I just got done doing the NLZ trick on my Spark using NLD. I am confirming what a few others have noticed: Although NLD claims ver .1000 is NLZ removal-compatible, it is NOT. You cannot remove NLZ's in the .1000 firmware!!! The app will hang, but thankfully no harm is done should that happen. You must first roll back to firmware .0900, then you will be able to accomplish the NLZ trick.
Also, make sure you use a full battery for the firmware rollback. The download will take a few smooth minutes. Now, when the firmware flashes to the Spark, at about 86%, things will stop for several minutes, and you will see some led changes, along with disconnecting/reconnecting of the Spark to Windows. Do not sweat, it is doing it's thing and will again pick up and complete the flash. I get sweaty palmed when those timelines stop and 'hang,' so just be ready for this. Also great news.... NLD no longer requires using DJI Assistant 2 during any of these processes. Totally standalone now!!
Also, make sure you use a full battery for the firmware rollback. The download will take a few smooth minutes. Now, when the firmware flashes to the Spark, at about 86%, things will stop for several minutes, and you will see some led changes, along with disconnecting/reconnecting of the Spark to Windows. Do not sweat, it is doing it's thing and will again pick up and complete the flash. I get sweaty palmed when those timelines stop and 'hang,' so just be ready for this. Also great news.... NLD no longer requires using DJI Assistant 2 during any of these processes. Totally standalone now!!