If your device keeps disconnecting and reconnecting when plugged into the computer, work through these in order:
Use a supported desktop browser — CircuitBlocks needs a Chromium browser (Chrome, Edge or Opera) or an up-to-date version of Firefox on a computer. It cannot connect to your device from Safari, a phone or a tablet.
Try a different USB cable — some cables are charge-only and don't support data transfer.
Try a different USB port — avoid USB hubs, connect directly to your computer.
Restart your browser and go to code.circuitmess.com.
Try the Restore Firmware button in CircuitBlocks.
If none of these work, please message us here, or email [email protected], with photos of your device (front and back, casings removed).