I just came across this one on the JAC's kernel xda thread...it explains why I wasn't able to implement Voodoo Lagfix Beta4: First in either Terminal or ADB shell Code: cat /sys/devices/platform/s3c-sdhci.0/mmc_host/mmc0/mmc0:0001/block/mmcblk0/size Then take the output of that and multiply it by 512. If it comes out to "16005464064" Then beta4 will work for you. If you end up with a value of "16441671680" then you have the 416MB larger NAND chip and will need to wait untill beta5. This has been updated in the OP to keep people from having issues. This was posted by JAC himself.