Yes, reflashing would only work with a 2002 turbo model. You should contact whomever sold you the cable and return it, unless you are interested in just doing logging.
Ok, that would be me. sorry about this situation Aleksandrs, but I was going by the published information that says it will work on the NA model Impreza, I suppose that was for data logging only.
Btw before purchase ive seen the link to page where all copatibility list is avaliably, but i never could find it! Could u guys copy/paste the filment list for newer/older cables, to avoid misunderstandings!?