KT = Kindle Touch =/= Kindle Paperwhite
= those files are not for you Kindle device. Nor did first Paperwhite ever use firmware 5.0.0 (that was factory firmware build on Kindle Touch).
And you should definitely use some more recent debricking instructions that are applicable to Paperwhite.
Like :
https://gist.github.com/TobiasWooldr...omment-3435765
https://pastebin.com/ZD1CiAkm