No more Picture messaging :(

So the main reason I got my w810i was for the picture messaging....

I have a red 49 cingular branded phone. My service provider is T-mobile in the US.

I flashed it and loaded the T-mobile UK custpack to make it work, now it doesn't let me send picture messages! It keeps asking for me to set up an MMS profile but nothing seems to work. I don't know but I'm guessing this is something that is done in the UK but not US....

I tried going to the sony ericsson website but they don't have software that supports my predicament; t-mobile does not care the w810i in the US. Obviously the t-mobile website was no help either.

Can anyone point me in the right direction to fix this? Is there a patch or a method of using maybe different firmware?

Thanks in advance!

The phone is now pre-loaded with UK T-Mobile MMS settings. That's why you can't send MMS. Either manually input the settings (which you can search online), or use official SE website and select any recent phone model, or create and load your own mini custpack by editing existing US T-mobile custpack for other phones.

Or use T-Mobile configurator and select any new SE model
T-Mobile Wireless Data Configurator

And? You solve ur problem? Images back on messages?