There is no set time for it to update. It simply depends on where in the Emm sequence you start the card. If you are really unlucky you can get into a situation that the card always misses the Emm you are after because its busy decrypting some previous Emm. The card itself can only process one Emm in every 4 or 5 due to it not having a Modulus co-processor.
wat procidure r u spose to follow for au, ie turn the box off etc then on , for it to update,, at the moment i have been waiting nearly 2 hrs and it hasent worked,,, i am in c & w area,, all i get is bbc 1 and 2 r ok, the rest all r a black screen