MikroTik provides up to 30 days of great configuration support through e-mails. On the other hand, 元 and L4 can be upgraded to L6 (元, however, is currently sold in volume only). The L6 can be upgraded to ROS v.8x, though you can retain the existing license level for the rest of the device’s life. It also comes with unparalleled features and benefits: Unlike the other previous licenses, which act as wireless Internet service providers, L6 is designated as controller and has therefore a much better relationship with the other parts of the network.
MikroTik has so far come up with 6 license levels of its RouterOS, the operating system that is pre-installed in its devices such as routers, bridges, and access points.