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Thread: 3g upgrade 3.1.3 to 4.x?is a discussion within the
3G[S] Downgradingforums, a part of the
Jailbreak / Downgrading / Upgradingsection;
]I JB my 3g awhile back using redsn0w. My baseband is 5.12.01 and i used ultrasn0w to unlock it. But now i want to upgrade to a 4.x version. Reason...
01-29-2012, 06:11 PM #13g upgrade 3.1.3 to 4.x?
]I JB my 3g awhile back using redsn0w. My baseband is 5.12.01 and i used ultrasn0w to unlock it.
But now i want to upgrade to a 4.x version. Reason for it is i cant send mms. On my other 3g its also JB but on 4.2.1 but on messages theres a little camera option to add a pic to the message. But not on my 3g with 3.1.3.
So i have read some other threads and so far i have sn0wbrezze installed and tiny umbrella on my pc. On the phone i go to cydia on on top it shows SHSH:ios 4.1, 4.2.1
Now i ran sn0wbrezze and downloaded firmware 4.1 next on the screen it asked to simple mode, expert mode and BB preserve mode. I havnt gone any further, Am i on the right track or is there a step i missed.
01-31-2012, 02:40 PM #2
Personally I would stay on 3.1.3....4 just slows the phone down...
But if u insist on upgrading I would go to 4.2.1....u could try 4.1 first...
U should be able to send mms...could u before?..
Hmm..sorry I didn't read ur post well enough...it must be an unlock thing?...why u can't send mms on 3.1.3 phone... My wife has 3G on 3.1.3 and can send pics just fine..
We r on AT&T...no unlock
U could try 3.1.3 restore and re-JB and unlock...I don't unlock so maybe someone else can help with more knowledg
Last edited by xboxbml; 01-31-2012 at 02:48 PM.
02-01-2012, 05:45 PM #3
yeah 4.2.1 on my other 3g is slow compared to the 3g on 3.1.3. And im not with AT&T. im using simple mobile maybe i could try a diff carrier i guess.
Ok so to go to a Jb 4.x firmware from a jb 3.1.3 is the same process as when i first jb the phone?
Last edited by evo9; 02-01-2012 at 11:26 PM.
02-13-2012, 12:23 AM #4
02-13-2012, 06:21 PM #5
If u don't need unlock, plug into pc fire up iTunes, and click update...personally, I wouldn't go higher than 3.1.3 on 3g...
02-13-2012, 07:35 PM #6
But I never saved it on 4.2 ?? So does this mean I can go back down to 4.2 and downgrade my baseband
02-15-2012, 03:56 AM #7
Never saved what?...blobs?...4.2.1 is highest iOS for 3G...apple will allow 4.2.1 forever...don't need blobs...especially for 3G...but preserve basebands.! Once you've updated baseband, you cannot downgrade the baseband! That's permanent. If u have unlockable baseband u MUST preserve it!
And if u truly have the 3G, u can put in DFU mode and downgrade from 4.2.1 to 3.1.x I believe...but baseband will not downgrade..so preserve that baseband if u unlock!
Last edited by xboxbml; 02-15-2012 at 03:58 AM.