For my device, updating adb will work.

One of the best Guides I have found is the one at:
http://forum.xda-developers.com/show....php?t=1741395

OR if you are using a Debian based Linux Distro, I've found this to be the best, which includes pictures as well:
http://bernaerts.dyndns.org/android/...nexus-7-tablet

Both provide very clear instructions on what needs to be done. My Windows machine is having driver issues so I used Ubuntu and everything is flawless with those steps.

I've learned that toolkits can be useful, but what happens if something breaks during the process or does not complete like it should? Knowing how to do it via the steps provided above will only help you in the future. Let me know what you think!