2. Enter DFU mode and register the ECID from your Mac's LU program on the website
3. Press Start in the app and wait for a while.
4. Click Generate New SN, copy the new SN into the blank space and click Write
5. DFU your Mac again, restore your Mac using the “Apple configurator 2” app, download it from the app store, or contact us to get the app if the app store says to upgrade to the latest OS version
6. Once restored, install macOS from Recovery via WiFi