I've got an couple of official beta/debug games for the PSP. And I was wondering if it's possible to make the contents of the DVD's playable on a retail psp.
A thread like that have been posted a couple of weeks ago. I think that if you build a valid psp iso, using UMDGEN, from the files that are on the DVD, they could be very playable on a modified retail PSP taht can launch isos from MS. However, i haven't any idea about the validity of this. Could send me in PM a list of the files that are on the dvd ? Maybe they could be in iml and you would just to convert them through UMDGEN or they could be raw, you would have to rebuild the iso structure using UMDGEN, which is more complicated.
You can dump the game files on a memory card and use a iso loader to boot up the game on your PSP,but some beta/debug games will work and some will not.
This is what works with Movie discs, I think games would be similar (I have a couple of DVDs of movie discs, like your game discs). You should have a directory structure like this on the DVD: CONT_L0.IMG MDI.IMG UMD_AUTH.DAT USER_L0.IMG USER_L1.IMG (maybe) The last two files are the .ISO (representing Layer 0 and Layer 1 of the disc, so sometimes L1 is not there if the project is smaller than ~800 MB). If you just have the L0 file, rename it to something.iso and try to DevHook it. If you have both files, just concatenate them into one file, make that your ISO. (DOS command: COPY /B USER_L0.IMG+USER_L1.IMG GAME.ISO) It's pretty much that easy... If it's going to work, that's probably all it will take...
Hmm copying the files and rebuilding the iso should work but if its a true beta it may need more than 32mb RAM because the PSPSDK Devkit PSP has 64mb of RAM.
Thank you all for your reactions, I'm going to order a big memorystick to test all the methods described above. Tommorow I'll check the contents of the discs and its structures, I'll keep you guys posten.
I just took a look at all my discs and almost all games have both of the USER.IMG files. I also put two of them together with the dos commando. Tomorrow I'm getting my 4gig memstick so that will be sufficient Keep you guys posted btw: does anyone here know if the dos combining thing also is possible on osx?
attemp #1: Just tried a preview version of Daxter. It shows up on the PSP it even shows icon and starts sound. However when booting the game I get the following error: 800203231
You wouldnt need a big memory stick you could just use usbhostfs. Also what launcher did you use to launch the game? *Edit* Also what firmware are you on?
Wow I didn't know that, usbhostfs seems to be handy for testing before copying it to the memorystick. However the main reason I want the games running on the normal psp is that I dont have to stick to the psp debug. About the launcher, I putted the iso in the iso folder on the memorystick. I'm using the custom 3.03 OE-C edition.
usbhostfs is extremely useful amen for PSPLink lol anyway on 3.03 OE-C did you have No-UMD turned on? Or was there a UMD in the drive? Also it may be easier to continue this discussion on MSN if you like? Thanks, Will
thanks, I just send an PM. UPDATE: Just tried another game (Tales of Eternia) and unfortuatly that game doesnt work aswell.. got the 80020148 error I've got UMD-autoload on, and no umd in the drive. (and also tried with umd in psp) UPDATE: Pspwill just helped me out with a few things, however at this stage the debug games are still unplayable. A other discovery: I just ripped a UMD myself (MegaDrive Collection) and the iso of that doesnt boot aswell. so I'm doing something wrong or my PSP is being nasty lol UPDATE: I tried booting my own backup of the MegaDrive Collection while having a UMD-disc present. And yes it works! (altough the videos in the game don't play smooth and stutter, I thought the memorystick was faster then a UMD)
The games themselves need to run on a testingtool/development tool firmware, as you need to use iso on those, those need to be patched. I'll PM you for more details.
I'm still not able to boot any debug code's.. so please if someone has a work around for me please let me know.
