Step 1: Download firmware 1.3.3 from https://ninebot.scooterhacking.org/ NO CHANGES.
Step 2 Put new dash on the Scooter.
Step 3: Open the ESdownG app and flash 1.3.3. DO NOT REMOVE DASH AFTER FLASHING! THIS IS IMPORTANT!
Step 4: Open the Nine Dash app and connect to your scooter.
Step 5: toggle over to the tab where you see the battery stats and press the restart button at the top of the page. Wait one minute and you are done!
DISCLAIMER: I am NOT responsible if anything goes wrong with your ninebot. This is based on my success, Not yours.