uasav8r
Active Member
Experienced the same issue (error code 129). Re-selected DJI Go4 App and Spark in upper left corner. No further problems. As a side note, if you press the three lines in the upper right corner for about 3-5 sec, the version number of controller will appear and also offer the ability to changeProblem with update. Updated Spark, RC, and one battery via wifi. Rebooted Spark, worked fine. Insert 2 additional batteries and got this warning, "Cannot take off. (Error code 129). Contact DJI support." Not the usual "inconsistent firmware" when you then update. Any suggestions? Status lights on the Spark are normal (slow blinking green rear, solid red in front). Just won't fire up with either of these 2 batteries.