23425 
 
 
AVR10/AVR20/AVR30/AV40 Software Release Notes 
 
– 9 – 
Arcam, The West Wing, Stirling House, Waterbeach, CB25 9PB, UK  
 
Host Version 1v22/09 
LCD/IAP 0.55/0.04 
DSP1 02.03 / 01.23 
DSP2 00.01 / 00.17 
DTS 3.90.50.1 
OSD 0.03 
DAB 303 / 561 
NET 0.100.472 
BT 0.7 (or higher, depending on build) 
 
Fix list: 
IMS21086: Input Config > MCH mode operation improved. 
IMS21087: Input Config > Mode operation improved. 
IMS21121: Audio lost with analogue & DTS Virtual:X. 
IMS21216: Roon Tidal MQA higher Fs tracks could be distorted. 
IMS21350: Prevent turn off audio artefacts on low mains for processor model. 
IMS21370: Speakers grouped in a single group within the Dirac calibration tool. 
IMS21507: Headphone downmix operation improved. 
IMS21509: CH13-16 test tones in Dirac Calibration tool incorrectly mapped for wide speakers. 
IMS21513: DAB/FM/NET inputs could fail to give audio in zone2 in some setups. 
IMS21523: Startup behaviour modified to allow DSP/net boot time. 
IMS21527: Dirac calibration tool test tones not correctly mapped for ch13-16 wides/heights. 
IMS21532: RS232/IP power state not sent when powering off with RC5 toggle command. 
IMS21542: Add HDR10, HDR10+, HLG & Dolby Vision indicators to video resolution menu item.