UR28M Problem with macOS Sequoia 15.5

Steinberg Hardware UR Series
1

I was using macOS Sequoia 15.5 on my 2019 MacBook Pro.

2.9 GHz 6-Core Intel Core i9__Radeon Pro Vega 20 4 GB Intel UHD Graphics 630 1536 MB__32 GB 2400 MHz DDR4

and my Steinberg UR28M Sound card was working perfectly.

Then I upgraded to macOS Sequoia 15.7 RC 2: Released August 11, 2025.

Now nothing from Steinberg works. Neither Yamaha Steinberg USB Driver V3.1.7 nor TOOLS for UR28M V2.3.0.

So the macOS is not recognizing the UR28M.

What should I do?

Unfortunately there is no Time Machine setup on my MacBook Pro Laptop.

Please advice.

2

Similar issue, it was working perfectly and suddenly the system is no more recognizing the sound card UR28M. I am in sequoia 15.6

there is something about system extensions to rebuild.

please advices welcome!! SOS!!