The crossfire micro receiver must have encountered some problems flashing the firmware. It is now in a bootloader mode. 

To get it out, you will need either a TBS CORE PRO or a TBS FPVision product. Connect the Crossfire micro receiver to it via the BST port and then run an update via the TBS Agent for the CORE PRO / FPVision. Towards the end of the update it should detect a connected crossfire micro and attempt to revive it by flashing a old firmware to it.

Once that step is done, you can re-bind the Crossfire Micro receiver and re-run the firmware update