30 to 30c

Is there a way to upgrade vacuum 30 to 30c so I can have more option over the scheduling ? Once daily is the only option for the 30 I want once or twice a week

I dont think so.
But you could ask the support to get this 100% clarified.

The board for 30c is different to the 30. You can possibly find a faulty 30c and switch the boards, everything else is the same.

Other option, I believe there is some device that you can control with smart speakers, and you can make it learn from TV remotes (or your Eufy remote). May be possible to schedule that. I’m not sure on the name of the product but I’ll try to find it.

Edit: Search online for “Smart IR Remote Controller”. Just make sure they can do what you need. This Amazon one should do what you need: https://www.amazon.co.uk/Controller-Automation-Panamalar-Compatible-Smartphones/dp/B07K8M7HR6/ref=as_li_ss_tl?&hvadid=309842998494&hvpos=1o2&hvnetw=g&hvrand=2331419633277548493&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9044952&hvtargid=pla-607491141107&psc=1&linkCode=ll1&tag=itlnk-21&linkId=625e5cf007bb3f619a159f1f178eb1be&language=en_GB