[T-Mobile LG G5 ROMs, Kernels, Recoveries, & Other ] RealPariah:
I posted this as a reply originally. Then thought it probably should be a thread so it can help as many people as possible! Let's get the custom kernels and ROMs going for this beautiful device! :D :cool:

You will need to already have Android 20A (C should be fine as well) stock image installed, and the bootloader unlocked [Plenty of easy help via Google won't cover that here]

You can use the Recowvery Method on 20A (Nougat) (again this should be the same for 20C) with the H830. Below is the script I used with supersu and no-verity script included. Plug-in the device to your Windows machine. Install LG drivers, and remember to unlock screen and authorize the computer via the Device's screen so ADB commands can run (unnecessary tech note: you could open command prompt cd to where this is and use it's ADB to run adb devices (if you don't understand that no worries skip it)). After that just run the script and follow the menus. Answer yes when asked if you're sure you wish to continue, and done. I hope you find my work helpful :) .

I used this guy's script [Easy Recowvery ALL CREDITS TO THE AUTHOR I'M JUST SUPPLYING AN H830 SPECIFIC PACK WITH NEEDED FILES THAT I VERIFIED FULLY WORK. PLEASE GO RATE HIS THREAD AND CLICK THANKS IF THIS WORKS FOR YOU!]: http://xdaforums.com/v20/development/h918-recowvery-unlock-v20-root-shell-t3490594

DON'T FORGET

This should work granted you have the drivers installed, and Windows has finished installing them, you tapped the prompt on your device screen to allow the adb connection, and you run script as administrator, and you restart the computer if you run adb commands yourself and aren't comfortable checking task manager to kill any and all running adb instances (could also issue the stop server command too), but if unsure of any or all of that last statement, restart

Of note answer yes when it says this isn't a V20 are you sure you wish to continue?. Also, as stated in notes I had to actually run it twice for it to stick for me (I'm sure I rushed the first time or something).

I took the time to create an H830 package of the script version with the files that worked for me. Out of respect I changed nothing aside from adding the needed files and throwing quick notes in the readme.md (bottom of file) file. (PLEASE read it, if you have issues read it you missed something). You will also still need to type yes when it states this is not a V20; Do you wish to continue? <Yes>.

. I used this package to root my H830 after the Nougat OTA killed my root access so

SHOULD WORK ON ANY H830 RUNNING STOCK 20A (should work with 20C) [NOUGAT] Read the following paragraph if you skip the rest

Read the readme.md file found in root of archive (see bottom of file).

Start it up hit like 5 for TWRP and supersu (or there's another menu option for just supersu or just TWRP whatever you desire).

Answer yes to the prompt to continue.

Now wait for the magic (again not mine this is the authors work)).

Once done you can download a reboot to recovery app or widget (or root checker) and verify that you're good to go.

If it doesn't take the first time you may need to run it again. DON'T FREAK OUT, RUN SCRIPT AGAIN IT CAN TAKE MULTIPLE RUNS.

Don't forget to install BusyBox (Stericson installer recommended and I use /su/bin personally (/su/xbin should also be fine) Since we're talking stock here generally I like to minimize any changes to /system if it can be helped personally; so I haven't tried running BusyBox from any /system mount) as this is a stock ROM.

Kernel Adiutor works and yes I recommend leaving thermald enabled as your thermal governor unless you flash a custom kernel (not included)

Manual Boot to Recovery:

Start With phone off (pinch battery button and re-insert battery if you can't otherwise shut it down or are lazy like me ;) )

Hold both Power AND Volume Down at same time

1-2 seconds in to seeing LG Logo release and hold power button while continuing to hold volume down the entire time...

Release once you see white screen prompting yes or no to wipe user data (don't freak) ¹

use volume key to highlight yes

Hit Power key (think enter)

¹(If you have factory recovery this WILL format all user data and settings you've been warned. Only way to boot to stock recovery is to use app, widget, or terminal/adb command (reboot recovery). I don't know of any manual physical button methods to access stock recovery directly.).

You should now see TWRP Loading and can release any keys if you're holding any down still (once white wipe screen is seen you should release the keys)

Sweet, the file is small enough to be attached to this post directly, Enjoy! Also it's a 7-zip archive. It's available for every OS. For Android if you use ES File Explorer the first time you try to use a 7z file it'll offer to download plug-in, and you're good to read/write 7z archives (best compression almost always imho).