Galaxy Nexus; no signal after flash roms I have a 'Maguro' Galaxy nexus, purchased from O2 in the UK.  I am now in the US on T-Mobile.

My phone was working fine until yesterday I flashed the most recent CyanogenMod nightly, now I get no signal. Under Network Operators I get a list of AT&amp;T and T-Mobile but clicking either gets an instant fail.

I've now tried flash all kinds of Baseband to it, XXLJ1, UGLL1, TDVMK1 to name a few.
I've tried installing the google 4.3, 4.2.2 and 4.1.2 images, all of which come with XXLJ1 - still no luck.

My previous ROM was a stock (but rooted) 4.1.2 (I think) , but I have no idea on the radio.

Any suggestions what I should try next?

Update:
I've just checked my IMEI number and the one the phone reports no longer matches the one on the sticker :\
I had the same problem, and the solution was to re-flash the stock ROM.