sixaxis controller : model CECHZC2E-A will connect, but model CECHZC2E-B1 won't

[vichug]

Hello, i'm strying to connect several sixaxis on a steamdeck (so it's steamOS) and have installed bluez and bluez-plugins through pacman as suggested by wq13 here : https://www.reddit.com/r/SteamDeck/comments/uz0me4/comment/icq148h/?utm_source=reddit&utm_medium=web2x&context=3
CECHZC2E-B1 was apparently destinated for middle east and north africa market while CECHZC2E-A was for Europe, might that be the source of problem ? Maybe my CECHZC2E-B1 are fake, how can i check that ? could this be related to #120 (comment) ?