Hi Bob,
I've updated twice before to previous firmware with no problems so I'm not sure where i'm going wrong.
1. Start with clean SD (I have tried 3, Class10 cards) formatted exFAT.
2. Insert SD into drone and format within the DJI Go app.
3. Insert SD into laptop (I have tried USB2 and USB3) and unzip firmware(bin file only) to the root of the card.
*Note: I have unzipped direct to root of SD card, Dragged and Dropped to root, copy and pasted to root, cut and paste to root...
4. Insert SD back into drone and fire her up.
*Note: Only the drone is on. Controller and device are off.
From here, the beeps and lights do their thing which seems consistent with every other update I have performed. Then, maybe 7 minutes in, the dreaded scream and solid red gimbal light occurs.
Looking at the log file, it seems that it's not detecting the camera. However, I can roll back the firmware to 1.3.2 successfully...although that can take a couple of tries.
I have also checked the physical connections which look fine.
Cheers!