Ricatech TAB07 Mode D'emploi page 18

 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").
Note: 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.