Sacado de la web de Zidoo:

Change Logs:

Syetem
1.Optimized https download of transmission in openwrt
2.Fixed random no sound occurred in extreme NFS and SMB internet environment .
3.Fixed abnormal play of Individual source .
4.Added chapter selection of MKV videos.
5.Added Control 4 certificated drive. Drive download:https://drivers.control4.com/solr/drivers/browse?q=zidoo&fq=certified:"true"
6.FIxed Individual TV’ (Such as Samsung KS series) splash screen problem when plays in 4K 24Hz 10bit YUV444.
7.Fixed no dispaly of some TV when restart them after sleep mode.
8.Optimized system stability .

Launcher
1.Fixed date display way of main interface when language setting in Chinese

Music
1.Optimized accuracy of matching .
2.Optimized stability .
3.Optimized SACD matching and added matching of info files.
4.Added matching function of album.
6.Optimized analysis of album related information.

Home Theater
1.Fixed possible program exception error caused by cancel collection.
2.Optimized searching way that the post wall will continue matching by first letter, and will show the movie with high matching degree first
3.Fixed virtual Key Layout of searching interface.
4.Fixed date no update when NFO matched films rematched to be TMDB films .
5.Fixed invalidation problem of INFO key and POP key in third layout of main interface.
6.Fixed the black line showed in the right part of the too long headline in second layout of main interface.
7.Optimized matching accuracy of post wall
8.Optimized interface display of main interface’ left pane .

Quick Setting.
1.Added play modes setting .

Local Player
1. Added chapter selection of MKV videos.

Blu-Ray Navigation
1. Optimized accuracy of Blu-Ray Navigation

HDMI IN
1.Added sustaining record function when HDMI output turned off.

RS232
1.Fixed crash problem when sending order to fast.

Model：ZIDOO_Z9S
Version：v2.2.55
Download url：http://apidl.zidoo.tv/Z9S/v2.2.55/ZI...ta-package.zip
MD5: 1C5CA4A62D99E132BB644F59E5C89461
Upgrade method：OTA

If you have installed google play kit, please reinstall it after upgrade.

Saludos.