Im new to this whole idea of rooting so please bear with me if i sound like a fool. Anyways i downgraded my phone to stock 2.0.1 and rooted it. I then found this guide to rooting 2.1 How To: Root the Motorola Droid (Android 2.0.1 & 2.1) | The Unlockr so my question is do i have to revert to stock 2.0.1 or can i just drop the rooted droid 2.1 update .zip file into my sd card and open recovery mode and update?