Do not enroll for this update. You'll get locked out with a pin or pattern. Your current pin/pattern wouldn't work. Factory reset being the only option, but you won't be able to set a pin/pattern after resetting the phone, therefore it's no use reset...
If the phone is in locked state and you cannot get into the phone through pin or pattern, then you need SD Card. Otherwise, nothing would work since update ADB isn't working for people who have been locked out completely (those who have restarted).It...
No, it isn't. They released it yesterday for the fingerprint bug which locked out people. And, the links provided above are for the fix. If you have the beta 1 running, you can check in updates, you may get one with 130MB update, if you haven't done ...