Here is what I found.

Page 2. #1 at the top of the page:

Boeing 777F Qantas Freight VH-QFA
by Bryan Ott
Date submitted: Feb 04, 2016
Description: Boeing 777F Qantas Freight VH-QFA.
Download

Note. You have to create an account at this site so that you can download it from the "Downloads" section!

Page 13. #8 and third from the bottom:

QANTAS, Boeing 777-200 (fictional)
by Marcelo Fabian Veneziale
Date submitted: May 22, 2011
Description: by Marcelo Fabian Veneziale
Download

Note. This one take a lot of looking through Marcelo Fabian Veneziale's liveries (search his name, do not search for a Qantas 777-200) he has done to find, but it is there! Also. This was originally done for the 777-200 Exterior Model (v0.1), but I am still using it on the 777 Captain (777-200) Base Pack, for the 777-200ER_GE (v1.8), and was using it on the 777-200LR (v1.7).


I would have happily given you access to download the Qantas 777F livery, but the HDD that I saved it on, AND installed FSX on, has crashed, and I'm still looking into getting all the data recovered from the HDD. :(