[Silver Surfer]

Greetings Great & Mighty Ebook Device Wizards.
I have a Kindle Voyage that has the Kindle Cover Bug still (since it no longer receives updates from Amazon).
I also have an EOL Chromebook that I can no longer install/run Linux Calibre on.
Is there a way to manually fix the covers without Calibre?
I am only wanting to do this for future book sideloads so I am fine with fixing it one book at a time.
I have tried fooling around a little bit with editing ASIN numbers but nothing has worked so far.
Any ideas other than upgrading device/laptop?

Thanks,

SS