I have only used mine a handful of times, its a good light but doesn’t meet my needs for higher brightness and more throw but it has a very low low which is very nice, and is very pocketable
I know it seems unlikely to do anything but i have had some good luck e-mailing companies with out of warranty items, several have shipped me replacements free of charge (and many more under warranty, why is everything so cheaply made today)
Also can you test the components on the driver or have you don that already?