T46G with Fonality firmware

[chemish]

I was looking at using Fonality as my voip provider and got a few phones set up with them and then changed my mind who I was going to use so now I'm trying to use my phone with someone else. I have done factory resets through the phone and web interface and have even updated to the newest version of the firmware for my T46G but it still seems to have some Fonality branding and maybe settings that I would like to get rid of.

I know the Fonality techs had me run 2 files through the firmware upgrade and it looks like one of them wrote over some default stuff and I would like to restore it to how it was when I bought it new.

Is there any way for me to do this and get rid of anything Fonality on my device?