Update jailbroken 4.2.1 to 4.3.1

[tomz24]

Hi,

Each time I have jailbroken my iDevices, I never updated them ...

So, my question ...

Currently I have Iphone 4 (4.2.1) jailbroken with GreenPois0n.

I would like to have my iPhone updated to 4.3.1 and jailbreak again ... What are the steps to be able to update to 4.3.1 + jailbreak WITHOUT having to reinstall all cydia apps (sbsettings, ultrasn0w, lockinfo,...) and cracked app store apps ?

Thanks !

[goofball2k]

Assuming you have an unlockable baseband, download the 4.3.1 ipsw, run it through sn0wbreeze to create the custom ipsw, and use itunes to load that custom ipsw on your iphone.

use pkgbackup before doing the above to back up your cydia apps.
PKGBACKUP - User Guide