1. It's v5 00000002, or is there some other number i should find?
2. Yes, latest official firmware (1.5.0 0.9.1 v0001.0 Build 210319 Rel.39726n), I've reset it to Factory, installed the latest FW "from file" and Factory reset again, Looks promising. Will post when it breaks.
Whatever WiFi it was, it was good. I mainly used it as a switch and rarely as AP, and my internet is max 15Mbps so it doesn't matter
I would buy anything if I had any money - but I don't - and I can't get more money, because the router decides to break, and it's not that easy to find anything combining reliability, low price and accessibility in Poland - Most devices in stores are Tp-link, Chinesium and Asus, which is relatively expensive...