Today I've made a guide to get the GPRS Active Text working on V6 MAXX. Also, this will works on V3XX, V9, Z9 and K3.
The text displayed when GPRS "attaches" (the icon with the white box with blue pentagons above and below it beside your signal strength) is stored in seem 01a8_0001.
It can be annoying because this text overwrites the date on your phone, and a lot of people don't like that. But there are some very quick fixes.
Here I'll teach you how to edit that to get your own text.

What do you need?
- Seem 01a8_0001 from your phone
- XVI32

1.- Open XVi32 and then, open the seem that you have downloaded from here.

2.- To get your own text you need to write in the boxes the words what you want.

Note that you need to got a square box between each letter. After you wrote your own text, replace all the FF to 00

and it's done.