after shutdown, power disconnection and re powering the module is recognized without any problems.
HiFiBerryOS version: 20210203
Pi model: 4
As comparison: i also tested the dac2 hd on this pi without any probems/errors.
Is this an hardware eprom bug in the hifiberry Digi+ Pro module or is it a software bug? How can i modify the HiFiBerryOS system to force the digi+ pro driver in the config.txt? Is there a way for me to re-flash the eprom of the module if something is wrong with it ... or is the eprom defective and must be returned ?