Hi! Got a serious problem, on very old phone - SonyEricsson W810i.

My friend have some problems with this phone and after servicing it, couple a days later come to this - see the attached pictures they will explain better than me.

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Any suggestions what to do? What files to renew(flash) in phone?
New at phone flashing; I read a couple of tutorials on web, but don't want to do anything before consult You.