Hi Rrifonas, absolutely I used the lastest firmware named "arcade_update_v2.6_fba_mame_v2.zip"
. The roms work, at least I can get in and exit out of the roms, I just can't get past the diagnostic screens. Roms I am having difficulties with are Defender, Joust and Joust 2. Hum... BTW, I have no CHD files. Many other roms work perfectly.
UPDATE:
I reflashed the Legends Flashback with the latest firmware again "arcade_update_v2.6_fba_mame_v2.zip", to see if I had done something wrong with the firmware. Same problem, can't get past the diagnostic screens in Defender, Joust and Joust 2. I am going to proceed to replace my roms from a different source.
UPDATE 2:
I have replaced the problematic roms from a different source and all is working fine now
Defender, Joust and Joust 2 all working!