I would suggest that you reload them with 2.63. If your speakers did not display "DSP8000.2" on the display when powered on from the panel switch before you did the upgrade, they are not a .2 version for which the 3.16 firmware is intended.

As the 8000.2 was released about the same time as the SE in 2014, I would imagine that true 8000.2's are pretty rare in the wild. The 5200.2 on the other hand is common here in the US.

My personal 8000's were SL versions and not .2 when I upgraded them to SE.

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