That's strange, it's written that making test on this instrument shall keep the RAM contents. Maybe the new OS can't access RAM from some reason?
What about trying to return the old OS chip and check if it can access the RAM? If yes, dump your data, change for the new OS and send data back...
Daniel Forro
On 18 Nov, 2014, at 2:48 AM, artijo@... [oberheim] wrote:
Hi everyone,
I'm new to this group and I own a Matrix 1000 since 1999.
To make it quick, I had that lost voice-chip problem for years without knowing it and fixed last month by buying a new CEM chip.
BUT, after upgrading from 1.11 to 1.13 ( and a few eprom settle problems) yesterday, I lost all my ram patches after doing a simple calibration test !
How can that be possible ?
Are they really lost or is it just a problem of accessing to the ram ?
I tried two hard resets but nothing has improved.
I don't wan't to dump in factory patches without trying something else : I'm not sure that ram patches were genuine or not (I never edited patches because I found them good).
thanks for your help.
Joël