23425 
 
 
AVR10/AVR20/AVR30/AV40 Software Release Notes 
 
– 5 – 
Arcam, The West Wing, Stirling House, Waterbeach, CB25 9PB, UK  
 
 
Host Version 1v34/09 
LCD/IAP 0.74/0.04 
DSP1 02.03 / 01.35 
DSP2 00.01 / 00.17 
DTS/IMAX 3.90.50.1/390.508.2.0 
OSD 0.03 
DAB 303 / 561 
NET 0.100.608 
BT 0.7 (or higher, depending on build) 
 
Fix list: 
IMS21658: Change Auro-Matic strength to slider bar (from drop-down list). 
IMS21764: Height Centre & Surround channels operation in MCH Stereo mode improved. 
IMS21717: Possible for web GUI and front panel menu both to be open. 
IMS21739: Dirac filters can fail to be applied for MQA input stream. 
IMS21742: Allow ARC power / audio control to be selected even if eARC control is not used. 
IMS21759: High Fs audio streams + Auro + Dirac can give audio artefacts. 
IMS21766: Sometimes audio can be lost on mode change or applying Dirac filter. 
IMS21782: 4.0 setup reported 2 extra speakers to Dirac Calibration tool with no name. 
IMS21784: AVR loses audio if there is a break in the audio stream (source-specific). 
IMS21786: Inhibit changes to speaker crossovers when Dirac is on (Dirac is managing the speaker crossovers). 
IMS21789: If input is already playing when AVR is powered up, vol up/down can be required to start audio. 
IMS21794: Menu > Speaker Levels > Centre should be Center when region is US. 
IMS21796: RS232/IP: Did not send unsolicited message when Dirac filter changed (0x37). 
IMS21797: Interlaced video resolutions incorrectly reported. 
IMS21800: Add front panel warning on power on that OTA update is available (effective after this host update). 
IMS21803: Center Height typo when reported to the Dirac Calibration Tool. 
IMS21807: Audio artefact on 2.1 system with Dolby Surround applied and Atmos input stream. 
IMS21813: Add front panel warning that update will erase all settings (effective after this host update). 
IMS21854: Unable to open Web Setup navigation when on mobile from the AVR Control page