| Microsoft offers no detailed information on this update but the Fujitsu website's description is, “FUJ02B1 enables several Fujitsu-proprietary features such as LCD brightness, LCD close/open event, keyboard 'hotkeys', LifeBook Application Panel, and Fujitsu Security Panel, along with other BIOS & Power-level communications.”
Attempts last year at upgrading to win 10 were unsuccessful as were those made by the local Microsoft Store. No explanation was offered by the store. The failed update would go to a blue screen during the automatic reboot after “Upgrading Windows” and “Copying Files” actions were completed with an error message “Recovery Your PC/device needs to be repaired. A required device isn’t connected or can’t be accessed. Error code: 0xc000000f”. Since Fujitsu does not list the P770 on their web site as eligible to be upgraded to either Windows 8 or 10, I was not surprised at the blue screen, although another Lifebook (P1630) that I own did upgrade to Win 10 without problem even though it was also listed by Fujitsu as ineligible for upgrade.