I'm new to this UEFI bios and my manual only gives this cryptic sequence as a clue to what it's maybe searching for:
0xF1 Recovery condition triggered by user (Forced recovery)
0xF2 Recovery process started
0xF3 Recovery firmware image is found
0xF4 Recovery firmware image is loaded
Perhaps a copy of the bios vers. you saved before flashing?
Have you tried clearing the cmos?
I'd try removing the power cord then the battery wait a few seconds then replace it and power up, maybe the UEFI will reload.
Sorry I can't be more help,