If you choose to remain on v6.48.6, ensure you follow standard MikroTik security hardening principles:

After your router reboots, verify that the installation was successful: Connect via WinBox.

Maintains legacy behavior for routing protocols, scripting, and firewall rules without breaking configurations. Official MikroTik Download Links

: Expanded U-NII-2 support for US and Canada profiles specifically for the cAP ac XL and QRT 5 ac models.