[Verizon Motorola Droid Turbo General] TheSt33v:
Small update to build SU4TL-49. Not Marshmallow. Claims "security patches and improved network performance."

How to Update with an Unlocked Bootloader

The update will only work if you have a 100% unmodified stock rom and recovery menu. If you're on CF's rom and you want to update to the latest version of that, see his page for details on how to do that.

1. Backup all data. Just in case. Definitely do this if you're coming from CM13 or RR. I don't remember if the OTA wipes your data or not.

2. Download this SU4TL-44 100% stock flashable zip here: http://xdaforums.com/droid-turbo/development/rom-su4tl-44-100-stock-t3320815

3. Download the SU4TL-44 stock recovery menu here: https://mega.nz/#!L1AkQD4T!qoZIlLa-wuUBLMEi_gE574meiHd6Pehb34a-x3Gb-V8

4. Boot into TWRP.

5. Flash the file you downloaded in step 2 by selecting Install and browsing to the file.

6. In TWRP, select Install, followed by install image, and select the recovery image that you downloaded in step 3. Tell it to flash it to recovery, and flash it.

7. If you're coming from CM13 or RR, do a factory reset in TWRP. If you're coming from a modified stock rom, I still recommend this, but it's not mandatory.

8. Reboot to recovery to confirm that you see the stock recovery menu (a dead android with the words "no command").

9. Boot the phone normally.

10. The OTA update should appear. Take it and let it do its thing.

You now have a 100% stock, bootloader still unlocked, SU4TL-49 phone. If you want TWRP back so you can start flashing stuff again, keep reading.

11. Download and install Sunshine from here: http://theroot.ninja/

12. Download your preferred version of TWRP. The current stable version is here: https://dl.twrp.me/quark/. If you want baybutcher27's modded version that includes lots of handy additional features, you can get that here: http://xdaforums.com/showpost.php?p=66877208&postcount=116

13. Download Flashify from the play store.

14. Open Sunshine and follow the instructions until it gains temp root. Disregard the message that says it isn't compatible with SU4TL-49.

15. Open Flashify, select Recovery Image, then browse to the version of TWRP that you downloaded in step 11. Flash it.

16. Reboot to recovery. You should see TWRP's lovely smiling face staring back at you.

How to Install the SU4TL-49 Modem Only

1. [HIGHLY RECOMMENDED] Flash the modded TWRP I mentioned earlier, select backup, backup only your modem.

2. Flash Computerfreek274's modem package that you can get here: https://www.androidfilehost.com/?fid=24545070682210570

3. If you have GPS or other modem-related issues, try flashing this to fix them: https://www.androidfilehost.com/?fid=24531035584725320

4. If you decide you don't like the new modem, restore the backup you made in step 1.

Troubleshooting

Issue: You followed all of the steps, but you still get an error when you try to take the OTA.

Solution: Backup your data and perform a factory reset using the stock recovery menu. You can do this by rebooting to recovery like you do when you want to boot TWRP, and when you see the "no command" screen, hold the power button and press volume up. Then select factory reset and do it.