What version A380 does Singapore Airlines deploy on LHR-SIN and SIN-SYD?

What version A380 does Singapore Airlines deploy on LHR-SIN and SIN-SYD?

Singapore has 2 versions, with the difference being (1) all Business Class on top deck and (2) a mix of Business Class and Economy on the top deck; 

As for rotations on the versions, its mixed, however (happy to be corrected) only the mixed class version travels to AUS the majority of the time;

• SIN to LHR (28/11) SQ322 is mixed and SQ318 all BC;
• LHR to SIN (28/11) SQ317 is mixed and SQ321 all BC;
• SIN to SYD (28/11) SQ231 is mixed;
• SIN to SYD (27/11) SQ221 is mixed;
• SYD to SIN (05/12) SQ232 & SQ222 is mixed;

Cheers

As far as I know the all Business upper deck used to be deployed to Sydney but not since last year.