[HELP] How do I get UMTS(1700+2100) USA T-Mobile

[mushufasas]

I hope is not a noob question, I searched and found nothing about this problem!

At the phone band options I have:
Auto
*UMTS(900+2100)+GSM(900+1800)
*UMTS(850+1900)+GSM(850+1900)
*UMTS(800+2100)
*UMTS(850+2100)+GSM(900+1800)
*UMTS(850)+GSM(900+1800)
*UMTS(1700)

The question is how do I get UMTS(1700+2100)+GSM(850)????????

If anyone knows how please help me, I can't get the 3G to work
The Diamond I have is made in Taiwan and a bought it at an T-Mobile shop!

[stepw]

I hope is not a noob question, I searched and found nothing about this problem!

At the phone band options I have:
Auto
*UMTS(900+2100)+GSM(900+1800)
*UMTS(850+1900)+GSM(850+1900)
*UMTS(800+2100)
*UMTS(850+2100)+GSM(900+1800)
*UMTS(850)+GSM(900+1800)
*UMTS(1700)

The question is how do I get UMTS(1700+2100)+GSM(850)????????

If anyone knows how please help me, I can't get the 3G to work
The Diamond I have is made in Taiwan and a bought it at an T-Mobile shop!

You can't without soldering RF amplifiers from a G1 to handle t-Mobile UMTS frequences.

[ND4SPD]

Actually editing the Radio ROM would do so. I contacted jockyw2001 awhile ago about doing so and he said that there are no tools currently available for us to edit the chipset microcode in order to do so, even though the rest of the process is supposedly easy.

[randyrubb]

Hello you wrote


At the phone band options I have:
Auto
*UMTS(900+2100)+GSM(900+1800)
*UMTS(850+1900)+GSM(850+1900)
*UMTS(800+2100)
*UMTS(850+2100)+GSM(900+1800)
*UMTS(850)+GSM(900+1800)
*UMTS(1700)


I wish to have this options too. What ROM is that who support all the one above ..

THANKS