Updating your nook
interestingly, there are not as many Sites talking about rooting the Nook Color typically advise installing a new Android operating system (ROM) on the device.
These ROMS are usually custom built for the Nook Color, based on some variant of I recently dusted off the Nook Simple Touch and decided to try some of the root options, mostly to get the Kindle app working.
With the img file unzipped, you’ll need to write it to a micro SD card.
(Again, you can buy these cards and USB adapters for them to plug into your PC very cheaply these days.) The way I wrote the img file to the card, and the way discussed in the tutorial I linked to above, is to use a free program called win32 disk imager.
There are terrific resources out there on installing Android on a Nook HD , though it can be hard to find everything in one place.
Let me post the most user-friendly one, here: Installing Android 5.1 on a Nook HD It’s what got me started and is a wonderful resource, though as the title indicates, it’s for Android 5.1 and not 7.
Once the device has a full battery, turn it off, insert your micro SD card and turn it on.
By all means explore that option if you like, but for me it’s easier to get a clean slate and the general consensus is that it’s the simplest way forward.They’re curated from various Android forums, and are: to a temporary folder on your hard drive with any unzip program you like, 7-Zip or Win Rar or take your pick.Note that the file extracts from 7.5 MB to a ‘img’ file 900 MB in size– that’s some serious compression, so make sure you have room on your hard drive. It’s the bootloader we’re going to use to start the Android tablet with and get the ball rolling.This blog post is for people who want to move their Nook HD device to Android 7 quickly and with as little fuss as possible.In a couple of paragraphs I’ll show you how to do this, but I’d be remiss if I didn’t first mention a couple of resources that helped me.