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