Hi. I installed OPH 5.1 in my VU+UNO 4k, updated the image, I dind't so any network option than Lan. I tryed the plugin 3G/4G Modem Manager, I inserted a huawei 3G usb network witch was recognized, as I started configuring, the box restarted. (The box encountered a software problemm, it must be restarted.
I have tryed many images, such as BH, OBH, Openspa, OpenATV, Opendroid, Pli, OpenVix, Nonsolosat and Opentr, all has the same wifi issue.
In my modest opinion, wifi issue is a hardware problem, from a long, long time. Today, you find cheap set top boxes, (40-60 euros) with wifi built in, or if not, it comes with a wifi antenne in the box. Even a Octagoon mini I bought in Amazon for 25 euros, no problemm at all to connect wifi.
Wifi is crucial today, because people do not want to have cable connection around the house. Today, if anybody ask my opinion witch box to buy, I will not recomend VU boxes.
I believe, that forums like Vuplus-community, openbh.net and other should play a good roll in a discussion with VU Boxes maker.
Please, excuse my English.