Upgrade Cisco Catalyst 3850 Switch

Modified on Wed, 19 Feb at 8:34 PM

Get the firmware file from Cisco:

https://software.cisco.com/download/home/284455428/type/282046477/release/Gibraltar-16.12.12

Put the file onto a FAT32 formatted USB and put that into the USB port on the front of the switch.


Boot the switch using a serial console. At a prompt, run:

show version


If the current version is 3.x:

software install file usbflash0:cat3k_caa-universalk9ldpe.16.12.12.SPA.bin force new


If the current version is 16.x: (untested)

copy usbflash0:cat3k_caa-universalk9ldpe.16.12.12.SPA.bin flash:
software install file flash:cat3k_caa-universalk9ldpe.16.12.12.SPA.bin new force
reload

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