Look for a version string. For full app compatibility, your A79 should typically be on version or higher. Step-by-Step Update Guide
Copy the firmware file (unzipped, if necessary) onto the root of the SD card (not in any folder).
Are you experiencing a (like the external mic not working)?
You cannot proceed without knowing exactly which firmware version is currently installed. Many issues arise because users download the wrong file.
Look for a version string. For full app compatibility, your A79 should typically be on version or higher. Step-by-Step Update Guide
Copy the firmware file (unzipped, if necessary) onto the root of the SD card (not in any folder).
Are you experiencing a (like the external mic not working)?
You cannot proceed without knowing exactly which firmware version is currently installed. Many issues arise because users download the wrong file.