Question about methamphetamine synth (HI/P)

Hello, I have a question and I hope you guys can answer it. According to wikipedia: "With phosphorus, iodine is able to replace hydroxyl groups on alcohols with iodide"

So in this case, the hyroxyl group of Pseudoephedrine is turned into iodide(?) turning it into iodoephedrine(?)

However, after this reaction I'm lost, any help on what's going on?

Thank you.

NOTE: I'm not trying to synthesize meth, I just want to understands the chemical reaction behind it, thanks.

 

I think that the iodoephedrine is only a intermediate going on to Meth
in the same reaction, do you keep adding red phosphorous to the pot or
just the one time?? you need to keep it going by adding red phosphorous


http://en.wikipedia.org/wiki/Hydroiodic_acid

 

iodine + red phos creates hydriotic acid and that is how the wanted
hydrogen atom is introduced--yeah, its a simplistic answer my apologies
but red p and I are now controlled even thought they can be had from overseas sources I hear

The easiest way is the birch method but that is dangerous to someone who knows nothing
want to mail me a ticket to NL or poland where 95%+ of all amphetamines are made and we can do some for 20 a gram that is super pure!
c'ya