Hey guys, Google brought me here. I have the same problem as you guys. It started with an uncontrollable blinking. Now, the two upper LEDs of the headlamp are always on. However, the other functions are working properly: Switching it on activates the main light, switching it off deactivates it (except the 2 LEDs). Also the USB charging works. However, I would love to have this fixed, as I always have to cover the headlamp when wildcamping. Otherwise it would shine all night long. Also, it costs some valueable USB charging power.
However, what I already did, was to open the headlamp and look for signs of water/moisture. But it was all dry. From what I have read here and on other sites, I suspect the culprit is the handlebar remote switch. There may be moisture trapped in it. Did somebody made it to open this little thing?