There is also newer version of that - kernel based on MMC taken from N800 2.6.18 kernel which also has SDHC functionality but may (or may not) also work slightly better with MMC cards. http://fanoush.wz.cz/maemo/#sdhc This is newer code with many fixes but not so well tested as the older mmcplus kernel. There are only versions with multiblock writing enabled because this is enabled by default in 2.6.18 kernel.