I just want to upgrade because lots of apps don't support anymore Android lollipop and marshmallow, and I really like the neo u1.Are there any features you need that your U1 doesn't support right now, or do you just want to update for the sake of it? The U1 still works great for me, and I'm still on official Lollipop. My son spent the day today (again) playing Pajama Sam on it. If you really need an upgrade, you'll probably want to upgrade the hardware too, there's only so much you can do with software. The U22 currently runs Android 9, so that would be the way to properly upgrade.