Best way to update my iPhone 3Gs - info needed?

Girish

New member
Hey guys,
I recently bought an iPhone 3Gs from At&t. It has a 4.3.4 firmware and 5.16.02 baseband.

I would like to jailbreak and unlock without loosing my GPS functionality.

I know that ultrasn0w cannot unlock my phone since 5.16.02 its an unsupported baseband.

so i probably can only jailbreak my iphone.

which is the best way to jailbreak my iphone preserving the baseband so that i can unlock at a later date when ultrasnow actually supports my unlock. dont want to screw my unlock for the future.

any suggestions?

also, should i downgrade to an earlier firmware? which jailbreaking method to use? any links? any articles? any tutorials?

Thank you
 
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