Install larger flash :) Sorry to be so flippant, but it does require a bit of overhead. Depending on which platform you might have an issue with partioning or discontiguious memory blocks. What the docs dont tell you is that it needs 7mb of contigious memory to load the image. Earlier versions of platforms had command line memory management ability "compact" and "squeeze". These latest platforms are supposed to be all automatic, but sometimes they aren't.