@Joseph-TP. does this router have MU-MIMO because i don't see it and im not using smart connect

@Joseph-TP i will try these but i want to know if i should upgrade to firmware 1.7.1 or not because many people complain about it or wait for upcoming firmware and when it will be released ?

I've got a TP-Link AX53 V1 with firmware 1.6.2 (260119) and I'm wondering if it's safe to upgrade to 1.7.1. I've seen a lot of complaints about that firmware, so I'm curious if anyone here has...

What is the best version should i use ? i see that previous to V1.7.1 there is Archer AX53(EU)_V1_260119 is this one good or not