What is the process of upgrading a system to a newer software version?
(1) Use the copy tftp: flash: command to download the new image from the network TFTP server.
(2) Erasing flash makes room for the new image. Erase flash, if there is not sufficient flash memory for more than one Cisco IOS image.
(3) Each exclamation point (!) means that one UDP segment has successfully transferred
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