1.【Force to reboot】Hold power + pause button simultaneously for 10s.
2.【Factory data reset】Under OFF state, hold power+previous track button simultaneously, choosing "Wipe data/factory reset" to restore to factory mode).
3.【Fail to turn on or charging】Try other power adapters and charging cables.
4.【Extract a LOG file】For special software issues, please extract a LOG file and send it to us for analysis. Click to see how to extract