@ip_gr
I think you are more or less desparate to use USB WiFi and therefore keep pushing your argument as you are probably not willing to leave OpenPli... I concur with Eric that OpenPli can't be forced into applying new driver just because you desperately want to! Their statement is clear! As of 2013 the DMM boxes are no longer actively supported and it is purely out of their good spirit to keep on building for as long as possible.. You should be grateful for that alone! New drivers will not be incorporated (even before the official shutdown) since DMM has left the Open Source platform...
So again: Tough luck! The DMM boxes are becoming obsolete by themselves so stop whining and get yourself a brand new STB that is officially supported by OpenPli. You will have full support again, newer kernels and drivers that MIGHT solve your USB WiFi problem... As said: USB WiFI support for any Linux STB is never 100% the same as on PC's or laptops/tablets...