26-Oct-2025, 18:39
This issue often occurs with Devialet 440 Pro dual-mono systems after a firmware update or new configuration upload, especially when moving to version 13.2.0 (Sweet Room).
In your case:
• Your Master (220 Pro) successfully installed the new 13.2.0 firmware.
• Your Companion either still runs an older firmware version or the update failed (the “failure with SD card” message).
• Because both units now run different firmware versions, they can no longer communicate properly.
In short:
The Companion refuses to load the configuration because it’s on a different or corrupted firmware version.
⸻
Step-by-step solution
1. Prepare two identical SD cards.
• Use cards of max. 32 GB, formatted FAT32.
• Download the latest 13.2.0 firmware from Devialet’s website.
• Copy all firmware files (not just the configuration) onto both cards.
2. Install the firmware on each unit separately.
• Insert one card into the Master, power up, and let it fully install the firmware.
• Then repeat this step with the Companion, using the second card.
• This ensures both units have exactly the same firmware version.
3. Then create and load the configuration.
• In the Devialet Configurator, build a dual-mono setup (Master + Companion).
• Download the generated ZIP file.
• Copy the configuration file only to the Master’s SD card.
• Insert that card in the Master and start both units with the Devialet-Link cable connected.
4. Check the Companion’s display.
• If everything worked, the display should now show “Companion”, not “Factory Config” or “S1 CONFIG”.
• Volume and inputs should now follow the Master again.
In your case:
• Your Master (220 Pro) successfully installed the new 13.2.0 firmware.
• Your Companion either still runs an older firmware version or the update failed (the “failure with SD card” message).
• Because both units now run different firmware versions, they can no longer communicate properly.
In short:
The Companion refuses to load the configuration because it’s on a different or corrupted firmware version.
⸻
Step-by-step solution
1. Prepare two identical SD cards.
• Use cards of max. 32 GB, formatted FAT32.
• Download the latest 13.2.0 firmware from Devialet’s website.
• Copy all firmware files (not just the configuration) onto both cards.
2. Install the firmware on each unit separately.
• Insert one card into the Master, power up, and let it fully install the firmware.
• Then repeat this step with the Companion, using the second card.
• This ensures both units have exactly the same firmware version.
3. Then create and load the configuration.
• In the Devialet Configurator, build a dual-mono setup (Master + Companion).
• Download the generated ZIP file.
• Copy the configuration file only to the Master’s SD card.
• Insert that card in the Master and start both units with the Devialet-Link cable connected.
4. Check the Companion’s display.
• If everything worked, the display should now show “Companion”, not “Factory Config” or “S1 CONFIG”.
• Volume and inputs should now follow the Master again.
