Remove Software 3.01

bls8195

Member
Bronze
Apr 23, 2008
222
0
16
Texas City, TX
#1
I'm currently running iPhone software update 3.0.1. Is it possible to downgrade? How do I go back to 3.0 software?
 

Adam1389

Member
Silver
Nov 20, 2008
588
1
18
Ilwaco, WA
#2
Shift Restore in iTunes, and select the 3.0 firmware. When its done, you will get error 1015...Open QuickPWN (3.0 beta) and follow the instructions and it will take it out of DFU mode, and you are downgraded.
 
Jun 19, 2007
33,493
4,550
113
Upper Marlboro, MD
#3
Just make sure you don't do anything else in QuickPwn beyond what the first dialog box tells you about taking your iPhone out of DFU mode.
 

shutter13

Evangelist
Gold
Jan 8, 2009
2,208
153
63
#4
Error 1015 is failure to update the baseband...there is no updated baseband from 3.0 to 3.0.1 so it should just go through like any normal restore. It probably won't let you use your back up from 3.0.1.
 

bls8195

Member
Bronze
Apr 23, 2008
222
0
16
Texas City, TX
#5
All I am trying to do is unlocked my phone, can I still do this with the new 3.1 software?
 

shutter13

Evangelist
Gold
Jan 8, 2009
2,208
153
63
#6
All I am trying to do is unlocked my phone, can I still do this with the new 3.1 software?
3.1 (which is in beta right now) or 3.0.1 which is the latest official release?

If your using 3.0.1 then yes, it can be unlocked. Jailbreak with redsn0w and add cydia repo http://repo666.ultrasn0w.com then install ultrasn0w.

If your on 3.1 beta...you cannot downgrade your baseband, and it cannot be unocked at this time.
 

shutter13

Evangelist
Gold
Jan 8, 2009
2,208
153
63
#8
Download the file to a place that is easy to find, like your desktop, click shift + restore, and then navigate to the file.
 

hitrho5

Member
Bronze
Jun 26, 2008
344
1
18
Florida
#10
ultrasn0w works for both 3.0 & 3.0.1. They both have the same baseband, so there is no need to downgrade. Just download redsn0w to your computer & jailbreak your phone (don't install icy, only cydia). Then go to cydia & ad the source that shutter13 gave u. Then turn off 3G. Install ultrasn0w. Reboot the phone. Put the new SIM card in. That's all! Unlocks have become less complicated over time. Downgrading is pretty much useless now.