I recently installed an 8550W, and had a minor issue with the programming stage. I'd like to post my experience, for anyone else that has this problem.
I got to the part where a web browser is used; it says to enter setup.myqdevice.com and follow the on-screen prompts. At some point, the browser displayed only a blank white screen. After retrying the process a few times, I figured it out. When I got the blank screen, I used the back function (go back a page) -- and it displayed the expected information.
This is on Android using Firefox.
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