Hi, I'm a spanish user of one e1901_v77_jdt1_9p017 mobile (with JB 4.1.1). I have tried to root it using up to four methods (including Root_with_Restore_by_Bin4ry_v18), but no success. Please, could you detail the process to root this phone?. Is absolutely neccessary to flash a new rom to do this?. I would appreciate your help very much.