How to Restore Accounts to view reports of a prior year Profit & Loss /Balance sheet etc. How do I know what version of Sage Accounts created the backup?

SUGGESTED

Year end has been run and I need the P/L report for the prior year. Sage Accounts will not run the prior year reports, so in order to view these reports do I need to download the version of Sage Accounts that created the last backup prior to running year end? if so is there a way to check which version created the backup? I tried opening the backup with notepad but gave up after 5 minutes of waiting!