Recently Tm Unifi called uncle ask to upgrade  current router ( wifi 5) to the new wifi 6 router foc. So far uncle no issue on the speed so far happy.. so does it neccessary to upgrade?
Uncle need to know/understand what diff between old router with new wigi 6 router? Uncle google tapi tak paham... anyone can advise/explain in simple way?

how to install the own wifi 6 router to the old wifi 5? seems need TM to reconfigure if the wifi 6 units is from another different address/account?