The change logs will be the same as 6.3.0, and some playback instability has been fixed. Change logs: System 1. Added the support for MP4 Dolby Vision dual-track dual-layer file. 2. Optimized the stability of local Dolby Vision playback. 3. Optimized system stability. Player 1. Optimized the display of information user interface. 2. Added CLEARLOGO on poster wall when starting playing. 3. Optimized some language translation. 4. Optimized playback stability. Poster wall 1. Optimized the settings of the scraping source. 2. Increased the duration sorting function. 3. Added TVMAZE online matching for TV series. 4. Added TVDB V4 interface function. 5. Added local trailer only setting. 6. Optimized the matching accuracy. 7. When sorting by duration, the poster will show the duration of the video. 8. Optimized scanning stability. Music player 1. Optimized playback stability. 2. Optimized the interface for obtaining album cover. 3. Fixed the problem that the bit rate of music is obtained incorrectly somtimes. 4. Fixed the occasional issue that some audio file cannot be played. 5. Fixed the occasional lag problem when playing some high-sampling-rate music. 6. Fixed the problem that the data in the playlist is occasionally incorrect. 7. Fixed the problem that the device status is incorrect after the scan occasionally flashes back. 8. Optimized audio file sorting function. Quick settings 1. Added HDMI signal format settings. 2. Optimized HDR settings. ZD Link 1. Added screen mirroring background playback function. 2. Added AirPlay music screen mirroring function. 3. Added Spotify music screen mirroring function. 4. Optimized the problem that some video software cannot cast screen. 5. Optimized the problem that the PC cannot be cast to the screen. 6. Added Play/Pause key response function for screen mirroring background playback. 7. Fixed the problem of entering into screensaver when playing video. 8. Optimized the stability of the screen mirroring. OTA 1. Added beta version receiving option. 2. Optimized partial display. Home page 1. Added shortcut options(For Z1000 Pro, UHD3000). 2. Added weather display in the right top corner of the home page (For Z1000 Pro,UHD3000,weather diaplay can disable in settings). 3. Fixed the problem that the file manager shortcut does not display. 4. Added the application version in popup menu(For Z1000 Pro, UHD3000). Download:Check online update. If you have upgraded 6.3.0, should be enable the "receive beta version" option.