Xperia L update problem

[Shaarad]

Hello everyone, recently I received an update notification when I connected my phone to laptop. It said the update of 15.0.A.2.17 to 15.3.A.0.26 and also Android Jelly-Bean 4.2

I started the update procedure and Sony PC Companion downloaded whole update to my laptop. When it started installing it on my phone, It gave the following error screen.

I restarted my phone and it is working properly (not updated). Whenever I try to download the update again, it PC companion still throws the same error message. I tried rebooting the laptop and also downloaded fresh setup of PC Companion from Sony website and repaired my copy of PC Companion, but the results are same.

    Can anyone tell me how to resolve the provlem and update my phone?

[Alexander1]

Check your firewall settings as suggested in the error message above. If you have allowed PC Companion and Sony Ericsson Update Engine in the firewall and still experiencing problem I suggest that you try with Update Service instead of PC Companion: 

http://www.sonymobile.com/global-en/tools/update-service/