ACER z630S help

hi people :)
i really need help. so, i have acer z630s. few days ago came software update to 6.0. after update my clock doesnt go very well, it is allways late, sometimes even an hour and more. what to do? next thing is that i cant turn off automatic network search ( because of the place where i live and work i have to change netwok), but every time when i go to search says- cant find any network and allways do it automaticlly, witch is not great because sometimes it goes bad network so i cant choose witch one i want to use
if anyone have any solution- thanks :)
sorry for bas english :)

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