A smart thermostat updates its Device ID after a firmware flash. The update is successful. But the central hub still has the old EID in its ARP cache. The hub rejects the "new" device. Error R225 appears on the LCD screen.
[Physical eID Card] ---> [Outdated Middleware] ---> ( Blocked by Error R225 ) ---> [Secure E-Services]
refers to specific legal articles regarding electronic identification: French Commercial Code
Wait 15 to 30 minutes for the server's automatic session timeout to release any stuck processes.
This tells you exactly which program is holding onto the device and preventing safe removal or causing a driver timeout.
Settings → System → Reset Options → Reset Wi-Fi, mobile & Bluetooth.
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