After following the instructions of doing the software update on the 4510L, my computer told me that I had to restart my computer. I did that, and now, the 4510L does not broadcast to any of my wireless devices. I've pulled the batter, pulled the sim card (for 30 seconds). Restarted my computer, restarted my droid x2. When I connect the 4510L to my computer nothing at all happens. Vista does not show me connected to the 4510L.
I figured it out. I had the you must restart your computer message before the driver was finished installing. So, I ended up uninstalling the driver out of Add/remove programs. Then I went into c:/MiFi4510L and deleted the folder. Then, I went through the update again, but this time I made sure that the driver install was completed. Sure enough, the you must restart computer message came up before the driver finished. I waited for the driver to complete, then I removed the mifi correctly and rebooted computer. It works great now.