Share your experience!
xperia tx (L29), after updating to version 4.1.2, ON: 9.1.B.0.411 the camera (a mistake the camera is inaccessible) doesn't turn on
It happened the same to me when I updated.
I just did a had reset (pres volume+ and pwr button for a few seconds). When I restarted the phone, it worked.
Try it and let us know if it worked also for you.
Good Luck
unfortunately the camera still doesn't turn on, after recovery of version 4.0.4, the insertion 7.0.A.3.212 the camera works normally