Once you got a version somewhat decent on your internal flash, then try complete backup with any partitioned SD, once you got one MMCboot, then follow the same instructions, I think it is cp12wf.sh will clone mmc1 to mmc2 or vice versa. You then end up with 3 boots, intFlashboot, MMC1boot and MMC2boot. From now on, stick with one boot that chosen as default, you can then keep modify this default boot until you like it, then clone to your MMCboot clone for backup, and any time you install something you do not like, you can always snap right back by using the backup clone. Of course, you can also reverse clone to snap the MMCboot back onto the intFlash provided the rootfs is under 514 MB. If bounced off, nothing bad, it just wont boot, till you make the rootfs smaller. This backup is extremely handy for testing new betas. Hope you like it,

bun