HELP!! jailbroken 3gs still using 4.0 and firmware 05.13.04

[beeronbee]

i would like to upgrade this, jailbreak, and unlock. is this possible and how?? please and thank you!!

 

[PsstGreek]

Use Redsn0w, PwnageTool or SnowBreeze. Create a custom firmware for iOS 5.1.1 and upgrade.

 

[dhlizard]

iClarified.com has tutorials

 

[beeronbee]

thanks a bunch guys!

 

[beeronbee]

if i upgrade, will it change my firmware and not allow me to UNLOCK the device? i need to keep it unlocked.

 

[viperGTS]

first backup your SHSH for 4.0.

then use sn0wbreeze or redsn0w to create a custom IPSW to restore to 5.1.1. this will preserve your baseband you need for your unlock in the process.

 

[dhlizard]

if i upgrade, will it change my firmware and not allow me to UNLOCK the device? i need to keep it unlocked.

Answered in first reply, post #2