Thanks to Imahottguy now we can make our baby rokr get quadband

follow this:

You´ll need RADIOCOMM! this is warez software... just gioogle it its easy to find

1.- Open radiocomm program
2.- Connect your Phone in Modem mode Mainmenu/Settings/Connection/USB Setting/Modem
3.- Go to 'GSM2' Tab click on it
4.- There will be four fields Right down the tab, enter on that fields the next numbers in this order
0032
0001
0050
0001
5.- Press “RDELEM” with this we´re going to read that part of the seem!
6.- You´ll get a 3A text... change it to 3B
7.- Press “STELEM” with this one we´re going to write the seem we modded
8.- Restart the fone

Now in order to change the "technology" text from “Tri-Band” to “QuadBand” do the next

follow the same of the first mod... open radiocom and open gsm2 tab
1.- Change the fields to:
0171
0001
0000
0008
2.- make it read the seem with RDLEM
3.- YOU´LL GET THIS STRING “005400720069002D”
4.- change it to “0051007500610064”
5.- Restart, the fone and check it