On this page, you will find the Download link of Sansui S50 Firmware (flash file), which can be flashed on the device to fix it without the need of any other software.
Sansui S50 Firmware comes as a zip file and is of 5 MB in size. Firstly, You need to extract the zip file on your computer and flash it using the flashtool.
The file version of Sansui S50 Firmware is V1 and it was released on 20/08/2015.
File Name: Sansui_S50_V10a_IND.zip
Alternate Name: Sansui S50 V10a IND
File Size: 5 MB
Released date: 20/08/2015