If you're looking to roll back a digital odometer, there are a few things you'll need to do. First, you'll need to find a way to access the car's computer. This can usually be done by opening up the hood and finding the fuse box. Once you've located the fuse box, you'll need to find the fuse that controls the odometer. This fuse is usually labeled odometer or trip. Once you've found the right fuse, you'll need to remove it and then put it back in backwards. This will cause the odometer to roll back to zero. Finally, you'll need to drive the car for a bit to get the odometer to start counting again.
Of course, rolling back an odometer is illegal in most places. Not only is it against the law, but it's also incredibly dishonest. If you're caught rolling back an odometer, you could face some serious penalties, including a fine or even jail time. So, if you're thinking about doing this, you should really think twice. It's not worth the risk.