2 days ago i was upgrading my k800i to k810i with this firmware (K810_R8BA024_MAIN_GENERIC_SM_RED52) and until now everything was working good ... today i've entered to calculator and that's what i see:
sorry for the quality

ps, i can use the calculator but i can't see the math functions ...
please help me to fix that ...
regrads,
moshe
