Xperia L (C1204) mobile switches off randomly

Hi,
I updated my Xperia L to latest patch and after successfully installing the update, I got 2 issues:
1. My phone switches off any moment (even when battery is full)
- When I try to switch it on, it doesn't even switch on. I have to remove the battery and then switch it on.
2. I don't have internet connectivity (Not even the E or H icon)
Please help me with this. 
Thanks.

Repair your phone with SUS or PCC then once its done 
Settings > Xperia > Internet Settings > download 
Update Service (SUS)
PC Companion (PCC)
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
"I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)

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