I am a registered developer, however wish to use a non-approved SIM (otherwise I'd just activate normally!).

I was informed that by doing an UPGRADE from a jailbroken/unlocked/activated 2.x firmware, the activated state would remain.

My iPhone 2G was unlocked/jailbroken/activated 2.2.1 firmware. After i upgraded to 3.0 beta, my iPhone has become an iPod touch. 3.0 beta recognizes that my T-Mobile SIM is from an approved carrier. Don't know if there's a way to get around this now.

I didn't get it.

After you upgraded to 3.0 beta, TMo SIM was still recognized as a valid SIM, however phone capabilities were not available? Is that right?

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Mandatory reading: [ALL MEMBERS] Jailbreak is not Activate is not Unlock

My T-Mobile SIM was not recognized as a valid SIM. Even though i could see the T-Mobile carrier icon and the signal strength (the bars). I get the "Different SIM detected - Please connect to iTunes" message. At that point, unlocking the screen will only lead to the emergency call screen. If i remove the T-Mobile SIM and leave the SIM slot empty, i will get the "No SIM card" message but i get the full functionality of my iPhone minus the phone capibility.

Hope this helps.

I had a typo. I meant to write "3.0 beta recognizes that my T-Mobile SIM is NOT from an approved carrier".

If you use quickpwn, u lose activation when u update.

Wasnt there?

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There's no patch for stupidity

It's very usable, but lags quite a bit more than my Jailbroken 2.2.1. Several apps are no longer working for me: RPNcalc, eBay, Pandora so far that I've found.

Can anyone post the MD5 of the 1G firmware? Just want to make sure I have an error free file.

I seem to be unable to downgrade my 2G to an earlier firmware using iTunes. Putting the phone in DFU is no problem, but during the restore (tried 2.0, 2.2 and 2.2.1) I always end up with error 1604 in iTunes. Does anyone have an idea to what I can try next?