Original Nook Softroot Guide

originally published by NookDevs.com

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Features:

ADB over USB.

NookLibrary 0.1.0 - Allows for better organization of sideloaded books with enhanced sorting abilities.

NookBrowser 0.0.9 - Predates the official browser, some different functionality.

NookFileManager 0.0.2 - Allows you to deal with filesystem operations without needing ADB.

Nooklets (rev:3) - Allows for mini javascript/web games to be easily made for the nook.

Trook (rev:68) - RSS Reader, Allows syncing with Calibre

mynook.ru Launcher - This allows for 3rd party applications to be installed and executed.

Non-Market App Fixes - The Android system was modified to allow non-market apps to be install/upgraded

Helper Scripts - A minimal amount of helper scripts have been written to help with Softroot/ROM upgrades.

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Prerequisites:

You need a B&N nook (with battery charged to at least 20%, preferably fully charged).

This nook must not have a serial number starting with 1003 or higher.

You need a 128MB-or-higher microSD card with a single, FAT32-formatted partition.

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Steps

Skip to Step #4 if you're already using a rooted nook.

1. Download the official 1.0.0 signed update here:

https://mega.co.nz/#!dsAEQLhK!7iOn999V9FtvrkpkNvvyYn78UqiFF1RvWv6bLtZkaPs

SHA1SUM: 84287D73B70E98DA6A6AF9F362B31E96D4E6EEA4

Barnes and Noble has likely introduced a new hardware revision which bricks your unit if you install their official 1.0.0 Firmware (A step needed to root). As of right now, Nooks with serial #s starting with 1003 AND HIGHER (running firmware 1.4.1) cannot be rooted using this method, and should NOT be attempted.

2. Copy 1.0.0 signed update to your nook's internal SDcard (should be named NOOK)

3. Go to the home screen, your e-ink screen will have a notification saying it's reading the update, your nook will reboot by itself and 1.0.0 will install to your nook.

4. Download the NookDevs.com (perfinion's) 2.5.1 (B&N:1.5.0) Softroot/ROM download

https://mega.co.nz/#!AogHhDYK!cP1p87GpZO1uqGQerSmndwyFSdx0hNNst_6oPgmIiXg

SHA1SUM: 438D387126530E08DE896BB4A4A25E2F2725F430

5. Copy the NookDevs.com 2.5.1 Softroot/ROM to your external SDcard (The one that isn't named NOOK). And change its name to "bravo_update.dat".

6. Hold the power until your e-ink screen goes off.

7. Press and hold the "<" button on the right side of the nook, and then press and release the power button, while continuing to hold the "<" button.

8. You can release "<" once a screen appears indicating that your device is updating. Wait through the entire process and when you see a launcher screen, reboot once more.

9. After your nook boots, hold the touchscreen portion down to pull up the launcher menu. You can click "+" to add apps to the main screen here.