During my last fw 1.5 upgrade it made a steady tone and needed to be sent in for repair. Took 3 weeks to get back. Only had 6 hours of flight time. Did not fly it yet. Was nervous but decided to upgrade to 1.6. Put file on the SD card. It made no beeping sound for 10 minutes then started beeping and updated. I did both batteries and it said it completed. Today I powered it up and the camera drooped and no camera signal I again tried to update firmware no beeping green and red gimbal lights blinking no sound. Been 40 minutes going to power down and check text file. I am so sick of DJI I think it is time to seek one of the new competitors. Sick of this crap.