-HELP- Error number 1 DSP-RAM failed on Kc

[pixie]

the update issue in only one aspect of the problem.
I have reboots when playing from time to time, or the keyboard might simply stop responding (mode local on ).
When the virus' keys stop responding, I can still trigger sound with an external midi source via midi in.

all in all it begins to look like a midi failure.
-cannot update OS via midi (despite receiving sysex)
-keyboard stop responding
-rebbot when playing keyboard

I have emailed access' service center but they haven't replied yet
synthesizerservice.de

has anyone experienced these problems ?
how good is synthesizerservice ?