If you have not jailbroken your kindle then your kindle needs to upgrade/downgade to this version:
kindle voyage: 5.5.0
kindle paperwhite 2: 5.4.3.2
kindle oasis 1 :5.7.4
kindle paperwhite 3 : 5.7.4
kindle 8 2016: 5.6.0
kindle basic (2016) : 5.8.0
then download main-htmlviewer.tar.gz from this link:
http://kdroid.org/firmtest/droid/dro...%E6%9C%BA.html
put it into your kindle and search :installHtml
your kindle should reboot and get stuck in the loading phase. Or it should have a blank screen.
you can now connnect your kindle to your PC and use the fastdownload steps mentioned above.