Please help me as.. i got an update of 10.7.5 and current version is os x lion 10.7.3

i got an update of 10.7.5 and current version is os x lion 10.7.3 as i always do to update it and at the end it says the update is tampered
please help me

You could try restarting into the Lion Recovery HD by pressing/holding the Command+R keys until you see the Apple logo. From the OS X Utilities Menu, select Reinstall Mac OS X which will download/reinstall Lion, but it will be the most current version of Lion (10.7.5). The install will not harm your data or apps. It just reinstalls the OS. Once the install finishes, run Software Update to bring your system current.
Back up your system before doing any of the above!
One Question: Are you sure you're running Lion 10.7.3 and not Mountain Lion 10.8.3?  Because your original post shows you're running Lion 10.7.5.

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