Echo ADB, USB, and NDIS drivers

Okay. How exactly am I supposed to add the SDK addon to my current SDK? Or can you just help me with trying to recognize my ECHO on ADB. It worked once before but for some reason it no longer shows my device is attached.

**EDIT
I got it. I finally decided just to use my PC instead of Mac
 
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I also encounter same problem, USB Driver installed but failed to recognize my ECHO..what seems to be the problem??
 
Can someone share the drivers? the kyocera echo website is down, cant find them anywhere hope someone can share them. Thanks
 
Setting aside the NDIS, are these other drivers only for development purposes? It will determine which PCs I install them on.
 
Can anyone tell me how to root the kyocera echo running 2.3.4 2.006sp
?
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