iPhone OS 3.1 has already brought some bad news for users who want to jailbreak and unlock their iPhone (at least until the [url=#]
iPhone[/url]
Hacking community figures out a way to hack it).
There’s more bad news, as iPhone users are also reporting that the tethering and MMS hack don’t work after upgrading to iPhone OS 3.
As you might already know, tethering and MMS features are still not available to AT&T’s iPhone customers even though Apple had introduced these features in iPhone OS 3.0 almost three months back.
AT&T announced last week that
MMS will be finally available to their iPhone 3G and iPhone 3GS customers on September 25 and there is still no news on when the tethering feature will be available.
In the meanwhile, some smart folks had figured out a way to enable both MMS and tethering features on the iPhone running iPhone OS 3.0.
iPhone users (including our wonderful readers) are reporting that the
tethering and MMS hack don’t work after upgrading to iPhone OS 3.1.
This was expected as we had heard reports that the beta versions of iPhone OS 3.1 was disabling the tethering hack. 
