The Aerophone AE-20/AE-20W displays "USB Memory is not Ready" when a USB flash drive is not recognized. Check that the USB flash drive meets the following requirements.
- Capacity: 32 GB or less
- File system: FAT32
Note: For the following operations, use a USB flash drive formatted to FAT32 on a computer.
- System program update
- Data backup and restore
- Installing sound packs
- Formatting a USB flash drive on the Aerophone AE-20/AE-20W