3850 Stack Member Firmware Downgrade

[avilt]

I need to downgrade OS from  16.03.07 to 3.06.09 for some testing.

As per the downgrade procedure I need to execute the following command on the switch but it’s not available. Please advise.

SW#switch all

                       ^

% Invalid input detected at '^' marker.

SW#switch ? 

  <1-9>  Switch Number

[balaji.bandi]

That command switch all option to clean up all switches in your stack.

you can use below document to downgrade.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/16-3/release_notes/ol-16-3-3850.html#pgfId-1195184

hope you have backup config and doing this maintenance window (in production environment).

[pieterh · Accepted solution]

the "switch all" referred to is not a command on its own

it is an option to the install command s

Switch# request platform software package clean switch all file flash:

Switch# request platform software package install switch all file flash:cat3k_caa-universalk9.SPA.03.07.02.E.152-3.E2.bin new auto-copy