Tmobile branded Nokia 925 - getting internet sharing to work on Tmobile prepaid unlimited

[Wildflash]

I am trying to get my Nokia 925 internet sharing to work on the Tmobile prepaid unlimited data plan. Working with the instructions from the thread "Internet Sharing + MMS now working on AT&T 920 w/ USA T-Mobile SIM" http://forums.windowscentral.com/no...mms-now-working-t-920-w-usa-t-mobile-sim.html but I have not obtained a foriegn sim. One complication for the 925 from Tmobile is that SETTINGS>CELLULAR does not have the 'edit APN' options I am guessing because the standard Tmobile ROM has that disabled and instead has the Access Point app installed by default.
Has anyone got this to work. Thx