Xoom rom question EOS JB

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http://forum.xda-developers.com – I have been looking into the Xoom EOS nightlies for my Xoom, however I run into the question of can I still flash them if I do not have an SD card inside my xoom? Can I just put the file on my internal storage and go about flashing from there? Last but not least, I have been following the thread and see that a lot of people have 3g/4g data issues. Do they have this stabilized at least in a reasonable sense? It gets kinda confusing seeing so many different posts on it. Thanks in advance and sorry for my nub questions :) (HowTos)