ramrajone
Thank you for your help,
actually i have tried a lot with the mentioned requirements (PHP 5.6) before positing here, on a test server ( where i have already working osticket with no problem ) but no point so i updated the php to the highest ver. and also no point as discussed above.
For lang packs, i have never installed languages packs , neither tried to update with it.
But after many tries i did it !!
the solution for the second error was disabling SElinux as i'm running it on linux environment.
the first error as i have read, it was said that ost_translation error is ok with it if it didnt affect any functionality on the system and in my case it didnt, so everything should be ok now especially i dont use any lang packs other than the default.
FYI: i had other UI errors like could'nt create tickets it was showing only white screen when submit, it appeared that some of the forms where duplicated for some reason after upgrade ( same form_id with same form_type ) so i solved this by deleting them (ensuring that it wasn't used before)
Thanks again
Regards
finally the update was done now with