Upgrade from MSP 8.0.0 Build 8009

Upgrade from MSP 8.0.0 Build 8009

Can someone please tell me how do i upgrade from MSP 8.0.0 Build 8009 to the latest version?

I have tried upgrading to ManageEngine_ServiceDesk_Plus_8_0_0_SP-0_27_0 and i keep on getting error occurred. Please help.

Thank You 

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