[Fire TV Q&A, Help & Troubleshooting] Y314K:
Not exactly. The file needs to end in .md5 instead of .txt. Although it is a .txt file.

http://www.aftvnews.com/how-to-use-twrps-built-in-md5-file-integrity-checker-to-avoid-bricking/

I usually use the Method 1 in that Guide. But it's as simple as creating a .txt file that matches the PreRooted ROM's file name including .zip & has the Hash value inside of it (I just add the hash value : "64451a8f88cb5a3fff53f14c80ba2267") although other guides or programs like to add the file name in there too. But it is not needed. I will uploaded my 2 MD5 files for reference (It includes the current latest PreRooted ROM & also the last XPosed Framework Hash file too). But learn how to create them for future updates. Very simple file to create.

So my two File names are:

bueller-5.2.1.2-rooted_r1.zip

xposed-v87-sdk22-arm.zip

My MD5 hash file names are:

bueller-5.2.1.2-rooted_r1.zip.md5

xposed-v87-sdk22-arm.zip.md5

You probably will need to uncheck "Hide extensions for known file types" in Folder Options/View on a PC to be able to name the .md5 file correctly. Not sure on a Mac.

This is the PC Hash Program I use to take a look or verify or copy Hash values. Specially when the file poster does not include a Hash value & I have to create/check on my own: http://implbits.com/products/hashtab/

Yes, If you do the recommended wipe of Dalvik, Cache, Data & Internal Storage. That is a Factory Reset. If you want to keep your programs or setup mostly intact. Then only wipe Dalvik & Cache. Leave the other two unchecked. When installing the previous ROM's you did not wipe anything. Since we where waiting to have TRWP working to do it within TWRP instead of CWM or the stoc Factory Reset option.

It is up to you. You can always do the TWRP Factory Reset in the future if you run into any problems. I think you will need to reinstall the XPosed Framework. But that is because it is part of /System & that does get changes when flashing any PreRooted ROM. Also, by this time your BusyBox & XPosed FrameWork & XPosed Manager App are probably all out of date. So would be good to get the latest of those install regardless of which option you choose to wipe. But you can wait to do that in the future when you have more time.

Yes...

For Fire OS 5 (version 5.0.0 and up), run the command:

pm disable com.amazon.device.software.ota

But don't forget that once on FireOS 5. You have to first type in:

su

For ADB Root access. Both Method 1 & Method 5 are recommended. Both methods block from different angles. So combining both methods are the safest option.

I think you will need to update SupserSU. I think you will probably see a nag in Notifications telling you SuperSU needs an update. You have the links on how to do that. But it is not a must do now thing. You can wait until you have more time. The only thing that not updating SuperSU might cause problems on. Is if you are trying to use the Root option in apps like ES File Explorer or Total Commander. Which means that you will have to delay doing the ES File Explorer version of Method 5. But TWRP & Method 1 are already protecting you while you get the time to mess with this other stuff.

Even after your done. If you still have any ?'s don't hesitate to ask.