The seller did not originally flash the card. He merely used the 13" PB as a test bed. If you define R1 as Revision 1, then that is what is flashed in the Sonnet card, as evidenced by the fact it works (with video) in that R1 Wallstreet 13". And that shows it won't work in the R2 (newer PDQs) as the R1 ROM refers to a video chip that the R2 PDQ's don't have. That is why some Sonnet users have reported no video when they moved the Sonnet card to a newer machine. Scroll back up and read the threads I linked for you which talk about this.