I couldn't get my SJcam to work. turned out it was the cable. Had to use a magnafying gkass to see it but the pins on the inside of the plug were bent. Found one online at USBfirewire.com.
I tried this mod and greatly improved lock times from 5 mins. down to 1min. Instead of cardboard I 3D printed a cover i made the file is posted on Thingiverse if anyone wants it