Yeah, I posted about this earlier. Replay files are specific to each region. The prefixes for the replay folders: UCUS = North America, UCES = Europe, UCAS = Asia. Each region only works with its own replay data. I've tried to change some of Genesisfury's UCES replay files with a hex editor to reconcile the parts that seemed to mark it as a UCES file, matching them with my UCUS files of the same car on the same track, then renamed each file accordingly... this trial and error went on for a few hours, but regardless of what I changed, after saving the files and transferring it to the PSP, it always resulted in corrupt data... so no fix yet.
I'm going to do my best to crack that 1'22.5 today... gonna be very tough.