Palm Pre syncing and AT&T tethering workaround both broken with Apple updates

As most of you probably know, Apple recently released iPhone 3.1 beta 2 to developers to play with. Along with some bugs fixes and improvements in code, this update features the breaking of the IPCC hack we saw that enabled tethering for AT&T early on the iPhone. Since AT&T won’t be supporting iPhone tethering until later in the year for an undetermined price, this is sort of a bummer for the people who found this workaround useful.