I'm having trouble side-loading to this version of Fire OS
 

I'm using a Kindle Fire, device model Fire 5th generation with serial number GOKO H404 5477 10LT

I'm having trouble loading data by USB.

Help

Look at one of the scores of howto's for a custom ROM on a kindle

https://www.thepolyglotdeveloper.com...n-kindle-fire/
https://m.youtube.com/watch?v=vahTKHs0A5E
https://forum.xda-developers.com/t/h...-fire.1414626/

Thanks, I'll try this as soon as I can get my Internet connection fixed.

Some of those get difficult if you have already updated Fire OS.

Guys, the original poster mentioned sideloading, which is installing an apk obtained outside the amazon store. It does not require replacing FireOS with custom OS (although installing lineage on my kids Fire HD8 was a significant improvement so I'm all for that too).

Pendeb, what exactly are you trying to do and what goes wrong when you try to do it?

All versions of FireOS support side-loading. Updates don't matter.