i have updated luma 3ds with starupdater (luma version dev and installmode menuhax)
now i have luma v6.2.2
latest is v6.2.1 -f5039dca (why is my version highe4r ?)
updater version is 1.4.1
after that, i put the firmware.bin to the luma folder in the root, then i launch luma3ds and installed...