Error 507 Reload Software BlackBerry

Error 507 Reload Software BlackBerryFRESH INSTALL OS AND RESTORE BACKUPFollow steps below :Preparation1. BACKUP all your data (Full BackUp) - IF YOU STILL ABLE TO ACCESS YOUR BLACKBERRY2. Download BSAK  : http://www.bbsak.org/3. BlackBerry Desktop Manager 6 : https://www.blackberry.com/Downloads/entry.do?code=A8BAA56554F96369AB93E4F3BB068C22&CPID=OTC-SOFTWAREDOWNLOADS&cp=OTC-SOFTWAREDOWNLOADS4.