XDP-30R : 1.30/18627AEP
For European model, download a firmware from here.
Added support for aptX HD.
Changed volume curve for bluetooth.
Added support for ReplayGain.
Support to display song information in case of the song has no metadata
Added ''volume / side key setting'' while display-off.
Added ''sort setting'' in categorized list of Library.
Minor bug fixes and improvements stability.
More detail for above functions, please refer to the instruction manual.
Depending on the Firmware version, update will be needed 2 times.
[1.21/18223AEP] As of 7 March 2018
Changed Short cut button for Hi-bit 32 and Upsampling on home screen
Added actual volume values to volume limiter setting
Disable screen turning on from volume knob operation during HOLD setting
Re-sort compilation albums as “V.A.” (Various Artists)
Improved automatic switching when connected to USB DAC devices
Security function improvements
Overall stability improvements
For detail about Open Source Software, please refer to the link below.