How to use the (Linux) DD command to burn an image file to an SDCard.
This demonstration process will create a tool to UNBRICK your Nook Tablet. The process is completed using the Ubuntu Live USB Thumbdrive that I have shown you how to create. This allows Windows users to use Linux programs and commands without installing Linux to their computer. I have instructions for building the thumbdrive and for how to use the DD command.
See our instruction on How to create a LIVE Thumbdrive of Ubuntu
Alternate Windows Instructions for How To UN-Brick a Nook
NOTICE: The DD command is potentially very dangerous. That is why it requires Super User (SUDO) or administrator privilege in order to use it. Some old Unix people used to say that the “dd” stands for “Disk Destroyer” since you could, if you are not careful, destroy your computer’s hard disk contents! BEWARE!!
In Linux OS:
- Download the bn_142_factory_recovery.zip file here: http://d-h.st/5vJ from this XDA thread: http://forum.xda-developers.com/showthread.php?t=1663836 or here http://narod.ru/disk/49411891001.ac6…overy.zip.html (type the numbers in the box and hit the green button) from this XDA thread: http://forum.xda-developers.com/showthread.php?t=1562130
- Extract the repart.img from the zip you downloaded
- Micro SDCard. It should be a Sandisk, 1GB (or larger), Class 4 or Class 6 (other brands or class may work but Sandisk is more reliable as a boot device). The size does not matter but you cannot use the card for any other purpose unless it is re-formatted.
- USB to MicroSD Adapter. To attach the SDCard to your computer.
- USE GParted to determine the deviceID of the SDCard
- In TERMINAL:
- CD (Change Directory) to the location of the repart.img
- Issue command: “sudo dd if=repart.img of=/dev/sdc” (without the quotes)
In the SUDO DD command, the name of the image file and the “sdc” part of the command will differ according to your use & situation. However, it is generally very easy, using tools such as GParted.
- Remove the SDCard and label it
If you creatd the REPART file, be sure to LABEL the card with a WARNING! This card is DANGEROUS if misused!! An appropriate label might be: “Restore to STOCK!” It should be something significant so that no one will ACCIDENTALLY insert the card in a Nook and wipe out their configuration.
I have nstructions (How To UN-Brick a Nook) on how to use this Bootable MicroSD Card to clear a “Bricked” Nook Tablet (either 8GB or 16GB). The procedure will take less than 5 minutes.
The result of this procedure is to return your Nook to an entirely STOCK configuration. It will NOT be “rooted” or customized in any way. There should be no trace of any prior apps, ROMs, or other customization. According to which version of the repart.img you used, the userdata partition may be enlarged (or not) but this can be done at the B&N store as well – therefore, the Nook is still “stock.”
As always, your feedback is important. Please leave a comment and tell us what is good and/or bad about this guide & how it can be improved.