There's an extra partition on your EMMC... What you should do is to delete /dev/mmcblk0p4 then delete /dev/mmcblk0p1 recreate /dev/mmcblk0p1 then assign it's filesystem as 0c or fat32 to avoid reboot loop using sfdisk or fdisk. But I prefer fdisk. It's much easier to do than sfdisk. You must have a copy of fdisk in your external memory card. If your using windows you should put it in your memory card's absolute path.. specifically you should type Anyways if you got fdisk working here's the step by step.