I want to enable the usb-video playback on my b550. Month ago I have upgraded the firmware. MODEL: LE40B550A5WXXH VERSION: SQ02 ONSCREEN info-box (MENU-SUPPORT-SOFTWARE UPDATE-INFO): SW ENGINE: T-CHELEU-1017,MODULE:T-CHL5DEUC-2009.0, DATE:2010-01-25 MICOM:T-CHL5DEUS-1005, SDAL-4.2.27-0201QRFS:28_64_256-28 T-CHL5DEUC I have read the instructions, but I`m not sure what to do. The wiselink option is grey, so I must to change the model to b650. Is that safe?