Simple answer: No you can't.
Explained answer: You need a jailbroken PS3 in order to transfer patches, unless, as said in previous posts, you use a Data Transfer (you need 2 PS3s though!) otherwise, just wait until a 3.56 CFW comes out, shouldn't be too long now.
If u would read the Thread, than u would know i got 2 ps3s. one on 3.41 JB and other one on 3.56. But somehow it always want to download the new patch even on my 3.41<.<