The New Updated  SJCAM SJ4000 WiFi/Non-WiFi Quick-Guide Manual 2016 is now available for direct download here.

Firmware that is featured is V1.4 
It is in English only for now, translations are on its way. 

The SJ4000 Detailed Manual is still in the works, and will be available soon.

CZ - Czech Version added September 28, 2016