hi my name is harryoke and i am a member of ps3hax ...we have recently been able to run psp games on cfw ps3 without the use of the cobra dongle .... we would be grateful for any help your talented dev's could give us...please feel free to join us on ps3hax and discuss this matter .... here is a link http://www.ps3hax.net/showthread.php?t=54220 hope to see you their.
Actually, it's possible now, but it requires one important thing - signed executable should be placed into image (disc0:/PSP_GAME/SYSDIR/EBOOT.BIN) and converted into eboot.pbp using fake_np. ErikPshat from pspx somehow managed to sign it properly, (discussion thread there) and as you can see below it's working:
I also tried it myself using seboot and PrxEncrypter, but encountered following issue:
1. Using seboot or PrxEncrypter sign executable and replace eboot.bin in any PSP image.
2. Run this image on PSP with CFW. <-first kind of "wall" which you could hit - error 0x80020148 or PSP just freezed. This means, that executable is not properly signed. If it works, going to last checkpoint.
3. Using fake_np make eboot.pbp from image and run it on OFW. <-there also could be error 0x80020148 appear. Otherwise it's ready for testing on PS3.