Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)
Yes that is incorrect. If the phones you receive are on 4.2.1, it'll be accompanied by a baseband that's currently unable to be unlocked.
Okay thanks, one last question.
Is there any harm in performing the JB right away with GP, in case the new iPhone 4/baseband unlock solution is contingent on jailbreaking with another application?
Or, is the expectation that the unlock will be released through ultrasn0w, thus executable through Cydia/ultrasn0w regardless of what you used to jailbreak?