Normal update steps
1. Run the BGS31 program.
2. Connect the AmiiPad controller to your PC via type-c cable. It will show "Connect" on the bottom left corner of the program when connected successful.
3. Click "Update All". It will take about 5-10 minutes to update the controller.
4. 5-10 minutes later, click "Cancel" when the program asks "Did you need to save the data you updated?"
5. Check if there is any "errors" show in the Error column. If yes you will need to update again. If no then update is done.
6. Press the reset hole on the back of the controller with a small pin, or the controller may get stuck. This small hole must be pressed with a pin.

NOTE: If you have trained amiibo for Super Smash Bro. and don't want to erase the trained data.  Please follow the below step to update the amiibo one 
by one.
1. Run the BGS31 program.
2. Connect the AmiiPad controller to your PC via type-c cable. It will show "Connect" on the bottom left corner of the program when connected successful.
3. Click "Refresh" to refresh the current amiibo data.
4. Check the bin file name in the update pack. For example the bin name is F_7_05.BIN. Find it in the BGS31 program and click it.
   (Rules:If the bin name contains 0A, 0B, 0C, 0D, 0E, 0F. The corresponding location on the program are: 10, 11, 12, 13 ,14 ,15 )
5. Click "Update" and select the bin file to update.
6. Update successfully and unlplug the Amiipad.