Restoring Apps after restoring iPod Touch

Question

I recently restored my wife's iPod Touch and when I hooked it back up to her laptop iTunes kept asking me to purchase the January update. I kept telling it no seeing as we had already purchased the update along with the apps back in January. I read on the forum how it should be restored using the computer that the Touch was first synched to. This solved the problem seeing as how I was using the newest laptop to do the restore. The problem is that her original laptop is close to failing which means at some point I won't be able to restore the apps if the need arises again. Is there some way to transfer the January update files and apps over to her new computer so that next time I should be able to do a restore without having to use the original laptop?

Answer 1

The iPod touch January Software Upgrade can only be synced to iPod touch from the primary iTunes library. If the user is manually managing music and video on iPod, this is the computer where they first set up the iPod or first set it up after restoring the iPod. The "iPod touch App Pack 4A93.ipa" file can be copied from the computer where you purchased it to your primary iTunes library computer, and sync the iPod from there.
The file is located here:
Mac OS X:
~/Library/iTunes/Mobile Applications
Windows XP
C:\Documents and Settings\[user name]\Application Data\Apple Computer\iTunes\Mobile Applications\
Windows Vista:
C:\Users\[user name]\AppData\Roaming\\Apple Computer\iTunes\Mobile Applications\
Note: These locations are hidden by default in Windows. You can these locations by choosing "Show hidden files and folder" in the View tab of the Folder Options Control Panel.
Once you have copied the "iPod touch App Pack 4A93.ipa" file to the computer with your home library, make a new folder named Mobile Applications in the correct location, and place the "iPod touch App Pack 4A93.ipa" file there. Open iTunes and sync your iPod touch.