to receive the advance payment you need to be receiving fortnightly benefits of FTB. Do you know whether you're current on the system but made a choice to receive zero rate of payment until the end of financial year? Or do you fill in a Lump Sum Claim once your tax returns are done?

If you are current but have opted
for a zero rate, you may be able to have fortnightly payments switched on, which will allow you to receive some payments and apply for an advance. Only thing I'm not sure
of is whether having not lodged your returns for 10/11 will affect this.

I'm sure BG will be able to tell you if this is the case