Rockbox is really touchy about which sd cards it tolerates. Can't tell if the issue is with Rockbox or Tarkan's adaptors (opinions seem divided on the issue, i.e. between Rockbox devs and Tarkan!), but there's clearly an issue of timings and tolerances and maybe its only a happy accident that it works at all with at least some cards? Furthermore, apparently, Beyondwind's patch is a bit of a hack, that works in a way that the Rockbox people don't approve of and won't ever merge into the mainstream. But I always found that PNY cards were the one reliable brand...if their newer ones now don't work with Rockbox that's useful to know. But I thought that Tarkan agreed that the U1 PNY cards did work? The problems with the quad adaptor and micro SD cards seem even worse. For my quad adaptor ipod I have to make the database on a different ipod then manually copy the files across, as it can't build it's own database as it can't write reliably to the cards. I really wish someone was expert enough and motivated enough to resolve this issue, because it would then allow 6G ipods to be used happily with >128gb cards, which would be a very good thing. As it is, the only way to do that is with rockbox, but with rockbox you can't sync reliably, you have to use OF mode. Which you can't do on a 6G. Hence you can only really have >128gb on a video or a 7G.