Question : I have a Net Metal 921ac you update your device to 6.21v encounter a problem . Are been hidden Wireless .uadm emergence Wireless waln in settings ?? What is the problem. ? And what is the solution ? Please help this big problem

you need to download separate wireless-fp package (aka CAPsMAN) and replace existing wireless.npk (or disable and enable wireless-fp)

How possible, please download the package Fp. Possible solution please please

What replaced ? I do not understand you?

http://download2.mikrotik.com/routeros/ ... mipsbe.npk

copy to files. Enable wireless-fp then disable wireless. And reboot...