Ok, so 2011 JGC is High Speed.
I have a 2011 Grand Cherokee w/ 430N RHB. My manufacture date shows 6/11 (right on the cusp of going either way). I tried doing the 43.1.40 HS update, but it keeps telling me to insert a usb device with the necessary software. I looked for the module under the passenger and driver kick panel with no success of locating it (to see what SW was stamped on it). I found it in my '11 Wrangler, so I know what the box looks like.