Camera not turning ON or completely dead !!
When you have gone on many sites to read and try to revive the camera and failed here is another tip I discovered :
1- Connect the camera with battery and no SD to the Dual Hero System one or more time ... Red leds on the DHS should blink.
2- Connect the camera with no battery and no SD to the Dual Hero System and plug it with the GoPro cable to a charging only 2x USB power supply
3- If the charging red LED turns on try again to turn it on !
4 - Adjust the camera parameters (Date, etc...)
To be sure the camera will be working in the next hours ...
5- Turn simple WIFI ON
6- Insert battery
7- Insert µSD card
8- Turn OFF camera
The camera will emit blue light every few seconds.
9- To avoid discharge of the battery, plug and leave the camera connected to a USB power supply.
To check firmware of the camera
1- plug it to a PC
2- Right click on the camera and choose Properties or read text file in SD/Misc
Hope it helps !
For feedback please write to me at sweiller donut free dot fr