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Update: Added steps about Installer.app installation

I just finished upgrading to the current iPhone firmware version 1.1.1. Previously, I had used the iUnlock howto which was the first description of how to unlock an iPhone to be able to use any SIM card (and not only AT&T). One side effect of that hack was, that it damaged the baseband of the phone which resulted in a not working iPhone after upgrading to the firmware. Since yesterday, a method for virginizing the iPhone is available, so that I could finally upgrade, re-activate and re-unlock it.

Step-By-Step:

1. Virginize iPhone (only needed, if your iPhone was previously unlocked by iUnlock or anySIM)
2. Prepare iPhone for 1.1.1 upgrade (button in iNdependence)
3. Upgrade firmware via iTunes
4. Activate and Jailbreak via iNdependence
5. Copy & run anySIM on the iPhone to do the re-unlock
6. Delete folder /private/var/root/Library/Installer via ssh/sftp
7. Download and extract AppTapp
8. Get Installer.app from the contents of AppTapp Installer.app file (Ctrl-Right-Click on Mac -> Show Package Contents)
9. Upload Installer.app to /Applications on your iPhone & restart it
10. Run Installer and update to the newest beta release of version 3 for iPhone 1.1.1 support

=> was not very complicated

iPhone

And the new iTunes store on the iPhone is really great and works with the German content.

Next is to get Installer.app running again…