[Q] AT&T 4.4.4 update via SD Card? topic

I'll cut to the chase. I've read about 200 pages and can't seem to find what I'm after. I read the noob threads which were very informative.

I am located in Australia. Bought an AT&T Galaxy s4 from eBay Hong Kong. My last phone was an HTC and I used numerous ROMs on it but I want to keep touchwiz and samsung apps for now. I'm not ready to ditch all the features on my new phone just yet by installing a custom, stripped down ROM.

My GS4 came with JB 4.3, Baseband version MJ6.

I want to apply the AT&T 4.4.4 'official' update, but due to being on a different carrier in a different country, the OTA update just won't happen.

Can anyone point me to the official 4.4.4 firmware ?

Thanks in advance.