To enter Pairing Mode on the micro:bit you'll need to hold down  the A, B and reset buttons simultaneously, then release the reset button once the LED screen has filled and you see the Bluetooth logo.





microbit rear


Android

Using the Android App, developed by Samsung you will be walked through the pairing process step by step, but for reference here is a short video of the process.



iOS

Using the iOS app, developed by Insight Resources you will be walked through the pairing process step by step, but for reference here is a short video of the process.




MakeCode

There is a MakeCode experiment that adds support for Bluetooth flashing, however it is still in development so there may be a few issues with it. More information can be found here: https://github.com/Microsoft/pxt/issues/4807


How to enable it?

If you cannot see that button and you editor supports this experiment, go to About, then click Experiments and Bluetooth Download. If you cannot see this card, your editor does not support yet this feature.