please someone let me know to upgrade 04.05.04__G to 05.12.01 on 3.0.1(7A400) original build?
Sorry, but your english is hard to understand. If you want the baseband updated, any 3.x standard firmware version iTunes restore/update will do that. If you want a jailbreak and/or unlock, those are easy. Look here: iClarified - Tutorials - iPhone
Um isn't 04.05.04__G a iPhone 2G baseband. You cant update that. That is the last baseband they got.
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