To update your Moku:Lab firmware, first ensure your iPad has the latest App. This can be confirmed by visiting the app store.
Then, connect to your Moku:Lab and you will be prompted if any firmware update is available.
If needed, new firmware will be uploaded wirelessly. The update process takes a few minutes. (On some older Moku:Labs, this firmware could take up to 30 minutes).
Do not turn off Moku:Lab during this time; you can observe progress from the power button status LEDs