Help I updated jailbroken, unlocked 3GS from itunes, now locked out

[mbrow]

I updated my iphone 3GS through iTunes unfortunately yesterday. We had it jailbroken and unlocked in a shop so I didn't actually know what that meant until yesterday when I was suddenly locked out of it after the update. I have no idea what baseband it is using now or which firmware it was on before the update. I tried jailbreaking it with pwnage and version 5.0.1_9A405 but I get stopped when it won't activate since I don't have the SIM card that it is locked to. I just get a message that says something to the following "SIM card you are using appears to not be supported...etc." . What if I restore the phone to factory settings? Is there a way to activate and unlock it?

 

[dhlizard]

I updated my iphone 3GS through iTunes unfortunately yesterday. We had it jailbroken and unlocked in a shop so I didn't actually know what that meant until yesterday when I was suddenly locked out of it after the update. I have no idea what baseband it is using now or which firmware it was on before the update. I tried jailbreaking it with pwnage and version 5.0.1_9A405 but I get stopped when it won't activate since I don't have the SIM card that it is locked to. I just get a message that says something to the following "SIM card you are using appears to not be supported...etc." . What if I restore the phone to factory settings? Is there a way to activate and unlock it?

Use Redsn0w to hacktivate
Then figure out what baseband (modem firmware) ?
If it is iPad baseband, re-install it with Redsn0w