I am sure that this has been raised multiple times, as I have checked many many posts here, but no matter how many suggestions I have tried, nothing works in my case.
I have a Matrix Voice, and a RPi3 Model B+, Raspbian Buster with desktop and recommended software, Version: September 2019, Release date: 2019-09-26, Kernel version: 4.19, Size: 2541 MB
I have followed precisely the instructions given here: https://matrix-io.github.io/matrix-documentation/matrix-voice/troubleshooting/
Result: Matrix device has not been detected
I would really really really appreciate some tips on recovering this.