If you change the Wi-Fi password or need to disconnect the Magic QR code from a network you don't have access to anymore you can reset the Magic QR Code.
There are two levels of reset
Wi-Fi Reset: Hold for 6 Seconds
Factory Reset: Hold for 12 seconds
To reset: With the Magic QR turned on - insert a long paper clip into the hole on the back of the QR code until you feel a click, and hold for 6 seconds (Wi-Fi reset) or 12 seconds (factory reset).
After Reset, see below.
The Wi-Fi name and password will change and will not be Magic QR anymore
Wi-Fi Name After Reset: WLED-AP
Wi-Fi Password After Reset: wled1234
You can change the Wi-Fi name back to Magic QR (or whatever you want) in the Wi-Fi settings after you connect to the WLED-AP Wi-Fi network
All other settings should be unaffected. If you see the WLED-AP Wi-Fi but your Magic QR code does not light up anymore, you may have accidentally performed a factory reset instead of a Wi-Fi reset. Please follow the instructions below.
All settings will be erased and the configuration will have to be restored to make the Magic QR code work again. This option should only be used if a Wi-Fi reset doesn't work.
Wi-Fi Name After Reset: WLED-AP
Wi-Fi Password After Reset: wled1234
Configuration file: Medium (No built in battery)
Default Presets file: Medium
How to restore config and presets:
Connect to WLED-AP Wi-Fi
Tap Config in top right corner
Scroll to bottom and select Security & Updates
Under Backup & Restore
Restore presets first
Select file you downloaded and tap Upload
Restore configuration second
Select file you downloaded and tap Upload
Wait 10 seconds and turn your Magic QR off and back on
Many phones will not allow you to upload files if you opened the Magic QR code settings by tapping the 'Sign in to Wi-Fi' popup. If your phone will not allow you to upload files from this screen, close out of it (tap 'Use this network as-is' or similar if it's an option) and open your normal phone internet browser (Chrome or Safari) and enter http://4.3.2.1/ in the address bar. This will take you to the Magic QR code but you will be able to upload the config files from this screen.