Actually there’s also third mode which is subset of Stick, instead of native NCM interface it uses legacy PPP over emulated serial port. This can be sometimes useful with older routers with USB port but you won’t be able to reach full speed in this mode.
Internet has plenty of information on how to do that. As it often is not all of that is true. Most interesting bits are also written in Russian. Despite huge improvements in translations from Google Translate it’s still bit hit and miss.
Following these instructions will also resolve Error Code 19 and “brick” with Error Code 13 (rapidly flashing green led). Which is also why some steps may seem bit pointless at first. Feel free to skip them and then start again from beginning when Mr Error #19 and Mrs. Error #13 bite you. 🙂
You’ll need Windows PC for this. I used 64-bit Windows 7 PC myself.