I have a jailbroken 3.2.1 ipad using spirit. I want to upgrade to 4.2.1 and use greenpois0n RC5.
Will I lose my data/applications? what would the correct steps be? I think the steps should be the following, pleaese comment
1. Connect to ITunes and backup/sync
2. Upgrade to 4.2.1 using ITunes
3. Perform greenpois0n jailbreak
Will my appz still be present after the jailbreak?