Aspheric or Convex lens for Convoy S or Jaxman?

[d_t_a]

I posted some pictures of the Convoy BD04 here:

how to change driver of Convoy BD04?

I recently received my order of Convoy BD04 flashlight, which supposedly comes with the "new" firmware (supposed to imply Biscotti firmware). But the actual I got from Simon's Convoy AliExpress store is still the old firmware (Low-Med-High-Strobe-SoS). I have contacted Simon and he says maybe mine is just very difficult to go to Config Mode (my Desert Sand has the too fast timing, which made it quite difficult to change modes). But this BD04 definitely does not appear to have a Config Mode,…

(although I didn’t take a picture of the battery carrier portion of the tube in that message thread)