We have a Peplink Balance 580 being used in our office. This problem occurred just today. Made a simple configuration change to the Outbound Policy, saved the configuration and applied it. Then a warning window popped up with this message
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“Changes are applied successfully. But the router failed to write configuration data to the flash memory. Please backup the configuration immediately, download a diagnostic report and report this to Peplink support*.”
The running firmware 7.0.0.