Can't upgrade firmware using Zooz S2 Stick 700 and Smart Things

[miker2069]

I went through similar secondary controller drama recently. I was eventually able to get it working. Possibly this thread my provide some clues

Ota firmware update iniitalization failed - secondary controller method - not prompting for security anymore?

So the few times I’ve updated firmware, I’ve always used the simple approach of adding my switch to my z-wave stick (Aoetec), updating, then having to exclude/include back to SmartThings. Yes, a massive pain as that process breaks all existing automations, routines, etc. So I was pleased to learn about the secondary controller method. It *seemed like I was on the right track, as I followed the instructions in the Inovelli tech notes as well as similar guidelines elsewhere. I seemed to have a…