Well, as we all know, PSAR Dumper dumps the flash of a firmware in regular or decrypted format. Would it be plausible to consider that dumping, say, 4.01, and 5.00, that we could find the biggest change in the POPS that adds the interlaced video-out?
Perhaps if anything create an alternate version of FS Mode 3 from FuSa b48 with specifications altered by what we might find in decrypted files?
Just an idea for following sony's footsteps in relation to interlace output, but in this way adding it as a plugin so it is not limited by POPS version