Originally Posted by oppy
info on reverting back to stock (1.2 I believe). Once you're there, you should be able to update to 1.3 and then do a ManualNooter.
Those instructions will work fine, but no need to revert to 1.0.1 or 1.2:
The first one will remove CWM if it is installed to your internal recovery, and the second will just restore the OS but leave CWM in place.
A lot of people in this thread also seem very unclear on what they've done to their NCs and what is the difference between rooting and installing a custom ROM, among other things. From my blog
When used as a verb, rooting means altering your current stock firmware to enable root, or superuser, access. Like having the Administrator account on a Windows PC, root allows you to change high-level settings such as those preventing you from installing unapproved apps, and accessing unapproved app markets. Rooting the NC maintains the stock interface, the stock reading app, and device-specific perks like in-store reading, but lets you install the Google and/or Amazon app markets, which have many more apps than the B&N market, often at lower prices. Apps purchased on those markets can also be installed on other Android devices.
If you basically like the NC's interface but would like a couple more apps, rooting may be your best option. The most common way to root the NC is ManualNooter.
Custom ROMs are volunteer-built operating systems that completely replace stock firmware when installed on a device. Virtually all custom ROMs have root access by default, and do not need to be rooted. Because we can boot from ɥSD, it's also not necessary for us to root before installing a custom ROM, as is necessary on many other Android devices.