9300, 9400, 9500 IOS upgrade | 17.3.4 to 17.12.4

[FakePuertoRican]

Can anybody share any experiences upgrading from 17.3.4 Amsterdam to 17.12.4 Dublin? Want to make sure that any kind of compatibility issues aren't present or common before I make any annoying choices. Thanks in advance!

[Leo Laohoo]

Direct upgrade to 17.12.X is fine.  Make sure to read the Release Notes carefully.

I have recently upgraded several of our Cat 9 switches, from various 17.3.X or 17.6.X trains, to 17.12.4 without any "automation" assistance (line PI or DNAC) and I have 100% success rate.