Both my Rockchip players will only save settings if I switch off holding down the Play/pause button, if I switch off using the on/off slider switch then any changes I made recently are lost.
Maybe this is your problem, the settings are not lost altogether using the on/off switch, just the recent settings, To save your setting just shut down the player by holding the play/pause button, hope you understand what I mean!
You can set the player to default settings by going into "Settings" from the main menu.
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