Sometimes it is necessary to format or reformat an SD card before using it to upgrade firmware in a PS Audio product. Cards can become corrupt and reformatting them typically brings them back to life.
We recommend downloading an application, offered freely by the SD Card foundation, specific to the task.
For Mac computers, use this application:
For Windows based machines, use this:
Agree to the licensing requirements, download the application and install on your computer. Follow the instructions. It is recommend to use the full reformat option to FAT 16.
For SD card types and specifics, please refer to this: https://www.psaudio.com/ps_faq/sd-card-questions/