This tool will allow you to format only 64gb memory card in a FAT32 Format
Note* Older generation camera only reads FAT32 to Flash Firmware.
Using the Fat 32 Formatter for 64GB Micro SD Card - Windows Only
Insert the 64gb Micro SD Card into the PC
Use the included Micro SD to SD card adapter, if required.
Download, Unzip & Install the Fat 32 Format Tool exe file (button link above).
Click the Start Button to start formatting -
If error message shows, close all programs including the format tool and reopen the format tool software.
Once you see "done", click Close.
Step 5: Your done! Your 64gb micro SD card is not FAT32 Format.
Now you can install firmware from your 64gb micro SD Card.