check if you renamed the rofs2 properly as per the core version
check its extension too..... Can you list out the name of files u using for flashing ? We can then help if you are using correct file names or not.
RM-559_32.0.002_001_000_U001.uda.fpsx
RM-559_40.0.002_001_000_U001.uda.fpsx
RM-559_40.0.002_prd.core.C00
RM-559_40.0.002_prd.rofs2.V22
RM559_0578309_40.0.002_001
RM559_0578309_40.0.002_001.vpl
RM559_0578309_40.0.002_001_signature
These files are inside my RM-559 folder,
All files are downloading above X6 RM-559 40v link.