[indergsm]

press and hold vol up+pwr key,
now u see green screen.don't release volume up key,
after few seconds u see red screen
now release vol up key.
now u see recovary options.
sel wiping data factory reset & press pwr key 2,3 sec.
now select yes delete all user data and press pwr key 2 sec.
now restart device
.....ENJOY

BR,
INDER