How to upgrade the SDM

To get SDM work, my action plan will be the following:

1. Check requirements.
2. Download latest SDM.
3. Delete old / unnecessary SDM files from flash.
4. Upload new ones via TFTP.
5. Configure router for SDM.

1) Requirements

Cisco Routers and Cisco IOS Versions Supported & Memory Requirements & PC System Requirements & Web Browser Versions and Java Runtime Environment Versions

http://www.cisco.com/en/US/products/sw/secursw/ps5318/prod_installation_guide09186a00803e4727.html#wp34446

2) Download software

The link from where you can download the latest SDM software, SDM-V234.zip:

http://www.cisco.com/pcgi-bin/tablebuild.pl/sdm

3) Managing your flash

After download, just delete the following files from the flash of the router:

sdmconfig-180x.cfg
sdm.tar
es.tar
common.tar
home.shtml
home.tar
128MB.sdf
wlanui.tar

For example:

Router# delete flash:sdmconfig-180x.cfg

SDM Files explanations can you find in the Release Notes:

http://www.cisco.com/en/US/products/sw/secursw/ps5318/prod_release_notes_list.html

4) Copy files to flash

After deleting, unzip SDM-V234.zip and copy the new required files to the flash from the TFTP server:

sdmconfig-180x.cfg
sdm.tar
common.tar
home.shtml
home.tar
128MB.sdf

For example:

Router(config)#copy tftp flash:

Recommended TFTP server from Cisco:

http://tftpd32.jounin.net/download/tftpd32.284.zip

5) Configure Your Router to Support SDM

http://www.cisco.com/en/US/products/sw/secursw/ps5318/prod_installation_guide09186a00803e4727.html#wp70999

SDM main page:

http://www.cisco.com/en/US/products/sw/secursw/ps5318/tsd_products_support_series_home.html