The driver in this light looks to be the same as in the uniquefire UF-X6S, and its several siblings.
Here is a close up:
I never tried to mod it. It gave it away in a giveaway.. These days I always see what can be done with stock drivers before changing them.
So, we have two (sense?) resistors. R200 and R270. Im guessing they are in parallel. Adding more resistors will probably equal higher current. :) ^^
(if not poof, sorry Garry, I did warn you on the 3-18V driver 0:) )
We also have 2 of those brown thingies (aka capacitators). Putting a low value resistor on top of one of those normally fixes next mode memory. (330K or lower will probably do) Anyone know which one??
I also see a resistor/bridge marked "0". Could it possibly be like some various others drivers and transform the light into a 3 mode if its not there/bridged?