T-Mobile XDA with AT&T Software?

[Mikkel]

All,

I have a US T-Mobile Pocket PC Phone edition. I am using it on AT&T's GSM netwotk in the US, and everything runs ok after removing the SIM lock.

However, AT&T has a set of "acceleration" utilities for the GPRS data connection. This might be nice to use to try and compress or proxy (or whatever it is they do) to save a little bit of data and thus money.

I recently downloaded the latest software package from my-siemens.com for the SX56 device.

Could this work? AT&T software in the T-Mobile device? What precations could - should I take prior to attempting running the AT&T installer in the hopes that it will upgrade / overwrite the T-Mobile software?

Any other thoughts / ideas? Has anybody tried this?

Feel free to email me at mikkel@optonline.net

Thanks :-)
Mikkel

[md]

Hi,

I downloaded the Siemens AT&T update with the intention of installing
it on my T-mobile. However when you run the update program it
says that it cannot install because it is not compatible with the existing
system. So it looks like this is not an option


All,

I have a US T-Mobile Pocket PC Phone edition. I am using it on AT&T's GSM netwotk in the US, and everything runs ok after removing the SIM lock.

However, AT&T has a set of "acceleration" utilities for the GPRS data connection. This might be nice to use to try and compress or proxy (or whatever it is they do) to save a little bit of data and thus money.

I recently downloaded the latest software package from my-siemens.com for the SX56 device.

Could this work? AT&T software in the T-Mobile device? What precations could - should I take prior to attempting running the AT&T installer in the hopes that it will upgrade / overwrite the T-Mobile software?

Any other thoughts / ideas? Has anybody tried this?

Feel free to email me at mikkel@optonline.net

Thanks :-)
Mikkel

[Peter Poelman]

Just copy our adaptROM program (http://xda-developers.com/adaptROM) to the directory where the AT&T upgrade has installed, run it, and then run the upgrade ("Programme A"), and you're all set.

[Mikkel]

Hi

Thanks for the tips & advice.

I ran adaptrom. If I understand correctly, I should now be able to flash the AT&T rom into my T-Mobile device?

I am concerned with all the postings here about folks having fried their devices after flashing. It seems that upgrading the radio software is especially sensitive?

So... Has anybody out there tried flashing a T-Mobile device with the AT&T radio & Win CE rom images?

Any special hints? Anything to be aware of prior to attempting this?

Sorry for all the questions, I just would really really hate to damage my device (I love my XDA, does that make me a bad person?)

Anyways, thanks all for all the interesting posts, and THANK YOU to all the XDA developers, you guys truly rock!

/Mikkel

[Anonymous]

i did it successfully on mine. word of advice is to hard reset ur t-mobile before u run update. then it works without problems.


alex

[Mikkel]

i did it successfully on mine. word of advice is to hard reset ur t-mobile before u run update. then it works without problems.


alex

Hard reset... As in using the tiny button with the battery icon to completely reset the device, or just a "normal" hard resent from the other little hole on the other side of the SD card slot?

[Peter Poelman]

A 'normal' reset is usually called a 'soft reset' (big hole), a 'hard reset' refers to the small hole and wipes the contents of the RAM, and thus everything that is not in ROM.

[Mikkel]

Kinda off topic but.....:

the current setup I have with the T-Mobile ROM running on AT&T's US GSM/GPRS network gives me about 11 kilobits/second as the highest speed.

This is, as far as I can tell, equal to one "channel" or "Timeslot" in the GPRS world.

Is it likely that changing to the AT&T firmware would allow me to use more than one channel (The device would be a "type 4" or "type 8" or something)?

Or in other words: Would I get more speed over GPRS from doing this?

[Mikkel]

Alright, performed the upgrade as per the instructions in this and other treads.

IT WORKED!!!!

My T-Mobile device is now running AT&T software. How cool is THAT??!?

[MrDollyMaker]

Do you still have internet access? I seemed to have lost mine. Everything else works great.

[Anonymous]

MrDollyMaker,

u don't loose interet access. after u flash the rom u can no longer use auto configuration of t-mobile gprs. u have to manually configure it. i noticed on mine when i did the update i had to wait couple of hours for it to kick in.


alex