I just bought a PSP that already had 3.40 OE installed. I reformatted my memory stick (because I had been using it on a 2.71 with Dev Hook which bricked on me). When I try to transfer an ISO thru the USB it starts to transfer and after 4 or 5 seconds the thing that zings back and forth on the PSP indicating it is transferring stops. A couple of seconds later I get that error message: "cannot find file xxxxx: cannot find the specified file, make sure you specify the correct path and file name" from my computer. I know it hasn't had time to transfer the ISO since it's about 500 Meg. The file does show up on my MEM stick but when I try to load it it won't play. So I know then that it didn't get all the way transferred. I've tried several other ISO's with the same result. They all stop transferring after a few seconds. I've looked on here to see if anyone else had the same problem but no help was found. I'm sure it's something easy that I'm overlooking.