Anyone can help to solve my homey, it was display red ring after update today. PTP had no affect. Power supply in good condition.
Step1: Put the Homey on Factory Reset mode.
Step2: Using a laptop, browser, type the path: “setup.athom.com”.
Step3: According to the instructions, connect Homey to your WiFi network, which has an internet connection.
Step4: When it trying to conect to your WiFi netnork, press ALT button on your keyboard, and hold until the screen appears button “OK” to download firmware update. Now you can release the alt button and follow the instructions.
p/s: I emphasize that this is not a power problem, use the adapters and the cable that come with the device.