Its highly recommended to use 4.9 kernel on 4.9 based ROMs because it needs 4.9 blobs and changes in ROMs and 4.9-fixes.zip is just a workover but If you want the magic of 4.9 kernel you should flash it with 4.9 based ROMI've also tried to flash this on crdroid latest 6.10 version which uses 3.18 kernel and also flash the 4.9 fixes zip, but still it asks for my SD card to be formatted before I can use it.