Starting with a factory-new ver 1.1.1 iTouch and frustrated with Apple's myopia as to user's needs, I decided to jailbreak it. The biggest obstacle I ran into was unknown error (-48) when I tried updating to 1.1.2 after jailbreaking it and running OktoPrep. And when I got to 1.1.2, the Install app was missing. Here's the sequence from factory fresh: 1. Safari logged onto jailbreakme.com and installed AppSnapp. 2. Ran "Installer" now on iTouch and installed OktoPrep. 3. Ran itunes 7.4.2 and clicked either "Restore" or "Update" (not sure whiche) which installed iTouch 1.1.2 - however the Install app was now gone. 4. Decided to restore to 1.1.1, so downloaded the iPod1,1_1.1.1_3A110a_Restore.ipsw file and tried to "Restore" (holding down opt key in itunes 7.4.2) - but got ".. could not be restored..." error. 5. Per ipodtouchfans jailbreak tip, put iTouch into "restore" mode using sleep & home keys. iTouch then accepted the 3A110a restore file. iTouch now back at 1.1.1. 6. Re-installed AppSnapp & OktoPrep as in #1 & #2 above. 7. Tried to "update" to 1.1.2 w/iTunes 7.4.2. Tried 3x times and always got "...problem downloading to ipod. . . unknown error (-48)" err. Rebooted PowerBook G4 and iTouch. Still same problem. 8. Updated iTunes 7.4.2 to 7.5. Update to 1.1.2 now worked, but Installer app is gone. Has iTunes 7.5 been updated to overcome jailbreak 1.1.2??? Any suggestions? I have carefully studied and searched many of your posts and appreciate this forum greatly!