I still do not know what MCU is in use. A similar looking MCU (similar grinding, similar white dot) is used in two Eagle Eye drivers as well:
Eagle Eye X6
Review: Eagle eye X6 UPDATED: Lumens & lux after driver mod and heat handling (scroll to nearly the bottom of post #1)
Eagle Eye X2
what kind of driver is this (from Eagle Eye X2), and can I get a bit more current out of it?
Note that djozz shows slightly different markings from what was on RaceR86’s driver. From what I can see it’s an open circle and a filled circle? (and of course also the big dimple, I’m not talking about that)