HTC ONE V - rooted, no possible to call or receive data (after android auto-update)

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http://forum.xda-developers.com – Hi, my rooted android phone HTC ONE V was recently updated and after update sometimes i am off signal for some periods of time, i cannot use mobile data and call sometimes. It`s still changing. I tried restarts,swap sim cards but problems are only on my device. However it seem that when i have signal i can receive mobile calls. Device does not work good, is there any way how to find out which update caused problem and rollback just that update ? How to get any system logs etc. ? I dont want to restore whole phone and lost all settings, that`s last option for me. Android version 4.0.3 (HowTos)