I bought the SJ7 STAR from Alliexpres. It came in with the v1.20 FW. I upgraded it right away to v1.21. While recording everything seems OK. The problem starts when I try to play back the files. I get a bad rainbos (mainly green0 blocking type distortion on frame rates of 1080p 120fps and 720p 120fps/240fps. I uploaded to YouTube and the displaying issue goes away but the quality of image is still horrible and it's still very choppy. Like it will play a few frames OK then skip a bunch. I can post a link to the YouTube Playlist as well as the raw files on Google Drive.