I've this Wavlink AC3000 device ( https://wavlink.com/en_us/product/WL-WN533A8.html ) which is the same as this: Win-star AC3000 ( http://www.win-star.com/eshop/goods.php?id=232 ). The "official" model would be WS-WN536A8.
Well, it is a MT7621 device with MT7615 WiFi chips. I know MT7615 are not open source some I don't care about the WiFI right now (even though they are still plugged in on the device).
So, I've compiled an OpenWrt build for MT7621 with very basic packages so I could just boot it. However, I couldn't boot it and I don't know how to debug it.
I've flash this firmware using tftp, which after some work, I got it to upload it to the hardware. But now I'm stuck. Any light and help is appreciated.