You need to upgrade sequentially, I have done this since 2.0.4 without pressing the reset button, doing what is called a dirty flash. You can update from within the TV box, I have done it after I flashed custom 2.0.4. When pcristi will have the custom 2.0.6 , I will do the same.
Edit: we have a patch to 2.0.6 https://forum.softpedia.com/topic/1056055-himedia-q5q10pro-android-511android-70-box-tv/page__st__774#entry21904623. It is not the full CFW, as pcristi informed me. We should get all the new features with this new patch.