The KPA's can’t work，updating analogboard firmware！

My KPA often doesn't work，The content of boot display is“updating analogborad firmware” Sometimes for 10 minutes，But sometimes it doesn't open for hours。

Sometimes it's half played and suddenly doesn't make any sound with the input has no signal.I'd like to ask why.

really need help！

Quote from ST

Hey call for cthulhu,

I'm sorry you're having trouble with your Profiler.

You need to contact Kemper Support

https://www.kemper-amps.com/contact

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I've already made contact, but so far there's no answer