By holding in the Bluetooth button and powering the printer on, the printer will enter Mass Storage Mode, as indicated by a solid green Power Lightand Status Light and an off Bluetooth Light.
By holding in the Feed Paper and Bluetooth buttons at the same time and Turning the printer on, it will enter Boot Mode, indicated by a solid green Status Light. By powering the printer down, it should clear any status settings. This was used to resolve an issue where the Power Light was flashing green, and the Status Light flashing red.
Enable Bluetooth Auto reconnect on RJ-4230 - Menu > Bluetooth Scroll down and make sure Auto Reconnect is on