There are no tutorials on how to downgrade twrp on kindle fire.look at my previous post its not about kfu its about your soup kit.I checked your thumbnails.it allows me to install twrp but,please I need to know how to downgrade twrp without using the command line.the last time I used the command prompt or typed a command windows gave me a bsod.but now I'm in Linux because of that,anyways,in other words,I don't wanna use a command line.just pleez read my previous post over entirely.
I did read your post, entirely.
I'm addressing the fact that you contacted the developer of the KFU, and due to your confusion about things work, gave him the impression that I said something that I clearly haven't.
The "bug" mentioned earlier in this thread has nothing at all to do with the KFU, therefore the developer of that utility is not responsible for it. That being said, the bug in TWRP that prevented you from flashing a ROM has nothing to do with the fact that you don't have system files, as you erroneously assumed.
Even with that, you as the user, assume all responsibility for anything you do to your device, not the developers of this community. This is a community of developers, for developers. This is not a community of developers, for people that don't know what they're getting into, and run into trouble as a result of it.
Now, for your problem at hand...
If you go through this thread carefully, you'll see that I have already answered your question. Go back and pay attention to what's been said and you should be fine.