Upgrade a standalone Cisco Catalyst 3750 (not in a Stack)

1. Download and save the required image from the Cisco website.
2. Ensure you have the minumum amount of storage space on your flash drive. For the IP Services image this is likely to be 16Mb.

Apply the command:

dir flash:

3. In this example I use TFTP32 to transfer files from my desktop to the switch.

Apply the command:
copy tftp:.bin flash:

4. Once the new IOS image has been transferred, configure the switch to boot with the new image the next time it reloads:

Apply the following commands:
config terminal
boot system flash:/.bin
exit
write memory
reload

Note: There is no need to change the config-register value as the it is fixed on the Catalyst 3750.

5. Type "yes" or press enter to confirm to reload.

6. Once reloaded check that you are using the new image:
show version