US AT&T Atrix is unlocked. I have mine unlocked and am willing to test, and I know tons of people on XDA would be willing to help test. I have went back to using my Nexus 1 after playing with the 2.3 MIUI. The Atrix really needs a polished ROM like this. I tried MIUI in it's beggining stages and wasn't really impressed, but I am blown away with how far it has come. If someone is actually going to work on porting this, start a thread on XDA and you will have lots of testers to help and devs familiar with working with the Tegra2 chipset.AT&T. This is just a test build, keep in mind. I don't even know if the Atrix is unlocked on the US, so until I figure that out, I took the link down.