Kindle kfx DRM 2019(Kindle for PC/MAC 1.25)

The books downloaded via Kindle for PC/MAC are with a new type of kindle KFX DRM. For this new kindle kfx drm, there is not any software on the market can handle it for now. Epubor software has offered an alternative solution to remove this new kindle kfx drm.
1. Deregister Kindle for PC/MAC, uninstall the Kindle for PC/mac 1.25.
2.Then reinstall the older version of Kindle for PC(http://download.epubor.com/sold/KindleForPC-installer-1.24.51068.exe) and kindle for pc(http://download.epubor.com/sold/KindleForMac-1.23.50131.dmg)
3. Register this older version of Kindle for pc/mac, and then re-download your Kindle books.
4. Run epubor software to remove the DRM again. The new Kindle kfx drm will be removed.
NOTE: Please uncheck the "automatically" update options to stop the kindle update.

For more detailed information, please read this guide: https://www.epubor.com/kindle-kfx-drm-remove-failed-and-solution.html#meth6

I cannot install the older version: it stalls.

please help!

None of the alternatives work for me.Kindle reader  for chrome will not allow download.
Even if that worked, I am required to buy other software. Kindle reader for SAfary will download n=book but your software will not ind it a it only works with Chrome.

I do not have a kindle registered on my name so, I cannot download vis USB.

Looks like who bought Ultimate, your premium product got screwed