Well this is a confirmed fact. I have a freind with a sansa e250 Using a app called rockbox He now has 8 gig storage capacity the stock 2 gb along with a 6gb micro “sdhc” card. Now allegedly Sansa claims this to be impossible via a simple firmware update due to hardware issues blah, blah, blah,. But I have personally seen it myself and am convinced this is bullox. And if the Sansa programmers cant figure it out maybe they should call those guys up and ask for some pointers.
You would really think that they would want to sell the more expensive sdhc card. Unless they are trying to unload a surplus of micro sd before saying “Oh I guess we can do this” OOPS 
