsu devices certified for Windows 11 (TPM 2.0 required) fully support the tool. fujitsu bios update tool
A: Possibly, but Fujitsu Siemens Computers (FSC) ceased operations in 2009. Legacy tools for those devices are no longer digitally signed for modern Windows. Use the DOS method for retro hardware. Modern Fujitsu devices have "BIOS Recovery" partitions