If the device specificiations allows the Flash content reading,
DUMP commands are implemented.
READcommand prints on the Terminal the selected area.
DUMPcommand save the selected area read in a binary file. The discrimination between
DUMPcommand for different channels is the prefix (i.e. S01_, S02_) on the output file name.
You can do byte-to-byte comparison using
VERIFY READOUT method, which compare original source file with programmed flash area.
Some devices mounts also a
MARGIN VERIFY command which let you check if device flashing will respect quality standard and will be stable through years.