ipad sim with 3GS APN issues

[kuroshiro]

So, I have a 3G ipad with an unlimited data plan. I have a 3GS that I'm not using as a phone that I want to use as a hotspot, using the ipad's sim. I was able to get this up and running on an original iphone running 3.1.3 with no trouble. However, with iOS 4, it won't let me enter the data settings (because obviously, AT&T settings exist already) and it won't choose the proper one, even though that's in the list as well (there are 5 different settings in the plist)... I tried using unlockit.co.nz with no success.

Has anyone gotten this working under iOS 4? I'd really rather not go back to 3.1.3 if I can help it. (Yes, the 3GS is jailbroken and unlocked)

[GenesisDH]

I have done this. It takes removing all references to the AT&T carrier bundle. I don't have a iPhone plan (and don't intend to), so the preinstalled bundle was of no use to me.

Once you remove the carrier bundle, then the Cellular Data field opens for you to input the settings manually, including the internet tethering settings. This is because the phone is now defaulting to the 'Unknown carrier' bundle when you use your AT&T SIM.

[kuroshiro]

So, what's the safest way to get rid of the carrier bundle? I poked around on console, and obviously I could just delete the directory and the symlink, but is there any other way?

[GenesisDH]

So, what's the safest way to get rid of the carrier bundle? I poked around on console, and obviously I could just delete the directory and the symlink, but is there any other way?

Either that, using iPhone Explorer or some desktop tool, or using an iOS app like iFile. That's about it.