Nothing pops up when I plug in Cerise

iOS / iPadOS 26: Cerise is detected but does not respond

If connectivity is unreliable on iPads running iOS / iPadOS 26 or later, update Cerise to firmware 1.8.11. A typical symptom is Cerise appearing in Settings > Ethernet while the IP address and subnet mask fields are empty; Cerise does not respond and its WebUI cannot be reached. Use the computer-based USB update procedure linked above, then reconnect Cerise.

Firmware 1.8.11 improves reliability and sets the default USB IP address to 172.30.0.1 on all Cerise units. We recommend that all users update to 1.8.11 and use this default. The old workaround of changing the first two parts of the IP address is no longer needed.

Make sure to check which color is the boot LED. Green means there is power but no USB data/connection (this is normal when using via PoE power). Cyan means there is both power and USB data.
No USB data is usually caused by a bad cable, but not always. Try a different known-good USB cable and try without the provided USB splitter. Sometimes certain cables might work one way but not the other, as USB-C connector can be plugged-in both ways, so it’s worth trying both ways.
If the cable works but you don’t get data you might want to check if the USB port of your iPad/computer works. Sometimes these can be disabled in settings or if the ipad isn’t unlocked (see below for more info).
If the issue persists you may want to try updating Cerise to the latest firmware as this will overwrite potentially corrupted parts of the memory.
If none of this fixes your issue, please submit a support request.