The process is moot if you have already upgraded from PR1.0 to PR1.1 and you're trying to reflash PR1.1 again using another region lower than what was already flashed on your device. As I said, you cannot downgrade (from your region to another region with a lower PR_code). You need to wait for PR1.2, choose a different region (lower than what you have) and that should work. For now, all you can do is wait for PR1.2....