We have had now 3 instances where the enabling, or just the update to, v.6.18 and wireless-fp renders the MT-radio card in a rb411 board not functioning.
Just to enable the normal package and disable the wireless-fp makes radio to connect to assigned AP again.
Tried this several times and the issue can be repeated. rb411 with R52H is not working with wireless-fp but does work with wireless (v.6.18)

Card is in encrypted NV2 mode working n-only. Config stays in place but the wireless-fp package just doesn't allow the card to connect. Scan does 'see' the AP so receipt is ok. Just setting package back to normal wireless package and all config 100% same makes the card connect again....

Made supout.rif to MT.

The devil plays with it. Just done an upgrade on another rb411 that was easy to replace in case off.... updated fine. Can switch between packages and both work?
Config is almost the same (mac and IP differ...) and hardware is exactly the same. Same board, same radio.... weird..... no prob....

I am using wireless-fp on 3 411AH, 2 411U, one 411 and one 411A from version 6.13 now is updated to 6.18 no problem at all in older version have some time reboot because of kernel failure but after I thing 6.16 that bug is resolved. Card is R52n, R52nM and Compex WLM54G.