We find that some functionality of the iphone is disabled as we are not using Vodafone's Network.. Vodafone says iPhone are not locked at all but when 3.1 comes out people using their iphones on non vodafone network (2Degrees, XT, Compass, Orcon, B&W..).
Vodafone says they don't lock their phones to their network and they don't but if you don't use their network then important functionality is removed. This will be something I will be taking up ...
But back to the Issue.. tethering... how do you enable it..
I remember the days when I had a 2G iphone, the method (well part of it) to enable tethering on them unofficially (it didn't actually work but it gave you the option)
so look at the important file..
State - 1020
Ah.. that number should be 1023.. so lets change it.. to 1023 and reboot..
and the tethering option now comes up :-)
note: as I am only running linux at the moment I cannot test if tethering actually works.. but I presume it does..
also I have not yet tested what happens if you plug it back into itunes if the option goes away but someone please let me know if you want to try..
btw.. you have to jailbreak 3.1b3 to do this but I'll let you work out how to do this..
Update.. plugged into windows machine.. and... tethering gets disabled.. and the state gets set back to 1020.. lets see if I can fix that..
Update: chmod -w com.apple.MobileInternetSharing.plist. reboot check. still there.. plug into windows machine via USB .. argh tethering disapears straight away and it goes back to rw back to 1020..... Maybe if I only tethering via Bluetooth it won't gets changed. need to test...
Update: connect via bluetooth.. Pair connection via bluetooth.. choose PAN access only connect.. you have been disconnected.. check phone.. it goes back to 1020 and tethering has been disabled again... back to the drawing board...