downgrading .... help
hi , i have a c6903 with a stock 4.4.2 firmware .757 but i have serious ram problems so now i want to go back to 4.3 firmware 136 but i heard some of the people that tried to downgrade before from 4.3 to 4.2 got a hardbrick so to my questions how can i safely downgrade my phone or there a fix for the ram problem ?
note i have downloaded flashtool-0.9.15.0 and C6903_14.2.A.1.136_Global-LTE_1277-2880_R1B.ftf , am i good to go ????