Yeah, I recall being really confused when I discuvered that the retail version doesn't save, but the rom supports it perfectly.
I'd just left the save type as AUTO, and thought it was working, but it's posible that I've not beaten any scores...
I've been using an EF Omega DE since Christmas, and also use a EF IV.
I've noticed a recent issue with one game in particular, Pimball Challenge Deluxe. The SAV file transferred over from my EF IV with no problem, and I've been able to use it...
That looks like the router i just got from microcenter. Spectrum wanted to charge me $7 a month for a wifi router, so I said no thank you and just bought one, I paid like $65 tho