Last night, testing with the "v2" that doctorxyz posted, I tried booting some PAL games in standard NTSC 480i, and the fields appeared to be displaying at double-height (with the bottom half of the image not displayed), and this persisted into the OSD when performing an IGR. Game was Destruction Derby Arenas (SCES-50781).
Chip-free/MC-free homebrew <3
FMCB 1.93 on MC for emergencies, NA
250GB HDD/FHDB 1.93/OPL 0.9.2 (GSM and non-GSM)/PS2 games, NO HDDOSD
80GB HDD/FHDB 1.93/POPStarter rev12/OPL644/GSM0.37/PS1 games, NO HDDOSD
SCPH-75001 (sitting idle, slims suck):
FMCB 1.92 on MC