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is it possible to downgrade iphone 4 firmware if u haven't saved SHSH??
by taking shsh from iphone 3gs??:confused:
i recently jailbreak my iphone 4 and it has upgraded it's firmware to 03.10.01 an di heard there is no unlock for this. :(
so any solution for to unlock iphone 4?
The is no 3.0 firmware for iPhone 4, youre referring to your current baseband.
I'm pretty sure if you upgraded you're on 4.2.1 and no you can't downgrade unless you have saved SHSH Blobs. Even if you could downgrade the firmware, your baseband cant be downgraded to an unlockable baseband so you have to wait for an unlock.
The bottom line is that there is no unlock for iPhone 4 on 03.10.01 Baseband
You can find your iPhone 4 software here: iPod, iPhone and iPad Firmware Download