Hey there -
I know where you are in the process. You're nearly there!
Note: I am on Firmware 2.1. I have not upgraded to 2.2 yet...
Here is the basic process, but the exact tools you need may not be ready yet. So... check out this process for 2.1 and you'll see where you are:
1) Download iFuntastic for Mac, here:
iFuntastic™ by bitSplit™ Enterprises - v 6.2
(Note: Current posting says they are only up to Firmware 2.1, so you may have to wait a moment --- OR --- search for a way to edit your firmware the same way iFuntastic does.
2) Once you have a text editor, you have to work through the iPhone's file structure till you get to the following:
\Preferences\Library\Carriers\
3) The main thing you need to do in this area is:
a) Modify the carrier plist in the AT&T folder, replacing it from the carrier plist in the Unknown Carrier folder.
4) Once you replace the existing AT&T file with the Unknown carrier plist, you reboot the phone and then add the word "proxy" in the settings/general/network/cellular data network. You leave user name and password blank.
5) Once you have those settings in, MMode EDGE works great.
NOW...
Here are 2 points:
1) Because iFuntastic does not work with Firmware 2.2, you'll have to search for another resource for modifying the carrier plist file.
2) Good new is, if you can manage pwnage, you'll no doubtedly find a way to tap into the iPhone's file manager.
___
OK ... that said, here is another reference on how to do the carrier plist swap. This example also uses iFuntastic so you'll get to improvise.
http://www.modmyi.com/forums/t/25001...ml#post1573531
Good luck! Hit me back when you nail it! Long live Mmode!!!