I tried but it failed to update. i had to restore with 3.0 Beta 2 and i lost my activation and had to restore back to 2.2

Anybody succeded?

do you have vallid developer account ?

Beta 2 works fine on an unlocked 1G. Upgrade using the same procedure as for beta 1 (downgrade to 2.02, quickpwn RC3, upgrade to 3.0 beta 2, restore from backup).

Youtube is still not working though.

Yes i have

Yes. If you are not registered, there's no way you are going to get 3.0 to work as far as I know.
Not until there's an official release.

FYI : Since I went to beta 2, I've been unable to retain my lock. It just won't do the upgrade onto an unlocked phone and I have to restore instead which looses the unlock.

Correction to my previous post:

I had confused and messed up my upgrade path to 3.0 beta by putting in my legit sim, and so was getting "A different SIM detected" error. I corrected this and now have beta3 unlocked. :-)
If you have a working unlocked 2.2.1 1G phone then just simple shift(or option)-upgrade to 3.0 should still work for you too.

For those wondering, I just upgraded my beta 2 to beta 3 directly without having to downgrade first. My activation worked just fine, even though initially it showed 'No Service', soon as I jailbroke it using the new Quickpwn, everything works.

I see this in Beta 3 for 1G

Settings -> Messages -> MMS Messaging [On/Off]

Thought 1G doesn't support MMS. Also, when I go to Settings - > General -> Network -> Cellular Data Network -> Nothing appears.

Pioneers on 1G, any advice would be great

Thanks in advance.

__________________
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 MBP (Model - MB471ZP/A)
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 8GB Apple iPhone (Model - MA712LL | Version 1.1.1 OTB | BL 3.9) - [Pwned] Version 3.0 (7A341) | Modem Firmware 04.05.04_G
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I've just complete upgrade from 3.0 beta3 to beta4 using pre-release iTunes 8.2 with no problem. All seems well and unlock is retained.

stuuu:

Is your iPhone registered with a developer account with apple? are you using a supported carrier?