If you are a Samsung device owner and you are looking for ways to downgrade Android OS in your device, then you should first check out our guide on how to downgrade Android OS in Samsung devices. If you have a Galaxy S6 or S6 Edge device, then we recommend that you downgrade Android OS to Marshmallow. If you have a Galaxy Tab S2 or Tab S3, then we recommend that you downgrade Android OS to Nougat. If you have a Galaxy Note 8 or Note 9, then we recommend that you downgrade Android OS to Pie.