Just got the 2013 EU DVDs and noticed that as well as the pre-2010 software (INDEX.TXT and LDM.BIN in root - version 0650) and the 2010+ software (574INDEX.TXT in root and LDM.BIN in 574 folder - version 0220) there is a software type called B48 (B48INDEX.TXT in root and LDM.BIN in B48 folder - version 0700). Checking the 2012 DVD this is also present on that. So what is the B48 software for??? BNS-5???