pretty sure that is a no, but AFB atm.

Power foci don't raise your magic rating; they simply add to tests in which you roll magic.

If you want to pull power points of of nowhere, you want a Power Pact or to be a Vampire, since those ACTUALLY raise your magic.

Also the Infusion adept ability, or an Infusion Focus.

Backround Count won't work either.

might be remembering wrong (it's been a while), but i think 3rd edition power focus will boost your actual magic? so i guess the answer could also be "depends on edition".

The SR4A wording is:


The only use for adepts is that it gives you some bonus dice for tests that involve your magic attribute. For example the adept power Attribute Boost:


Considering how expensive a powerfocus is, thats hardly worth it.

Garvel has it correct. If it is not worded as a "test," then the foci does not apply. As power points, and many of the adepts functions, are not considered tests, this would not apply. "Mind over Matter" has a similar clause preventing it from being used far less often than you might initially assume it would be.

...which is why it is only ever used for Logic->Agi conversion

spot on dude.
but that still does not clear up wether or not an adept would have gotten more power-points from that, or if stuff that works based on magic attribute simply gets stronger . . thast would mean he gets more power-points in a good background count too, in SR3 . .
There was, on the other hand, a specific ADEPT POWER FOCUS which did exactly this, if i remember correctly.