On this page, you will find the Download link of Byond Thunder Firmware (flash file), which can be flashed on the device to fix it without the need of any other software.
Byond Thunder Firmware comes as a zip file and is of 57 MB in size. Firstly, You need to extract the zip file on your computer and flash it using the flashtool.
The file version of Byond Thunder Firmware is v1 and it was released on 25/10/2011.
File Name: Byond_Thunder_25102011.zip
Alternate Name: Byond Thunder 25102011
File Size: 57 MB
Developer: Byond Mobile.
Released date: 25/10/2011