My camera FI9900 V3 stopped working and through serial I made it working again :)with flash file supplied by Foscam (flash_FI9900PV3_1.11.1.10_2.74.1.49.bin)
However I could not upgrade firmware to 1.11.1.13 and did
"nand verify all"
to see if there was a problem with memory. It finished...