[Q] Trouble installing CWM after OTA 4.3 Update topic

Hi guys,

Looking for some advice.

I previously had my phone rooted on 4.2 and everything was working great. For some reason I decided to install the OTA 4.3 update before reading here what it did. Before that though, I did a full backup through CWM.

Anyway, I'm now having trouble re-installing CWM to get back into recovery mode and go back to my backup.
When I try flashing it through Odin, it says Failed, and it seems like the phone blocked it because it is a recovery system.

Currently, when I boot up, I get the Custom logo, and when I try to go into recovery mode, it gets blocked and says it's unauthorized software, so I don't think I really installed the update right.

So, is there anyway to get CWM back on the phone to revert to my backup, or is there a way to flash the whole backup from a PC? The file is still intact on my SD card.

Thanks!