Unlock and Jailbreak iPhone 3G?

I'm running 4.0 jailbreak from redsnow at the moment with baseband 05.13.04. I needed to know if it is possible to update to either 4.1 or 4.2.1 with a Jailbreak and Unlock. If its an untethered jailbreak it would be ideal. Also please help me with download links and guides.
Thanks.
 
You can definitely update your iPhone 3G. Then you can have jailbreak and unlock for it. To jailbreak your iPhone 3G, You can visit absinthejailbreak.com and get the jailbreaking guide. To unlock your iPhone 3G, You can visit Simpleunlocking.com and get the remote unlocking service. This method of unlocking is safe, simple, affordable, quick and permanent. Good luck mate.
 
Back
Top