The best place to see firmware changes is under Organization/Firmware upgrades.
![PhilipDAth_0-1719348727104.png PhilipDAth_0-1719348727104.png](https://community.meraki.com/t5/image/serverpage/image-id/38045i925DB7239092DD0A/image-size/medium?v=v2&px=400)
![PhilipDAth_1-1719348764390.png PhilipDAth_1-1719348764390.png](https://community.meraki.com/t5/image/serverpage/image-id/38046iB0F8005D540D37E9/image-size/medium?v=v2&px=400)
It doesn't tell you the prior firmware, but if it was a recent change you can click the "rollback" button to revert the change.
![PhilipDAth_2-1719348808354.png PhilipDAth_2-1719348808354.png](https://community.meraki.com/t5/image/serverpage/image-id/38047i9CAC30D0FDAD13D0/image-size/medium?v=v2&px=400)
Errors should appear in the event log - but I would hope that they are a rare event.