Assist to Load SDM onto a Csco 877 Router

Install SDM on a Cisco 877 router ## Deliverables I have? Cisco 877 router, which has had the SDM removed by the previous owner, presently has Cisco IOS I have attempted to follow the instructions to reinstall SDM to the router.? However having never used one of these before I must have done something wrong, as SDM will not install on the routers flash, or connect if loaded onto a PC.? I have run out of ideas to solve the problem hence am posting the job here The scope of this job is to use a remote login program (teamviewer or similar) to remote onto my computer troubleshoot the reason why SDM will not load, load it onto the flash drive on the router such that it is working I have setup tera term on my Vista computer, and tested that it will connect with the router.? The router is plugged into the computers ethernet port.? It has internet access through wifi through a different router