Upgrading Jailbroken 3gs on 3.1.3

**Syl66** · 03-03-2011, 07:21 PM

I have a 3gs on 3.1.3 jailbroken with spirit I believe. Can I just use itunes to update to latest firmware without losing my contacts and calendar info or do I need to back them up somehow?

TYVM for any help.

**Simon** · 03-03-2011, 07:47 PM

Are you on official carrier?

**Syl66** · 03-03-2011, 08:03 PM

Yes I am, I am not worried about unlocking the phone, I just want to upgrade to 4.2.1. and then jailbreak it after. Can I just upgrade straight to 4.2.1 with Itunes or do I need to restore the phone first, and if I do how do I save all my contacts and calendar info.

**Simon** · 03-03-2011, 08:07 PM

Just update normally through iTunes. It will back up your phone and restore everything back to the way it was. Then you can jailbreak with greenpoison on 4.2.1.

**Syl66** · 03-03-2011, 08:08 PM

Thank you very much.

**Simon** · 03-03-2011, 08:09 PM

No prob

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