Firmware 8.0

[Axel]

I find it very strange that some people have no problems with the new firmware update whilst some have had to go back to 7.1.3 or earlier to get their D to work at all.

 1. I would try using a brand new SD card or make sure that you delete everything from your existing card, download firmware 8 onto it and upgrade your D exactly as it says here: https://help.devialet.com/entries/340106...r-Devialet

2. Make a brand new configuration from scratch , which is a PITA but may be worth it. 
3. Again delete everything from your SD card or use a fresh one then load the new configuration onto it. Load this onto the D by inserting into the card slot whether the D is turned on or off. 
4. Hold down the on/off button until the amp goes into a "clean boot". Wait until the amp has reset itself, cross your fingers and give it a try. 

Hopefully, doing this might eliminate any incompatibility between the new firmware and old versions of the configuration files or vice versa.

I'm looking forward to getting my amp back from repair and giving it a go for myself!

Good luck!