The FFF4 (decimal -12) error code indicates that the reply data does not match the requested byte count.
An issue with firmware version 1.42 caused all write commands to report a -12 (FFF4). Any version MVIXX-DFCM version 1.44 or greater has corrected the false reporting of this error on write commands.
Related Keywords:
MVI46-DFCM MVI56-DFCM FFF4 -12 DF1 DFCM