Copy the destination files in the bullet list to folder  C:\Program Files (x86)\Sophos\Sophos Anti-Virus\

• native.exe from C:\ProgramData\Sophos\AutoUpdate\Cache\savxp\native\amd64\
• All files from C:\ProgramData\Sophos\AutoUpdate\Cache\savxp\drivers\onaccess\win7_amd64\
• All files from C:\ProgramData\Sophos\AutoUpdate\Cache\savxp\drivers\boottasks\win7_amd64\
• All files from C:\ProgramData\Sophos\AutoUpdate\Cache\savxp\drivers\sdcfilter\win7_amd64\

Right-Click Sophos Icon from the taskbar and run update now. Sophos should update now and the latest IDE should appear in the C:\Program Files (x86)\Sophos\Sophos Anti-Virus\ folder