Doesn't the wiki link in your first post explain what eMMC is?

fiasco and eMMC images
In other words, the eMMC image is kinda like ghost on Windows PC. Flashing nokia's eMMC image means you want to wipe out everything in your disk and overwrite the space with what it used to be before you open the box.... like restoring a ghost image to a harddisk. "Vanilla" here means the original state before you decide to add chocolate or strawberries to the top...

The firmware (fiasco) image is essentially the original kernel.

As the wiki entry and the Nokia restricted download page say, if you want to flash everything, then you MUST do this exactly:
See if this simplified walkthrough is useful to you:
http://discussions.europe.nokia.com/...ata/m-p/591877

In your case, you must flash the firmware first and then eMMC in one go without powering off or rebooting. And the -R (means "reboot" (!!)) option is actually not necessary for both flashing procedures.

When flashing completes, you just disconnect the USB, take out the battery, then put it back, and finally power on the phone.

BUT never, ever disconnect when flashing has started. Doing so may prove fatal and your phone will magically transform into an expensive paperweight....

If flashing stops and waits for USB despite USB connection, you may try a different USB port or one on another computer. This has helped many times in my case as the USB on my laptop is acting up every now and then..

btw what happened after the last line shown in your screenshot, and what did you do then?

md5sum
In the nokia download page, you should be able to see the link of md5sum. The file is a list of the checksums of all the old and new versions of firmware (fiasco image) and the eMMC content. To use this, install a md5sum program for windows, then use that program to find out the checksums of your downloads, and then compare your findings with the ones in the list. If yours are different from them that means your downloads are incomplete or corrupted. You should ALWAYS check the files' integrity BEFORE using them.

If you can spend an hour or two reading all the relevant information beforehand, you'll realize that you have just saved hours of frustrations and confusion.