Upgrade IOS TFTP

Prerequisite:

in case of Layer2/Layer3 switch device you will need to setup first an Interface VLAN for being able to access the TFTP server (http://itminutes.com/cisco-create-interface-vlan/)
In case of Router device you will need to setup a valid IP address on the interface which can access the TFTP server.

erase flash:

erase flash storage for being able to copy the new firmware. The process may take a few seconds.

copy tftp: flash:

Itt will ask the image file name and TFTP server IP address. The image must be prepared on the TFTP server before.

verify flash:c2960-lanbasek9-mz.150-2.SE7.bin

verify that the image is uploaded and possible working

wr mem

write to the memory

conf t

boot system flash:c2960-lanbasek9-mz.150-2.SE7.bin

set the copied image as a boot image

do wr mem

write changes to the memory

exit

reload

restart the IOS operating system

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