aayushjoshi said:i have a iphone 4 on 4.2.1. with baseband 3.10.1 shld i try the JB or not?
phoenix844884 said:Its pretty simple . You just need to follow 2 guides properly and it can be done in 5-7 minutes max.
1)First step is to download the latest 4.2.1 firmware file for your device and update it.
2)Restore your phone completely to new 4.2.1 as per this guide.
Update iPhone 3GS / 3G Baseband to 06.15.00 with PwnageTool 4.1.3 for iOS 4.2.1 Unlock [Guide] | Redmond Pie
^ Then follow the guide above completely till you have a jailbroken iPhone .
After that you can unlock it using this guide -
Unlock 4.2.1 iOS on iPhone 3GS / 3G with Ultrasn0w 1.2 [Guide] | Redmond Pie
That's it , your phone will be unlocked.
Thanks FaH33m for guiding me in the right direction.
By unlocking I think you mean 'activating' the phone right at the beginning. If your phone was initially locked to O2 and always required O2 to make calls, then the above mentioned guides will free you of that carrier lock.krisdkiller said:My phone was initially locked with O2. for unlocking had to use a O2 first coz otherwise the only thing tht i cud c on the screen was a wire.
now if I first update my IOS to 4.2.1 will tht wire thing come again which i am guessing was a lock so tht its only used with O2.
or i will be able to see the menus and use this guide to unlock it again after updating it.
Because it works for all basebands.aayushjoshi said:Guys can i JB my iphone 4 running on 4.2.1 with baseband 3.10.1?
I do saw the guide on iclarifieddotcom but it doesnt mention for which baseband it works?
phoenix844884 said:By unlocking I think you mean 'activating' the phone right at the beginning. If your phone was initially locked to O2 and always required O2 to make calls, then the above mentioned guides will free you of that carrier lock.
And yes, when you update to 4.2.1, the phone will again ask for an original O2 SIM card to get activated. Put in the original O2 SIM and get the phone working in iTunes. After that Jailbreak and unlock it easily.
Its actually a semi-tethered jailbreak. The iPhone will boot up just fine as a stock device, only the jailbreak stuff won't work.Switch said:Well you would be able to once the unthetered would be out you simply would have to download the redsnow update from Cydia and it would just reboot the device once and it will work. But I would have certainly avoided a thetred jailbreak for a iPhone as there could always be a situation where your phone switched off cause of battery drainage and you have no acces to a computer and you realize you don't a phone to call.
IceFusion said:I have jailbroken a number of iPhones... never needed a SIM card...
just get one of the tutorials as above or from iClarified - Apple News and Tutorials which let u unlock and jaibreak the phone...
otherwise give it to me for a day would do it