This is Very Good info to store in your memory if you have any room for it. I'll be leaving this particular forum from being a daily participant. So I would like to add a few things while I'm packing.
Hard Reset instructions, if needed, are close to the same as Binding:
With the RC OFF, hold down C1, C2, Video Record, and the Camera Settings Dial.
With those 4 buttons pressed down, power up the RC and that should set it back to factory settings.
Start up the Dji GOapp and if your RC is a GL300B it will instruct to continue update through the GOapp.
If your RC is a GL300A at this point will Not update through the GOapp, so download firmware 1.3 by putting the BIN file onto a formatted microSD card and place in the USB port on the RC.
Instructions are in the PDF file on the 1.3 download file.
You should then be able to update the RC through the app to 1.5.7
Hard Reset instructions, if needed, are close to the same as Binding:
With the RC OFF, hold down C1, C2, Video Record, and the Camera Settings Dial.
With those 4 buttons pressed down, power up the RC and that should set it back to factory settings.
Start up the Dji GOapp and if your RC is a GL300B it will instruct to continue update through the GOapp.
If your RC is a GL300A at this point will Not update through the GOapp, so download firmware 1.3 by putting the BIN file onto a formatted microSD card and place in the USB port on the RC.
Instructions are in the PDF file on the 1.3 download file.
You should then be able to update the RC through the app to 1.5.7