I have Sony Xperia Z C6603. It came with Jelly Bean 4.2.2 on 10.3.A.0.423 firmware.
About 2 weeks ago I started to leave their own message of Sony to make an operating system upgrade to version 4.3.
As was Sony itself gave update.
=== Image: sony-update-center-android-4.3-10.4.B.0.569.png ===> (attachment)
From that moment he began to fail.
If I enable mobile data signal cell (does not recognize the SIM CARD) leaves.
Try to recover about 3 times and restarts. This process makes it hot cell
=== Image: mobile-data-enabled-android-dies.png === (attachment)
Attachment files Logcat and LogCat Extreme dmesg
Please Help me!!!