Upgrade IOS image on 2960x
sh ver dir flash: ip tftp blocksize 8192 copy tftp: flash: verify /md5 flash:/new_copied_image_name.bin <MD5 Value> sh run | i boot boot system flash:/new_copied_image_name.bin reload sh ver
Show version is used to check the Model of the device
Dir Flash: is used to check the free space on flash.
By default, TFTP block size value of 512, which is the lowest possible value. This default setting is used in order to ensure interoperability with legacy TFTP servers.
ip tftp blocksize <> allows us to speed up the transfer rate from the default of 512.
Copy tftp: flash: is used to copy the image from the tftp server over to the devices flash memory.
verify command is used to verify the image is proper and MD5 hashing matches with what Cisco’s website gives for the image you uploaded.
sh run | i boot will tell us what the current boot image is set to.
boot system flash:/ will tell the device which image to boot from.
reload will reboot the device with the new selected image from the boot system flash: command.
sh ver will verify the new IOS image has booted on the device.