[Nook HD, HD+ Q&A, Help & Troubleshooting] doltran:
Going off of iamafanof . wordpress . com/2014/11/04/cm11-0-kitkat-android-4-4-4-for-bricked-no-emmc-nook-hd-04nov2014/

I've tried the build before this one on a PNY class 4, and I couldn't get it to work. PNY is just no good.

Sandisk class 4 works but it's slow as hell.

So I decided to give a Samsung EVO class 10 a try and so far it's working night and day better than the Sandisk class 4. I think I had tried it with a previous build, and it wasn't very stable...but so far so good on this build.

The directions on the web page check out...but can be a bit confusing, so I'll try and make it a little easier to follow (Windows 8).

1. Download utility tools if you don't have them already (SD card formatter [SDFormatter V4.0 ], image burner [Win32 Disk Imager], archive extractor). - Reboot computer if prompted -

2. Download the (3) Nook files at bottom of blog post (ROM, image, gapps)

3. Format your SD card (you should now see the full SD drive size as free minus the format overhead)

4. Extract the 512MB archived image file and use the image burner software to write it (the 1.84GB image file) to the SD card

- At this point you'll only see a small partition with around 240MB free on the SD card in windows -

5. Copy the 195MB ROM file (in zip format) to that ~240MB partition on the SD card

6. In Windows, open the "devconf" folder on the ~240MB partition, there should be two files in there.

7. In Windows, open the "MACaddress" file in notepad and change some of the numbers and save, so delete a '4' and replace it with a '6', etc. Make sure you don't add extra digits or delete any without substituting

8. In Windows, open the "DeviceID" file and do the same (substitute numbers with other numbers and save)

- At this point you'll only have around 40MB free, so you can't copy the gapps file and you'll have to put that off until later -

9. Make sure the Nook is off, insert SD card, turn on, press and hold 'n' at bootup when it tells you to and let go once it brings up the option menu

10. Press 'n' to enter "2) SDC RECOVERY"

11. Tap MOUNT

12. Tap BOOT so there's an 'x' in the box next to it

13. Tap the house icon on top

14. Tap INSTALL

15. Tap the icon to go up a level in the directory

16. Tap BOOT to enter that folder

17. Tap the ROM filename (the 195MB zip file you copied onto the SD card)

18. Swipe the bar at bottom to start installation

19. Tap REBOOT when prompted

20. Load the OS, go through prompts, go to settings, join your wifi network, open browser to make sure Internet is working

- I didn't have to do any of the other steps to change my MAC to get Internet working. (ymmv on that) -

21. Shut down and take SD card out

22. Open SD card drive in Windows, delete the 195MB ROM file, and copy the 110MB gapps zip file to the ~240MB partition

23. Repeat steps 9 through 19, except at step 17 select the gapps zip file

And Ta-Da! Android 4.4.4 working stable on a class 10 card for me. I've used some misc light apps, ES file explorer, and Chrome browser and Play store so far with no problems.

I would like to try Android 5 using this No EMMC method...if anyone has any info on that. I don't think the guy with the blog post is gonna do it at this point.