Be careful. I just migrated my Slaesh's to MR3U. Made a mistake that installed the latest CC2674P10 firmware which is a DEV firmware. After one day, all of my devices (100+) disappeared. Even after rolled back to Shlaesh's coordinator. FInally after few hours of work, search, Gemini chats, I installed the 20240716 firmware and now it works like a charm. And also there is an issue with the Thread addon in HA, since it needs a serial USB device even for the network based MR3U, so I had to re-plug my Slaesh's coordinator to be able to install the Thread on LAN 🙂 Shame