because it's all crash wAP ac!
my wAP ac have original version 6.42.x I guess, it runs very well, very stable.
then I upgrade it to 6.43.x , the 5G wireless get a little unstable, just break links for a very short time especially for initial connection. I don't mind it but my wife complain it many times, so I continue upgrade to 6.44.3, till now I found everything goes mess. 5G wifi always break, the router always reboot! the temperature in System Heath shows 53-55C. it's not a power supply issue, I have checked it.
today, I downgrade to 6.43.14 (Long-term), I found the situation is much better. System Heath shows 52-54C and the 5G wifi much more stable than 6.44.3 (stable), three Tx/Rx chains all enabled.
but this version still have bugs, the initial 5G connection is not stable, when you connect it first time, it will break soon, and then connect again, and then looks stable! the situation looks like my first upgrade.
I miss 6.42.x very much now, where can I download it? thank you.