iPhone upgrade iphone 3g 3.1.2 to any better ios.. need help

roshaan

macrumors newbie
Original poster
Oct 12, 2012
5
0
hi. i am a newbie to iphone. i request some guidence

i have an old iphone 3g jailbroken with ios 3.1.2.
i want to upgrade the ios to a newer version. please suggest me an ios for this phone which i can jailbreak. advice from an experienced user please :(
 

roshaan

macrumors newbie
Original poster
Oct 12, 2012
5
0
Trijet would it be too much to ask if you guide me through the process, coz i really m not a computer wiz and dont know much of the terms used here.. ure help will be truely appreciated..

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"If your baseband is already unlockable and you are on a lower firmware version then use PwnageTool to update to 4.2.1 without upgrading your baseband."

do i come in this category?? it is copied from the link u pasted.. and should i follow the instructions given?
i have important notes on my iphone, would it be cleared too if i upgraded it?
 

roshaan

macrumors newbie
Original poster
Oct 12, 2012
5
0
my phone is unlocked already, i mean jailbroken on 3.1.2.. i just want to update to a newer version of ios.. my cydia isnt working on this one, it crashes on loading, so i thot upgrading to a newer version would solve the problem..
 

roshaan

macrumors newbie
Original poster
Oct 12, 2012
5
0
yea my phone is jailbroken plus unlocked, it can be used with any carrier.. i m just wondering, would it hurt to upgrade from ios 3.1.2 to 4.2.1? coz there r quite a few apps etc which only support's ios4 or above.. and how should i save my data before upgrading to the new ios. please help
 

TriJetHero

macrumors 601
Oct 13, 2010
4,954
142
World
is it factory unlocked, IMEI unlocked or software unlocked? it makes a difference.

Txt, contacts, pic etc backup via itunes, jailbreak apps via a 3rd party backup from cydia or manual after rejailbreak.
 

roshaan

macrumors newbie
Original poster
Oct 12, 2012
5
0
i dont know about if its factory unlocked or IMEI or via software.. how can i find out? i bought it from someone a year ago in this condition as it is now, jailbroken and unlocked.. oh yea, after restore and jailbreak, do i need to unlock again?

and contacts, notes and pics etc i can backup on itunes? like i should back up the fone before upgrading to new ios and then sync it with itunes would bring my stuff back, right?
 
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