iPhone 3G after Jailbreak goes locked state

I updated my iPhone to latest firmware(iOS 4.1 which is part of iTunes 10) out of curiosity. And now my phone stands locked and unusable.

I tried out restoring through redsn0w_win_0.9.5b5-5 with the iOS 4.0 version but that didn't help anything after downloading the jailbreak version and pineapple man running my phone rebooted to come back to the same state as before and iTunes still showing the invalid SIM ...

Anybody out there to help me out

 

Update to 4.2.1 and then use Redsn0w to jailbreak and unlock it

 

I did that as well ... still my phone doesnt work
Please ...Please help me

 

boss,,

use redsnow 9.6b5

after kernel loading...just check the "install cydia" and ipad baseband"

after done..

unlock thru wifi...

good luck