Putting T-Mobile Software on AT&T SX56

[bearguy904]

I recently purchased an AT&T SX56 and had it unlocked so that I can use it with T-Mobile service. It works great but it still has the old AT&T software on it Pocket PC 2002. I would like to upgrade to PPC 2003 which is available on the T-Mobile site, but I am concerned that flashing the device with T-mobile software will kill it. Has anyone had an experience with this? Will it work?? I can d-load the PPC 2003 from siemens for AT&T but I would rather have T-mobile.

[cruisin-thru]

Download it but only flash the ce rom part of it, dont flash the radio if you have a good working phone already, there is nothing there to damage your phone, people on this site have used roms from everywhere without problems, it is better to use the sd method for flashing using xdatools.

[scott1269]

but it told me my rom version was not compatible and aborted the upgrade. I have an att sx-56 that I unlocked by loading the special rom 3.17 ENG. So I'm running on that rom until I spot the next plan on here.

This rom is cool but can anyone tell me how to get the buttons to work when the phone is off again? Also the calendar language is not english any idea on where to set that?

Thanks love this site and the great people on here!

Scott

[Biso007]

Use the kitchen at http://xda.weblink.net/ to cook a TMO 4.01.16 ROM and use the SD card method to over come the version verification.

[scott1269]

Did as suggested above and then used t-mobile released version to upgrade radio... Now have the official t-mobile version of OS ROM and Radio. I miss the old special edition rom already!

Thanks everyone!

Scott