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Thread: 3GS 4.1 iPad Baseband No Service
11-26-2011, 10:18 PM #13GS 4.1 iPad Baseband No Service
3GS Old Bootrom
Phone was jailbroken (untethered) on iOS 5 and 6.15.00. Installed ultrasn0w 1.2.4 via Cydia and popped in a T-Mobile SIM which comes up with No Service.
Downgraded to stock 4.1. Kicked out of recovery with TinyUmbrella. Activated on iTunes with offficial AT&T SIM and then used redsn0w 0.9.9b 7 to jailbreak and reflash iPad baseband. Installed ultrasn0w 1.2.4 via Cydia and still the same results. No service
I'm coming to the conclusion that this could possibly have something to do with ultrasn0w?
I have reflashed the iPad baseband 3-4 times now and have tried using custom 4.1 ipsw. I've even tried using custom ipsw's with the iPad baseband installed and still no luck.
Keep getting No Service with an active T-Mobile SIM
11-26-2011, 10:27 PM #2
When you downgrade to 4.1 , kick out of recovery and use atnt sim to activate it, does it activate it before doing any jailbreak.
11-26-2011, 10:30 PM #3
Downgraded to stock 4.1. Kicked out of recovery with TinyUmbrella. Activated on iTunes with offficial AT&T SIM
The weird thing is, I had someone bring me another 3GS (new bootrom) this time. That 3GS was upgraded to stock 5.0. However his baseband was in an inconsistent state from the update. I downgraded it to 4.1 and reflashed the iPad baseband and used ultrasn0w on it and everything worked perfect.
I wonder why this one is giving me no service.... Wonder if it has anything to do with ultrasn0w or the phone being an old bootrom
Last edited by roflc0pter; 11-26-2011 at 10:34 PM.
11-26-2011, 10:34 PM #4
Does your atnt get service signal before any unlock ?
11-26-2011, 10:36 PM #5
11-26-2011, 11:00 PM #6
Can you flash again with redsnow 0.9.9b7b, browse to stock 4.1 firmware.
11-27-2011, 03:28 AM #7
I've done that twice now. Still the same results. No service.
11-27-2011, 12:56 PM #8
Have you turn off 3g yet
11-28-2011, 08:00 PM #9
I am having the same problem as you.....I have 3gs with old bootrom and custom upgrade to 5.0.1 and when i found out no unlock i downgraded to 4.1 and no service now...Tried to redo the 6.15 baseband...tried 4.2.1, tried 4.3.3...Still have no service....I have tried everything...on/off airplane...uninstalled ultrasnow and reinstalled it....Some thing is up with the old bootrom......
11-28-2011, 08:11 PM #10
Flash your iphone with Ipad baseband again, you can use Redsn0w 0.9.9b7 > select Extra > select ipsw > select back > select Jailbreak > select ipad bb
11-28-2011, 08:15 PM #11
I just did that i pointed it to 4.1..then did the baseband again....still no service...like the guy that started this thread....It if i go into settings,general,about...if i put any sim...it will show the carrier company....just no service
11-28-2011, 10:36 PM #12
Is this an ATNT iphone ?
11-29-2011, 04:24 AM #13
Apparently there is a method to get ultrasn0w working on 5.0.1 from HERE
I've tried it myself but no luck. I'm not sure if I did the whole CommCenterClasic part right...
11-29-2011, 08:49 AM #14
I hope ultrasnow is updated soon. This is my wife's phone. She is not happy with me right now.
11-29-2011, 12:55 PM #15
11-29-2011, 07:30 PM #16
Have you tried pwnage tool to create a custom 4.1 and re-install? I have a 3gs 6.15bb on old bootrom and was unhappy with ios 5.0 (location services constantly gave me a signal drop), so I successfully downgraded to ios 4.1 using pwnage. I did not reflash the baseband.
11-30-2011, 05:52 PM #17
4.1 Pwnage with and without iPad baseband doesn't change anything. Already tried awhile ago...