Did you use the file "SSKYBT512ND3.rel.fw" as said above?
Use this link to get the correct firmware:
http://h41111.www4.hpe.com/storage/msafirmware.html
https://support.hpe.com/hpsc/swd/public/detail?swItemId=MTX_e4af5736d2d743bc836ba7bee4
Did you use the file "SSKYBT512ND3.rel.fw" as said above?
Use this link to get the correct firmware:
http://h41111.www4.hpe.com/storage/msafirmware.html
https://support.hpe.com/hpsc/swd/public/detail?swItemId=MTX_e4af5736d2d743bc836ba7bee4