Correct. Simply remove the driver’s screws and gently flip the board over.
Start here at Hoop’s how-to. This offers an overview of the flashing process and the hardware needed.
Hoop’s thread has more links at the top of the OP, including this page at the Flashlight Wiki.
The first Link in TK’s signature is also recommended reading material.
I just got started with reflashing lights. Expect some trial-and-error with getting your hardware working properly. The rest is pretty easy!