How to enter Blu Studio 5.5 C D690U Recovery Mode, Hard reset (Wipe) and Pattern Unlock.
Recovery Mode Blu Studio 5.5 C D690U
- Turn off the device
- Press and hold Volume Up key + Volume Down
- While pressing these keys, press Power Key for A few seconds
- Release all key when a menu appears
- Press Volume Up to enter Recovery Mode
- Use Volume Down key to select Menu
- Use Power key to Confirm or Execute Menu
Hard reset Blu Studio 5.5 C D690U using External Keys ( remove your forgotten pattern unlock )
- In Recovery Mode select wipe data / factory reset
- press Power key to confirm
- select Yes — delete all user data, press Power key to confirm
- select Reboot system now to finish hard reset and press Power key to confirm
Hard reset using Settings Menu
- Turn on the device
- Select Apps
- Select Settings
- Select Backup and reset
- Select Factory data reset
- Select Reset device
- Select Erase Everything
- Select Ok
Warning! If you perform a hard reset, make sure to back up important data. The data can not be recovered after perform a hard reset. If you forgot your unlock pattern, It will remove your forgotten pattern unlock.