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Step 2: Dial 611 (AT&T Customer Service) and drop the call. Step 3: Insert the T-Mobile SIM instead of the AT&T one.
Step 4: 'Forget' all wireless networks with automatic connection. Step 6: If everything has gone well and EDGE network has activated, as it should, you will see "E" at the top-left corner of your i Phone's touchscreen.
The new beta version does not have any new features but fixes performance bugs and is available to developers so far.
Supposedly, i OS 5.0.1 no longer has the battery drain problem, fixes the bug that caused the i Pad 2 Smart Cover security flaw and features additional security enhancements.
So if you are a developer and would like to jailbreak your newly updated i Phone with i OS 5.0.1, you will probably be glad to know that a jailbreak solution was released a day after the i OS 5.0.1 launch.
The i Phone Dev-Team was the first to present Redsn0w 0.9.9b8 that works its magic on the new firmware version and jailbreaks your i OS device.
But, as it turns out, the new exploit is effective for i OS 5.0.1.
Step 8: When you see a signal bar, press Use Cellular Connection. Insert your T-Mobile SIM once again, and your i Phone 4S should be unlocked.
Hacker i H8sn0w, the person behind the popular Sn0wbreeze jailbreak tool, followed with a jailbreak solution a day later.
Besides jailbreaking the i Phone, Sn0wbreeze 2.8b9 also fixes the i Books sandbox crashing problem allows for re-flashing the i Pad baseband on the i Phone 3GS.
Unfortunately, this miraculous unlocking procedure is effective only for AT&T devices.
Now, you should beware that we haven't tested this method yet and you will be acting on your own responsibility.