[ubuntu] Problem to upgrade VirtualBox

Hi all,

OS Ubuntu 14.04 desktop 64bit
Current VirtualBox Version 4.3.32 r103443

I have
virtualbox-5.0_5.0.10-104061-Ubuntu-trusty_amd64.deb
Oracle_VM_VirtualBox_Extension_Pack-5.0.10-104061.vbox-extpack

download on Internet while I started VirtualBox Manager. But I was unable to install it running Ubuntu Software Center.

Please advise whether there is another way to upgrade my current version to virtualbox-5.0_5.0.10-104061?

Thanks

Regards
satimis