[AT&T Samsung Galaxy Note5] Delgoth:
I've gone through all the messages I can find going back to December. I will post Everything I know about the v4 Bootloader & what I've seen accomplished. These instructions were made by going over conversations with [MENTION=3962799]lownslow200sx[/MENTION]. He got ahold of me about Binary 4 builds, and was totally willing to try out everything, and then report back his results even though he didn't have to.

According to the screenshots I have, this test should totally work. Resulting in a Rooted 5.1.1 Device with an unlocked GSM modem. Big, BIG thanks to [MENTION=371913]gmlai[/MENTION] for helping to reproduce the root method. This wouldn't be possible without those two right now. Provided the results can be replicated reliably by others, this method shines some light on what exactly is locked down, and how, on the N920A. However those implications are left for another day's research.

Again I don't have the device anymore, but it has been reported to work.

You will want to grab the following Items before you proceed to start:

1.) COMBINATION_FA51_N920AUCU4APL1

2.) ADB Drivers (Not needed if you have them already.)

3.) [MENTION=1380660]iB4STiD[/MENTION]'s Rapture ROM for the N920T/W8.

4.) Wondershare MobileGo (To Root & Use FlashFire)

5.) Official + PrinceComsey's ODIN (This zip contains both versions.)

5A.) You can also useODIN 3.12.5 Only

*EDIT: 6.) SuperSu from the playstore

OPTIONAL (for insights): Android Internals - A Confectioner's Cookbook

Read all of the steps completely before starting the process. This is to ensure that you will either, have all the required files on your PC, or have wifi access during the test.

Having no external SDCard in the device, pretty much means you always have to have everything you want to use staged on your PC/Cloud because of data wipes.

Test #2

Testing: Flashing ROM from N920T Rapture 5.1.1 ROM by iB4STiD.

Step 1.) Refer to Test #1 from start to finish to ensure you have a fresh install of the 4APL1 Factory Binary.

Step 2.) TURN ON, "USB Debugging" + "OEM Unlock"

Step 3.) TURN OFF, "Verify Apps via USB" if possible.

*EDIT: 4.) Install SuperSu from the playstore

Step 5.) Install CF's "FlashFire" app. Either from the play store or a backup you have on your PC.

Step 5.) Root the Device using Wondershare MobileGo so that FlashFire becomes usable.

Credit to [MENTION=3962799]lownslow200sx[/MENTION] for finding this rooting app.

Step 6.) Here is where it starts getting tricky. Open FlashFire and backup your boot.img (4APL1).

Backing up everything you can and offloading it to your PC for a rainy day isn't a bad idea here either.

Step 7.) Flash the whole Rapture ROM zip using FlashFire.

Step 8.) Restore the backup of the 4APL1 boot.img you made in Step 6.

Step 9.) Report the results of Steps 1-8

My first thought here would be to queue up all 3 actions in Flashfire and then start so it all happens at once. Right now I'm still thinking about the order of operations there, but that is my first thought. If the device does not boot up doing all 3 actions at once, we will either create a flashfire package specifically for this step, or just find another order of events.

#END OF TEST #2

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Should you get it to work and remain rooted. Here the appropriate files for installing the Xposed Framework:

xposed-v86.0-sdk22-arm-custom-build-by-wanam-20160709

xposed-uninstaller-20160211

I never really messed with these on my Note5. I did get it to work one time on my Verizon S6 Edge. I eventually bricked that bootloader by messing with partition tables. But I suppose that the Xposed Framework would be the next item on the agenda after Binary 4 Root.

I've attached what screenshots I do have of Binary 4 being rooted with this flashfire method. I'm also attaching some other tools that helped me originally on the v3 Bootloader. Once rooted, these tools can come in Very Handy for testing your 5.1.1 device. Or I was, but every time I try to attached another file the "manage attachments" window won't do anything.