[TUTORIAL][Tethering]+[Android Pay] How to have your Nougat, and eat it too!

Obviously I'm not responsible for your mom exploding or your phone disowning you, but.....

I got tethering and Android Pay working on stock Nougat - that's Android N, folks - on a Nexus.
(confirmed will work on Marshmallow and up on 5, 5x, 6, 6p...etc.)
Thanks to @Chainfire, @ManHands and @interloper, and you!

click thanks if this helps, or buy me a beer or something.

prerequisites:
working fastboot (from platform-tools in the Android SDK if you don't know where to find it)
twrp .img for your device
latest stable systemless supersu

1. be on Marshmallow or Nougat obviously
2. flash twrp

(volume down + power on nexus gets you into bootloader, then after flashing recovery, use volume buttons to scroll and power button to select recovery mode)

3. flash systemless root while booted into twrp (unsure if .supersu SYSTEMLESS=true in /data is still needed, but can't hurt - mine is still there from earlier.)
4. while still in twrp, go to mount and check system. Make sure you allow changes.
5. from your computer, do this

Code:

---

adb shell
echo "net.tethering.noprovisioning=true" >> /system/build.prop

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6. reboot into Android.
7. Install Terminal Emulator from the Play Store.
8. Launch it, and in Terminal Emulator, do this

Code:

---

su
settings put global tether_dun_required 0
exit

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9. go into Supersu, expert, scroll to the bottom and hit full unroot. No, you don't want it to patch you back to the stock boot image or recovery*. If it hangs, just reboot and try doing it again.
10. ????
11. Profit! You should have tethering unlocked, be unrooted, and have full Android Pay goodness working.

To take an OTA, do this, because Flashfire gets confused after you've done build.prop edits -

1. go to About Phone, scroll down. Find your build number.
2. download that Nexus Factory Image.
3. Unzip it all. ALL OF IT.
4. Make sure you have Android SDK & platform-tools (or just a working Fastboot and ADB)
5. just flash boot, system, and recovery - you can now OTA with no problems. Then repeat the above guide on your new OTA. Confirmed working 10 minutes ago, OTA'ing from Marshmallow to Nougat and then getting tethering working again

ALTERNATE IF YOU PREFER FLASHFIRE:

All the above steps, but you only have to flash the System image to fix the build.prop hash fail then flashfire should work for you. Wouldn't necessarily recommend upgrading version numbers (6.0.1 to 7.0.0) with Flashfire, but who knows, it might work great! Chainfire is a wizard.

*you can do this if you want, but when I let it patch my boot image I got the dreaded "device corrupt!!!!1" message at boot. Did not try letting it flash stock recovery image.

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