bumpy, I used fuse 104 for always on power and 63 for ACC/key on. The fuse box may not be exactly the same between X1 and X2, but this other thread may be helpful:
https://f48.bimmerpost.com/forums/sh...=dash+cam+fuse
It seems like reaching fuse 104/105 is more involved in both models. I had to remove the glove box and lower trim, and dropped the knee airbag to gain access to fuse 104. It wasn't difficult, but does make the install more involved.
Unfortunately I can't confirm whether any of the smaller, more easily accessible fuses are always on. If you have knowledge of how to use a multimeter and patience, testing each one that you can access through the glove box access panel may be an option.