142w ago - Here is PS3 iSO2JB v0.5 which allows you to convert PS3 iSO files to PS JailBreak format, another good app for the PlayStation 3 homebrewed console!
Download:
PS3 iSO2JB v0.5 Converter
Props to
jd200 for the news, and from the author: Hello guys, I'm working on a tool called PS3 ISO2JB.
This tool will allow your backed up PS3 .iso images to be extracted properly and automatically, then played via Backup Manager.
More news coming once tool is finished. Our forum for it check http://teknogods.com
==Usage==
1. Run tool
2. Open your backup .iso
3. Make folder called GAMEZ in your external USB HDD
4. Extract ISO in GAMEZ (do not make any subfolders!)
5. Run Backup Manager on PS3 with USB HDD plugged in
6. Play
==NOTE!==
Required: Jailbreaked PS3 with backups enabled, External USB HDD.
==Support==
This release is beta quality. If something breaks, review any
pertinent comments on teknogods.com, then email me as a last resort.
Include all log files and a detailed description of problem and
how to reproduce it.
==Thanks==
Our community of course!
Make sure you also check out our StarCraft2 and Red Alert 3 Progress!
hey there hilongo 
This would work afaik, however I am unable to test this for obvious reasons...
Are you able to take an decrypted eboot from one of the games you installed on your external hdd, and then put that eboot into the files you got after using this iso2jb program and see if it works. It has to be the same game obviously.
Tested 6 isos, none of which worked.
Dear god, this guy is brilliant. I've got a sizable collection of isos, but no eboots...lets see what we can do to fix this :P
I have Madden 07 (just tested out my AT90USBKEY).. but it's on internal drive, don't know how to get it off. Someone needs to make a homebrew file_explorer.pkg for us to install