The internal pre-amp firmware flag is corrupted (rare). Fix: This requires rolling back to driver v3.8, toggling the phono/line switch in software, then updating back to v3.9.2.
If the device isn't recognized, check your under "Sound, Video & Game Controllers" to see if it appears with a warning icon. ⚠️ Troubleshooting Tips rane sl3 drivers
"Drivers installed successfully. Please restart." The internal pre-amp firmware flag is corrupted (rare)