There are two part to the complete Wipe of Nook Color which might be required by the users for several reasons. For example, a user might need to follow this whole procedure if he wants to upgrade to recent 1.2 firmware update from B&N or just simply wants to reset his Nook Color.
First part involves the re-imaging of the system partition (software update), while other part involves a procedure to clear the data to do a factory reset. Note that both steps are required to do a complete wipe.
Software Update (Step 1)
Step 1: Turn off your Nook Color if it is On.
Step 2: Turn it on by tapping the Power button.
Step 3: When you see the message “Welcome to the future of reading” appearing on screen, quickly hold the power button down to interrupt the boot process.
Step 4: If the boot animation on-screen does not appear, add a one (i.e. +1) to your interrupted boot count.
Step 5: If you see that boot animation appeared!, you need to reset the interrupted boot count is to zero and start all over again.
Step 6: Repeat from step 3 until your failed boot count reaches 8. At this point, the nook will re-flash its /system partition. You will see the process on the right.
If you have working adb installation your computer then you can go to where adb.exe is installed and type the following commands in the shell:
adb shell echo -n -e "\x08\x00\x00\x00" > /rom/devconf/BootCnt reboot
Factory Reset (Step 2)
Step 1: Make sure that Nook Color is powered off then hold down the n button (home) and Power Button until the NOOK Color turns on back.
Step 2: You will be prompted with a Factory Reset dialog.
– Press POWER key to Exit.
– Press HOME key to continue.
Step 3: Press n button (home).
Step 4: You will be prompted to confirm.
– Press POWER key to Exit
– Press HOME key to continue
Step 5: Press n button (home).
Step 6: You will see a Clearing Data dialog shows up. NOOK Color will reboot after the completion.
Note that for the factory reset alternatively you can also use the “Erase & Deregister Device” option in the “Device Info” of the “Device Settings” section.
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