Dunno, perhaps it was the method he used, ask him:
https://twitter.com/#!/shootspeak

My mem's hazy right now....
All the doco's out there for every method, you just need to search hard/well.
I'll be doing that when the need comes.
Some of it's even in the N9/x0 guide, see my sig.

Its not that important to have the very lowest PR no. anyway.
The regional FW you use* may have a bigger impact on how soon you get it.

*i.e. which country