I'm trying to find instructions on how to upgrade my IOS version but all I'm finding are how to backup and restore config files. I use a TFTP server to backup my configs currently and I believe I can also use it to upgrade the IOS but I don't know how. Can someone point me in the right direction please?
If you connect to the console port and want to transfer the image over the console port it would need to use xmodem which is VERY slow.
If you have the image on a laptop, do you have tftp server software on that laptop? would it be possible to connect the laptop to a LAN port of the router (using a cross over cable) and transfer the image directly from the laptop to the router using tftp?
Another possibility to consider might be to use FTP instead of TFTP. If the server (or the laptop) where the image is has FTP server capability in addition to TFTP capability you would find that transferring the image with FTP is faster and more efficient than transferring with TFTP. I have had the experience several times where we were having problems getting a successful image copy using TFTP and it worked without a problem when we used FTP.