So apparently the R4i-SDHC (not R4iSDHC, there are two different types now one with a dash 'R4i-SDHC', and the one without a dash 'R4iSDHC') is now compatible with FW 1.4 according to their website http://www.r4i-sdhc.com
Does anyone know if they have released an update similar to Acekard 2i to...