Wingsland Camera Firmware
++Note++ Make sure after you have done your upgrade or downgrade you power down the S6 and delete the WingsLand.bin file from the sd card!
Also to be on safe side , I would advise you reset your camera settings in the app after upgrading/downgrading firmware.
The above S6 Camera firmware file S6X70807 comes with these changes listed by Wingsland at the time.
And these were:-
1. Optimize camera system configuration;
2. Initialize automatic calibration parameters;
3. Optimize user experience.