Please check
Settings
–
Applications
, make sure
Unknown sources
is chosen.
7) There is Error Codes on the screen.
·System error, restart the device.
·The language you are browsing is not supported by built-in languages, please contact the
original manufacturer to debug.
8) There are problems of system, many popup of error.
Restart the device by POWER button for 10 seconds, the device will restart
If you have restarted the device and error popup still exist, you can check active
applications to see if there is any unknown application, uninstall it if any.
There may be virus in the device, please install security applications and protect your
device.
If you have problems after above operations, the device’s firmware needs rebuilt ( the
operation is named “flash”). Notice: Before you flash the device, please back up your
storage, the flashing will make all settings and files turn to factory default. Flashing
operation need flashing tool and firmware, please contact original manufacturer for
flashing operation.
9. Manual Version
This user manual is ONLY for KARBONN, manual version: COBRA