Strav's blog

Here are the steps that I'm taking to upgrade the firmware on my iPhone.  In this case, I'm going from 3.0.1 jailbroken to 3.1.2 jailbroken.  I'm hoping I can do a backup/restore of the settings but I'll need to reinstall apps and cydia applications.  From the cydia perspective, it's not always a good idea to use apt-backup to backup/restore your apps depending on the version but I'm going to try it in this case since it is not a major firmware version update.

- Update iTunes to most current version
- Run apt-backup and back up existing app list
- Screenshot (home-sleep) anything desired and upload pictures to PC
- Perform a sync (backup) to iTunes
- Upload files from 'download' directory on iPhone (music, videos, etc.)
- Check Cydia for manually added repos
- Perform a restore of the non-jailbroken current version of the firmware (3.0.1 -> 3.0.1)
- ** Note: it may be a good idea to take a breather here - there have been some suggestions that the firmware updates can overheat the wifi chip.  It may be that performing back to back updates can make that worse.
- Perform the upgrade to the new firmware (3.1.2)
- Restore the settings
- Jailbreak the new firmware and install Cydia
- Install apt-backup from Cydia and restore apps