hi....new user sgs plus...just finish update my firmware to after 5+ fail...(kies not that stable i think...zzz)...1 of things i find out the camera cmpression has been a lil bit better...got 1.2mb++ for 1 pic cmpare to 800-900kb before..1 tng i want to ask...if we upgrade the firmware..does it suppose to delete all of our personal data like cntact n mssage n our apps?bcoz it dosnt seem so to me...evrythng just like before but the firmware version does chnge to 2.3.5

can u tell me how?...android noob here...