On this page, you will find the Download link of K&C W803 Firmware (flash file), which can be flashed on the device to fix it without the need of any other software.
K&C W803 Firmware comes as a zip file and is of 4 MB in size. Firstly, You need to extract the zip file on your computer and flash it using the flashtool.
The file version of K&C W803 Firmware is V1 and it was released on 14/06/2014.
File Name: K&C_W803_14062014.zip
Alternate Name: K&C W803 14062014
File Size: 4 MB
Developer: K&C Mobile.
Released date: 14/06/2014