本次更新内容 - instead of having separate firmware packages for different sound signatures, you can now choose (in the settings file) from 4 available sound signatures that come in a single package;Midnight is now the "Warm" sound signature, while Dawn (v2.1, unreleased before) is the "Bright" sound signature. The other two sound signatures are "Neutral" (which sits somewhere between Warm and "Bright") and "WM1Z", which is the Sony NW-WM1Z sound.- in the "CFW" folder in the internal storage, where the settings file can also be found, you will now see a "StockRevert" folder, containing everything required to get back to the stock firmware;- in the same folder you will also see an "External_Tunings" folder, which contains the external tunings for the 4 sound signatures, as well as info related to the applying of these tunings (both these folders require about 246 MB available in the internal storage).Features:- 4 sound signatures in 1 package: "Neutral", "Warm", "Bright", and the "WM1Z" stock sound;- an additional settings system, which can be found in the Internal Storage (in the "CFW" folder), allowing you to set various settings (open the settings file, [settings.txt], for more info);- a boot log file for the settings system, to check if the settings file is read correctly and all the values are valid (can be found in the same "CFW" folder);- the CEW2 region doesn't apply a volume limit with this firmware;- three boot modes: "Normal", "Plus v1", and "Plus v2" (find settings for these in the settings file);- native DSD playback over the 3.5 mm output;- DSEE AI (present on DMP-Z1);- visualizations more in sync with the music;- progressive JPEG and interlaced PNG album covers are supported;