upgrading to 4.0...

[takethefall]

hii, i'm on tmobile. 3.1.2. i wanna go up to 4.0 but i'm really scared about it, lol. i hate being on a lower firmware because i feel like i can't do a lot but if i upgrade, but will i lose my unlock and jailbreak, plus things i have installed from cydia? or does a back up on itunes cover everything?

[Simon]

You can make a custom 4.3.3 firmware with snowbreeze or pwnage tool and restore to that in itunes. That will preserve your baseband so that you can still unlock after. iTunes only backups non jailbreak related stuff so you will have to reinstall anything you installed with cydia after.

[takethefall]

You can make a custom 4.3.3 firmware with snowbreeze or pwnage tool and restore to that in itunes. That will preserve your baseband so that you can still unlock after. iTunes only backups non jailbreak related stuff so you will have to reinstall anything you installed with cydia after.

your post confused me... lol.

how do i make a custom one? and what do you mean so i can still unlock after? i can't if i restore to my backup to 4.0.1 with itunes?

[Simon]

Ok, lets start at the beginning. Do you have a iPhone 3G or 3GS? Are you on windows or Mac?

[takethefall]

Ok, lets start at the beginning. Do you have a iPhone 3G or 3GS? Are you on windows or Mac?

haha. sorry. im new to this this.

i have a 3g and a mac.

[Simon]

4.2.1 is as high as you can go then. You can follow this to get there if you want: iClarified - iPhone - How to Jailbreak and Unlock Your iPhone 3G Using PwnageTool (Mac) [4.2.1]

4.0 and up will run a bit slower on a iPhone 3G though.

[takethefall]

4.2.1 is as high as you can go then. You can follow this to get there if you want: iClarified - iPhone - How to Jailbreak and Unlock Your iPhone 3G Using PwnageTool (Mac) [4.2.1]

4.0 and up will run a bit slower on a iPhone 3G though.

like really slow? not worth it slow?

[Simon]

It's not terrible but definitely noticeable.

[takethefall]

the only thing im getting sick of is not being able to send mms and a few things on cydia that require 4.0+...

[Simon]

Well its up to you. If you do decide make sure to follow that guide otherwise you will lose your unlock.