Then the firmware migth be missing, you can try to update the firmware using Cypress FX3 tools LimeSDR-USB User Guide - Myriad-RF Wiki
Or check if the FX3 Boot jumper actually has metal in it to make contact,
Then the firmware migth be missing, you can try to update the firmware using Cypress FX3 tools LimeSDR-USB User Guide - Myriad-RF Wiki
Or check if the FX3 Boot jumper actually has metal in it to make contact,