On this page, you will find the Download link of Symphony BL40 Firmware (flash file), which can be flashed on the device to fix it without the need of any other software.
Symphony BL40 Firmware comes as a zip file and is of 3 MB in size. Firstly, You need to extract the zip file on your computer and flash it using the flashtool.
The file version of Symphony BL40 Firmware is V1 and it was released on 07/03/2016.
File Name: Symphony_BL40_07032016.zip
Alternate Name: Symphony BL40 07032016
File Size: 3 MB
Developer: Symphony Mobile.
Released date: 07/03/2016