14.0.6123.5000 build version showing wrong

Hello,

My name is Rajasekhar, I have attempted to install the October 2012 CU for SharePoint Server 2010 and received the above error.

"The expected version of the product was not found on the system"
 
I have ensured I had SP1 and Language packs SP1, and i have June 2012 installed, but the June build version supposed be 14.0.6123.5002, but it is showing 14.0.6123.5000

Can anyone advise how to install the October 2012 CU?

Thanks