Update IOS 3850-24XU-L from 3.7.4e to 16.3.5b

[Michel Derycke]

Hi all,

I'm trying to update my 3850-24XU-L  from 3.7.4e to 16.3.5b.

Whatever I try (ios being copied from usb, tftp, even using the emergency-install etc...), the switch is not updating.

I get following message when issuing the software install file command :
[1]: % Candidate package compatibility checks failed because the following
package dependencies were not satisfied. Operation aborted.
[1]: % An internal error was encountered. Operation aborted.

Any help would be really appreciated!

Kind regards,

Michel

[Georg Pauwen · Accepted solution]

Hello,

how are you installing the file ? From flash, try to add the keywords ' new force', e.g.:

3850#software install file flash:cat3k_caa-universalk9.16.03.05.SPA.bin new force

[Michel Derycke]

Many thanks Georg. You made my day!

[andrewsbc]

Thanks, very helpful

[iMars]

Yup, don't try, just do it :-) It's a requirement: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/16-3/release_notes/ol-16-3-3850.html#pgfId-1165953