I'm trying to update zimbra connector to the latest version but I get the following error message:

"The feature you are trying to use is on a network resource that is unavailable.
Click OK to try again, or enter an alternate path to a folder containing the installation package 'ZimbraOlkConnector-5.3_GA_2101_5.0.2533.3.msi

Does anybody know where I can download this version?
Thank you.