Hello. You will have to reload the tablet's firmware. See the link below for instructions.
For Mobicel Cherry Tablet Dual SIM: http://www.satechhelp.co.za/14544/Download-Flash-Mobicel-Cherry-Dual-Sim-P9120-Stock-Firmware
For Mobicel Cherry Tablet Single SIM: http://www.satechhelp.co.za/10994/Mobicel-Cherry-Firmware-Download-Flashing-Tutorial