Analog Blackfin Processor Silicon Revision issue
If you purchased the parts from a reputable distributor and a sampling of the parts show the wrong chip stepping level then you should return the parts to the distributor for a refund or proper exchange.

Make sure that you read the vendor documentation completely so that you know 100% sure that you understand the chip version reporting system. Sometimes things may not be exactly as we think them to be.

Lastly if you purchased parts from a less than credible source, which may be done to save money, then you have what you have and your recourse is limited or nothing.