What you need to do is get the B430 ROM files and flash your unit.
Fixme
May 2010
i got the same problem i called binatone helpline they said it will cost £39.99 as its a software problem and i havent got a recipt but its free of charge if you have the recipt
nick
February 2010
I can answer this question...
Binatone b430 only shows welcome screen when turned on?