Resetting a Jailbroken iPhone

[Jay3GSM]

I'm gonna sell my iPhone, so I want to delete all my personal data, but retain the unlock. Any suggestions on the best way to do this?

 

[dhlizard]

I'm gonna sell my iPhone, so I want to delete all my personal data, but retain the unlock. Any suggestions on the best way to do this?

Best way, restore to Official Apple IPSW, then re-JB and unlock.

Difficult on 3GS, easy on 3G.

 

[darngooddesign]

I'm gonna sell my iPhone, so I want to delete all my personal data, but retain the unlock. Any suggestions on the best way to do this?

What's awesome is knowing which iPhone, which OS, and which baseband you have.