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Installation steps: 1. Take off the stock display covers (both the top and the bottom units). 2. Remove the screw at the bottom of the panel. 3. Inspect our display and make sure everything looks good after transit. 4. First install the connector. Make sure pins are aligned correctly (2nd pin from the left on the board has to be untouched!). Insert the connector and install the screw you have removed in step 2. Press blue on button and make sure the screen lights up and works properly as per pictures. 5. Remove adhesive tape which came with our unit. Put on the new display panel and make sure its fully inserted in place. Watch out for connector cables! 6. Insert button (remove adhesive strips again) and light extensions to your bottom panel cover. 7. Reapply the bottom panel cover you removed in step 1. 8. Upgrade the master online Use the APP "Mijia" or "segway" to connect the scooter Bluetooth to the new electric scooter master for online upgrade to the highest version. Turn on the vehicle → open the APP → search for Bluetooth → find and connect → prompt to find new firmware → click to confirm the upgrade → upgrade to the highest version. NOTE: 1. Only the Bluetooth board is damaged, not the main controller is damaged and make sure it is original., you can directly replace it. The main controller short circuit is the main reason for burning the Bluetooth circuit board. We recommend buying new and original product installations in our store to avoid damaging the dashboard. 2. If you encounter any problems during the installation process, you can send an email to contact our customer service team at any time to solve it for you