Okay so the HK variant of the 1520 is now on Denim, according to the Microsoft site. I'm currently running WP8.1 GDR1 DP, and I wanna update to Denim. I tried to update with Preview for Developers on and off, but it's still saying it's up to date. I checked Extras + Info and it says I'm on Denim. I can't use Lumia Camera and I know I never updated to Denim before so I know it's not yet on Denim. I also checked Lumia Software Recovery Tool but it can only install Cyan. Any suggestions?