How do I fix a solid red light on my trainer?

A solid red light on the LED indicator generally indicates the device is in what’s called a “bootloader state.”  This is a state where the trainer will not be responsive or able to be detected by virtual software.  A remedy for this is available through the Saris Utility app for iOS and Android.  Download the app from your respective app store - once installed, select UPDATE FIRMWARE.  This will initiate a Bluetooth scan (make sure Bluetooth is enabled on the device), and “ Saris_Boot_xxxx_xxxx” should show up on the list of Devices.  Select this listing, and that will begin a firmware update.  This update will essentially overwrite the existing faulty software on the trainer, ultimately instating a proper and fully functional software version.  This will restore the trainer to a working state.