Thank you
So I tried the way to reset that is wrote on the Anduril diagram on the webpage of D4V2. It didn’t work but I tried tightening the tailcap and getting out of all Anduril’s modes one by one. I managed to get back to normal mode and now it seems to be working.
Then I tried your solution to reset, so I unscrewed, held the button and screwed and and it seems reset, so it’s perfect !
I do have a problem of false contact if I use a flat-top battery as well as other times a bit randomly because I screw it back on. It’s a bit of a shame, I had read in this test ( Review: Noctigon KR4 (18650, 4xE21A 5000K, CRI96) ) that you could use both types… But I’m glad I managed to get it to work and I’m having fun with it.