At the SEPM console won't be able to monitor the auto upgrade process.
However, make sure you have added new MIME file type in the properties of the proper virtual directory:
1. Go to the proper website, right click the virtual directory where the setup.exe file is listed and select Properties
2. Go to HTTP Headers tab and on the bottom under MIME Map click on File Types
3. Click on New Type button and add new file type:
Associated extension: EXE
Content type (MIME): EXE file
C. Apply the Install Package to a Group:
1. In the SEPM, go to the Clients tab.
2. Select the group you want to upgrade.
3. Select the Install Packages tab.
4. Under Tasks, select Add Client Install Package.
5. Under Download Source, select "Download the client package from the following URL (http or https)"
6. Enter the URL to the setup.exe file.
(Example: http://IP_address/SEP_Install/setup.exe)
7. Click OK to save the settings to the group.
Refer this article: How to upgrade a client from a non-manager server using the "Download the client package from the following URL (http or https)" option.
http://www.symantec.com/docs/TECH106181
If it still failed need to check Sylink.log at client machine.