help with a 3gs unlocked jaibreak upgrade

[hyperkinesis]

I have a 3gs with 3.1.2 unlocked and jailbreak with blackrain
I want to upgrade to 4.0.1 or 4.0.0 but I dont want to lose all the apps I have on it , downloader from **********

some help please,, theres is a tutorial or someone can help me please

[manishkatiyar]

You can can directly move to 4.1 using Sn0wbreeze 2.0.2
Make sure that you follow each step carefully otherwise you might end up bricking up your phone

http://*************/topic/83762-sn0...d-touch-3g-2g/

[hyperkinesis]

thanks I download the firm from here iPhone 3GS 4.0.1
but I open the file with snowbreeze but theres no IPSW on it

what I have to do

[manishkatiyar]

You will have to tell the exact details:
- Current FW
- Old / new bootroom
- Need unlock or not

You will have to download the official 3gs 4.1 IPSW and then browse for it thru sn0wbreeze

[blkcadi]

Use Firefox browser to download firmware, works so mush better.
If the ipsw you downloaded has an extension of .zip, right click and rename it to .ipsw