Yes, like I said I changed computer and flashing worked, no extra drivers needed… I just flashed the watch using SP flashtool.
Previous FW was 1.5 now it’s 1.6
Changes from 1.5 that I’ve noticed
*The Icons are different
*Boot animation stock google android, not zeblaze
*Watch name no longer “Thor Pro”, it’s only "X300 "In device info
*Stock keybord has been calibrated better to finger touch and the key  easy to hit now. Very good!
*Battery indicator was not functioning before, now it shows accurate procentage. VERY GOOD!
*HR rate was showing 80 BPM during jogs now it’s showing 140+BPM… VERY GOOD!
I’ve only used this firmware one day, I Will continue testing and report more differences