How can i update version?

PS Hamoon, If you actually have AVG 'paid for' version post what you using.
AVG Guru

Hamoon, Download, save & run the full 32 or 64bit install file (http://free.avg.com/ww-en/download-free-all-product) whichever suits your system & choose the 'Repair installation' option.
AVG Guru

Apparently you do not have to "download, save & run" a 5557 installation file.
Control Panel > Uninstall a program > AVG 2015 > Change > Repair
Restart the PC when prompted.

AVG Swami

i have avg 2015 version 5315 but latest avg 2015 is version 5557 , how can i update version?
i downloaded latest version and run it but didn't install new version and still i have avg 2015 v5315.

Hamoon, Download, save & run the full 32 or 64bit install file (http://free.avg.com/ww-en/download-free-all-product) whichever suits your system & choose the 'Repair installation' option.
AVG Guru

Apparently you do not have to "download, save & run" a 5557 installation file.
Control Panel > Uninstall a program > AVG 2015 > Change > Repair
Restart the PC when prompted.
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AVG Swami

I'm also still running 5315 and beginning to have the same question. I have tried updating via Control Panel, but that only gives me another database update. So is it a known issue that 5315 is incapable of normal program updates? And is there an article that describes the procedure you have just recommended?