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Reading upgrade procedure, I'm positive there is no way to go back,
aside asking for first firmware version. Searching does not show any
link to it. My best bet is that 3.0.2 has to be on the device, whatever
particular user thinks on performance. There is also a chance that
device has to be replaced for some hardware glitch.
New owners tend to overact when they upgrade or buy new device.
I do and I simply wait a bit to see the whole picture better. It almost
always solves my problem.
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