Mandatory IOS upgrade on Catalyst SD-WAN cEdge before config provision

[Flang3r]

Hello everyone,

Is it possible to have a mandatory IOS-XE upgrade on WAN edges (ISR1K series) once they establish DTLS with controllers for the first time after PnP redirection and only then push the configuration group templates?

I'm trying to streamline ZTP onboarding and would love to have software upgrade as a first step for compatibility and compliancy. 

Fabric is running on 20.16.1

[Flang3r]

I was able to find solution. If anyone comes across the same requirement:

https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/Monitor-And-Maintain/monitor-maintain-book/remote-server-support-for-software-upgrades-using-ztp.html#Cisco_Concept.dita_e7019547-4b24-494f-8a93-6c68319b50b2