HTC Magic ROM upgrade but not for my Magic

On 09-09-09 HTC Australia released the ROM Upgrade for HTC Magic, I was happy to hear that information. And i try to download the ROM Upgrade but in order to download the update you have to type your phone serial number. Then I type HT95ZKF09920 , but i got the following message:

After that I just realized that, my phone is not from Hutchison telecoms, I was wondering how HTC just release only by zone not for all HTC Magic phone?

The other thought is about iPhone update, I think this is the reason that iPhone is still on the top mobile phone, because iPhone update and iPhone App.Store always available for iPhone users.