First post here. I have SU4TL-49 and 23.21.49.quark_verizon.verizon.en.US.vzw. Everytime I try to use sunshine, it does the temp root successfully but when it tries unlocking, it says "Sunshine only supports the Droid Turbo on the SU4TL-44 and SU4TL-49 firmwares. Your device is currently on an incompatbile firmware". This obviously doesn't make sense since I got SU4TL-49. So now I am stuck trying to figure out what to do. I made sure to download the latest sunshine version too but it still didn't work.
I should mention I tried the Firmware change method in the OP before installing sunshine. The flashing goes OK but when the phone boots up, the Firmware is still SU4TL-49. I have no idea what is going wrong here and no clue how to fix it.
I already replied to a similar question of yours in another thread. I do not know why initially Sunshine didn't work for you on SUTL-49... But your problem right now (probably) is you tried to downgrade "49" to "44". The OP was written (January 2016) before "49" came out (May 2016) and
@TheSt33v revised it to also include "49" -- specifically saying if you have SUTL-44 or SUTL-49, do NOT do anything in Section 0. You tried to do something in Section 0.
When you try to flash a lower version of firmware of the Moto Quark, the bootloader will NOT downgrade. It still remains the higher version.
TheSt33v said:
Section 0: Installing Firmware Version SU4TL-44
1. Go to Settings -> About Phone
2. Look at your Build Number. Is it SU4TL-44 or SU4TL-49? Look at your System Version. Is it 23.21.44.quark_verizon.verizon.en.US vzw or 23.21.49.quark_verizon.verizon.en.US vzw ?
If the answer to all of these questions is yes, skip to section 1. Do not perform any other steps in section 0.
If the answer is no, keep reading.
3. Is your Build Number higher than SU4TL-49? If so, you are probably out of luck. This guide probably will not work for you. In the future, please remember that the cardinal rule of unlocking anything is never, ever take the OTA unless someone knowledgeable tells you to.
@TheSt33v is very open to suggestions and he's been very helpful for all Quark users, not just the Droid Turbo XT1254. He added the sentence about
not doing anything in Section 0 because too many people were doing what you did, trying to downgrade to SUTL-44.
Do not take this next part wrong.... But, would a little more explanation have helped you in this case? Perhaps another sentence saying specifically "DO NOT TRY TO DOWNGRADE SUTL-49 TO SUTL-44"?" I am not yelling at you, I am actually asking if an all-cap sentence like that would have helped you?
Because for me, sometimes I need stuff like that in my face when I am reading quickly. 
You are on mixed firmware right now. Your bootloader did not downgrade but other parts are probably SUTL-44. You will need to re-flash ALL of SUTL-49. If Sunshine still doesn't work then, we can ask the Sunshine team for help.
