Lenovo A850 Too many pattern done
Care your phone battery charge is full Get imidiat your phone power off and hold Power botton + vol up holding 4-5 sec now show Recovery mode Fastboot mode Normal mode Select recovery mode with vol up Now show 1-reboot system now 2-apply update from adb 3-apply update from sdcard 4-apply update from cache 5-wipe data/factory reset 6- backup user data 7-restore user data select wipe data/factory reset now show is no no no no yes delete all user data--------- no now selected yes delete all user data wait some time again show 1-reboot system now 2-apply update from adb 3-apply update from sdcard 4-apply update from cache 5-wipe data/factory reset 6- backup user data 7-restore user data now selected reboot system now restart your and enjoy it