Would you explain?
Google translate of that whole thread did not make anything jump out at me, and for the first video, speech to text followed by translation of the text gave nothing understandable.
If you discovered that you must unplug CC3D from USB, press UpgradeAndErase (or Rescue or Upgrade), THEN plug CC3D into USB, that is covered in the wiki instructions but could use a bit more information "Unplug power (that includes unplugging USB)".