Cant seem to install screensavers hack

I'm VERY new to this, I have jailbroken my paperwhite 6th gen on 5.12.2.2 and have installed KUAL. My goal is to use online screensavers and make it so I can view my home assistant dashboard on my kindle. When I put the Update_linkss_0.25.N_install_pw2_and_up.bin in the root and go to update I cant and when I reconnect my kindle to my pc the file has disappeared?

Please help

(make it easy for me to understand)

Thanks!