SR-18 resets Rec Setup settings on every boot

I just got an Alesis SR-18 drummachine.

Every time I boot it up, the velocity is set back to MEDIUM and the click volume is back at 70, in the Record Setup.

My machine is always connected to mains and the internal battery seems to fine (?)

Is there a fix, or what could the cause be?

Do I need to SAVE the Rec settings somehow? I don't know how

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