Question

 Is it possible to downgrade iPhone 3GS new bootrom?

Answer Here are some options: 1. Your phone is turned off: press the button on the upper side of the Iphone for around 5 seconds.2. The sim-Lock on your Iphone is enabled so your phone doesn't work proper... Read More »
http://wiki.answers.com/Q/Is_it_possible_to_downgrade_iPhone_3GS_new_bootrom

Top Q&A For: Is it possible to downgrade iPhone 3GS new bootrom

Whats old bootrom on Iphone 3gs?

Check your model number....if it begins with "MC" then you have the new bootrom if it is not "MC" then you have an older bootrom also check the 4th and 5th number in you serial number if it is lowe... Read More »
http://answers.yahoo.com//question/index?qid=20100215101913AAh8WXQ

Is there anyway at all to downgrade from 3.1.3 to 3.1.2 on iPhone 3g?

Check the app store>updates to make sure all your apps are up to date, sometimes if they aren't, they get really glitchy or just don't work.
http://wiki.answers.com/Q/Is_there_anyway_at_all_to_downgrade_from_3.1.3_to_3.1.2_on_iP...

How do you downgrade an Iphone 4?

How do you downgrade your iPhone?

You can only downgrade if you've saved your SHSH. If you don't know what that is, then you didn't do it and there is no going back.
http://wiki.answers.com/Q/How_do_you_downgrade_your_iPhone


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