[ROM] CyanogenMod 10 Nightly Builds for Nook Color

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Update April 22, 2013: Great news!

Yesterday, April 21, 2013, the CyanogenMod build system built its most recent (and possibly final) CyanogenMod 10 nightly for Nook Color. Why? Because the 10.1 builds are here! There's a whole new thread about it, so check it out.

If you'd like to try the (now legacy) April 21 build of 10.0, it is here:
md5: d6d6c7c6229bae992729db615984f2b8

Otherwise, if you're interested in stepping up to CyanogenMod 10.1, we'll see you over on the new thread!

__________________________________________________ __________________________________________________
__________________________________________________ __________________________________________________

NookieDevs 2012 Are Engorged with Pride While We Announce

CM10 Nightlies
for Nook Color (aka “encore”)
"CM10 for Nook Now Belongs To the Ages" Edition


That's right. Starting Nov 14, 2012, the official CyanogenMod servers are building a new fresh version of CM10 for encore every evening. This is a milestone in the development. Updates can also now be done automatically using the CyanogenMod Updater in the Settings.

Let's get to the good stuff:

Nightly Changes (starting 12/14/12)

* Here's what's new!

  • rare reports of high pitched noise on some hardware versions when coming out of sleep (but not confirmed)
  • adb w/usb seems to slow down when CPU is under load. To investigate, but not a show stopper.
  • Overclocking is not in yet
  • OTG not in yet
  • You tell us!

B5 Changes (11/12/12)
  • fixed the 600 mhz default for real this time
  • SmartReflex added (better battery life?)
  • way better touchscreen responsiveness (all salute Keyodi!)
  • kernel repository has been renamed
  • Updated to latest source of upstream CM10
  • security hardening

B4 Changes (11/8/12)
  • Updated to today's CM 10 upstream source
  • cpu clock defaults to 1ghz
  • a2dp (hopefully) fixed

B3 Changes: (11/6/12)
  • Updated to today's CM 10 upstream source
  • Updated wifi firmware to version that seems to fix networking and power issues
  • N-key wake is back
  • Fixed double-tap to wake device
  • power_hal changes
  • software menu key was fixed
  • possible SOD fixes for those having issues
  • More love was given.

B2 Changes (10/31/12):
  • "Sleep of death" on ES1.2 models- hopefully fixed
  • i2c commit that caused the black screen on boot has been pulled
  • the "n" to wake fix that caused ES1.2 SOD is gone too... sorry, but at least it fixed the black screen on boot issue
  • zram compressed memory added to kernel (see settings/performance)
  • bfq IO scheduler enabled in kernel (see settings/performance)

B1 Changes:
  • Based on latest CM10 source code as of 10/30/12
  • Netflix - works!
  • YouTube HD- works!
  • Passes Compatibility Test Suite for hardware (except for camera/GPS- wonder why?!)
  • Fixed "sleep of death" (SOD) on newer OMAP3 hardware model (ES1.1)
  • Charger detection issue is fixed
  • No sound on resume fixed (we think)
  • Updated PVR version
  • "N" button is now detected always see b2-- some models will need to use power button for now to wake the device
  • Fix to kernel to provide serial number
  • OpenGL now built in and works
  • CM "expanded desktop" feature turned on

Some notes:

Don't try to play ridiculously high 1080P h.264 video on this thing unless you like stuttering. There's a practical limit to what hardware from late 2010 can do.

That's it! Enjoy (as always, at your own risk and discretion)... and let us know what you think!

The NookieDev Team


UPDATE 10/19: SURVEY TIME!!!! Turns out there are a few models of Nook Color that need to be supported. Can you help debug?

Fill out this survey
to help narrow down issues. (More info here)


For a little more than a year now, the NookieDev team (comprised of a floating band of scoundrels and miscreants on XDA, Rootzwiki, Twitter, and other obscure corners of the Internet) has been laboring day and night to bring CyanogenMod 10 (based on Google’s Jellybean Android 4.1.2) to the Nook Color (aka “encore”) devices.

The port has involved overcoming numerous technical hurdles, the least of which was the need to move from a 2.6.32 kernel to a shiny new 3.0.8 kernel. Drivers were modified and (re)-written, large chunks of code from various kernels were backported, forward-ported bits were also shoehorned into place -- all using the open source 3.0.8 OMAP3 code base from Texas Instruments.

A new bootloader menu has also been written, then ported to the Nook Tablet. Improvements from the Tablet were then ported back to the Nook Color version, and over several iterations, the “Cyanoboot” bootloader got better and better. It’s pretty cool now, we think.

Over this past year, instructions for building from scratch were posted, and hundreds of users delved into the dark art of loading virtual machines, installing toolchains, downloading source, and assembling the new OS themselves. This experiment resulted in a new wave of contributors and testers, and we are grateful for their participation as well. The development forum has been full of reports of people building and testing CM10 themselves, but we have asked (and they have respected) that no binaries be posted so that developers, potential developers, and those-who-just-want-to-learn can be the first wave of "guinea pigs".

That brings us to today. Just in time for the BigAndroidBBQ, a gathering of Android developers and enthusiasts in Texas, we are pleased to announce that nightly builds are available -- at no charge -- for testing. If we may say so ourselves, this release is a triumph of the power of open source, collaboration, teamwork, and sharing knowledge for the betterment of everyone. If you’ve used CM7 -- or even one of the test versions of ICS -- on the encore device, you may want to back up your systems and give the nightly builds a try.


Understand that there are likely to be bugs, both known and unknown, and that all appropriate experimental-software disclaimers apply, including the fact that by using or attempting to use this software, you assume all risk for fooling with your hardware. We will not be held responsible for any potential loss of data, destruction of hardware, removal or disappearance of limbs, life, or coins in the couch. We do not claim this software is fit for any purpose, etc. Beware of Dragons.

This said, we do feel that the our work is finally “good enough” for interested people with a tolerance for risk to get their hands on.


It's an "alternative firmware" that can be used in place of the regular "stock" operating system. See the Wikipedia entry for more info.


Starting with the nightlies, yes it is.


It’s anticipated that some users may have not updated since CM7. So here’s a non-exhaustive list of changes:
  • based on recent CM10 version of Google Android 4.1.2 ("Jellybean")
  • based on the 3.0.8+ OMAP3 kernel
  • over-clocking (OC) above 1ghz is disabled for now. This is so we can rule out OC as causing bugs that may be reported. The 3.0.8 kernel is still in development, and OC will be available again later.
  • non-official CM10 source code has been moved to the NookieDevs account on the web site. (To get CM10 to work on the Nook Color,minor modifications were made to official CM10 source. So until those changes are adopted “upstream” into the CM10 source, we have made them available on the NookieDevs repository)


Pretty much everything, except where mentioned below, and where we just haven't noticed yet

  • See above announcement


These instructions assume you are familiar with replacing the firmware on your Nook Color and understand what a “recovery image”, such as ClockworkMod or TWRP2, is used for. If you are unfamiliar with these concepts, or have never replaced the stock firmware, don’t worry. Instructions and additional help are available across the Internet. A simple Google search should help you.

Note: We *STRONGLY* recommend a full data backup and factory reset when installing CM10, no matter what rom you were running previously. In fact, please do not post a bug report unless you did a full wipe.

To install CM10:
  1. (recommended) Boot into your recovery and make a nandroid backup of your current rom and data. This way anything goes wrong, you can always recover your original installation.
  2. Download the latest CM10 nightly .zip (and optionally the google apps from another source, as we are not distributing this software) and place it on your SD card.
  3. Again using your preferred recovery image, do a full wipe of the system as well as a factory reset (data wipe).
  4. Use the recovery to install the .zip (or .zips if you are also installing the Google apps).
  5. Reboot
  6. Enjoy!


Good news! You can make your very own free bootable CM10 SD card. It’s not hard, and we recommend you get a blank SD card and give it a shot before paying anyone else for a “pre-made” SD card. (If you don’t have a blank SD card, they can be found very inexpensively at most electronics retailers.) To do so, you will need leapinlar’s SD Installer here. It is a modification of verygreen’s famous SD installer, which was used with CM7.

This program will help you turn a CM10 .zip file into an image that can be flashed onto an external SD card.

Note: We strongly advise that you DO NOT overpay anyone for a pre-made SD card. If you have difficulty with making your own SD card, there are plenty of people online who can and will help you. There are unfortunately some unscrupulous people (aka “parasites”) taking advantage of their customers (aka “victims”) who don’t realize how easy it is to make their own SDs. Be wary of hucksters overcharging for this “service”.

We also ask that you please keep discussion of SD-card related install issues in the SD Installer thread referenced above.


Note: There is a special forum thread dedicated to CyanoBoot.

When you first boot, you’ll see an “EMMC” or “SD” in the top corner, depending on which you’ve started from. Then “01” refers to the “bootcount”, which is an internal counter that is cleared back to 0 when the boot is successful.

(You can usually ignore the “01”.)


CyanoBoot should auto-detect which forms of boot are possible (ie, you can’t boot off SD card if there’s no SD card installed!) and grey them out for you.


The build document for cm10 has been updated to reflect the newest instructions for building yourself. The build document is now a bit old and will be replaced soon... stay tuned.

Please keep all questions about building and developing on the [DEV] thread. This thread you are reading is intended for those who are using the nightly builds.


To quote myself:
  • You never, ever have to wait for a nightly
  • You can add or remove as-yet uncommitted features with ease.
  • You learn how Android works under the hood
  • You learn how to use Linux
  • You'll learn how to use git
  • You may, even accidentally, pick up a little C, Java, C++, and learn about the build system.
  • You can personalize Android-- make your own tweaks, replace kernels, modules, graphics, add or remove projects, overclock, underclock etc. In other words, you have control over every aspect of your device's functionality. Your build is custom to you.
  • You can audit the code for potential security issues such as back doors or trojans (as opposed to just trusting a random person who posts a build). Since CM10 source is open, you can examine every commit, and there are many eyes looking at the code. (does not apply to proprietary blobs, but these are pulled from your device, so you have and are using them already)
  • You can contribute features/fixes back upstream
  • You can start ports to other as-yet-unsupported devices (start by copying folders from similar devices to devices/manufacturer/model)
  • You come to really understand that Android phones and tablets are full-fledged general-purpose computers just like laptops and desktops.
  • get huge bragging rights

The extent to which you delve into the above is entirely up to you. The walkthrough is just an introduction to that world. Some people will build once and never do it again... but others will start to tinker and make changes to their own build and want to share them with others, and soon some will start making contributions back to official CM10 upstream... or port to new devices... and by fixing bugs and all this... everyone benefits.

  • It's fun.

(Here are some little bits that resulted from the nexus 7 thread quoted above.)


You have many, many options for seeking help!

See the Nook Color forum on to ask the community questions, please be mindful to post in the appropriate forum. General jellybean discussion and user help should be in the USER thread in the general forum - not in the development forum. If you think you have found a bug that hasn’t been reported yet, then post that in this thread.

You can also visit #nookcolor on IRC (freenode server) by clicking on:

Additionally, you may find more information about the Nook Color at as well as on Android-friendly blog sites such as liliputing, RevTV, and many more.


Great! We hate it when people post “hey guys.. *this* doesn’t work” and go on their merry way. Where possible, we may try to reproduce the bug. But sometimes, we can’t.

The best way to discuss an issue you are having is to include a “log cat”. A logcat is a special log that Android will give you using the “adb” program mentioned above that helps to determine what is going wrong and why. To include a logcat, simply download adb to your computer, connect your computer to the Nook Color with a USB cable, and then type “adb logcat” on your computer so that the log begins to scroll in the window. Copy and paste this log to a site such as, and post a link to the log when you are reporting the problem you are having.

You can read more about logcat and how to get one in this thread.


Every developer on this has their own motivation for participating in the project, but it’s pretty obvious money isn’t one of them. Some members of the team may have set up methods for making donations, but speaking overall, NookieDevs isn’t about money. It’s about the fun of hacking this amazingly versatile device.

BIG NOTICE FOR YOU NOT TO MISS: As mentioned, one place to NOT send money is any company that is overcharging for this free port. Many of these companies are, to say the least, douchey. These parasitic businesses may gouge their customers for free software without making it abundantly clear that they can easily download and install it themselves. How these scamsters sleep at night, we can only speculate -- probably on a pillow stuffed with cash.


Oooh boy, this is going to be a long list ... You can thank the "NookieDev" core folks, but you also need to thank the random people who stopped by, contributed some small thing, then disappeared. There’s also the developers that made CM7 possible (some of whom worked on CM10 too). Then there’s the forum moderators (inc. Divine Madcat, thanks!), upstream CM team, and their contributions on top of the Google code. Of course Google deserves big thanks, and so does Barnes and Noble and the subcontracted engineering team that made the NC, including the designers at Yves Beher’s fuseproject. Which certainly means we also owe Texas Instruments a huge debt of thanks, not only for making the OMAP devices, but for its world-class developer community support. And then there’s the people who developed the various languages, platforms, compilers, linkers, and coding practices that made Android possible... We can’t forget the Linux kernel coders... and it goes on and on. We’d like to give a special shout out to James Clerk Maxwell, who really doesn’t get enough credit in these “thanks” lists. Quick ups also go to Ada Lovelace, Alan Turing, Benjamin Franklin’s key maker, and the late Dennis Ritchie.

All that said, here are the more-or-less core members of the team.

fattire - @fat__tire on Twitter
krylon360 - @krylon360 on Twitter
eyeballer - @eye_baller on Twitter

Other people who have worked on related projects such as CM7 and CyanoBoot include dalingrin, verygreen, iomonster, nemith, cicadaman, deeper-blue, thedude, mad-murdock, j4mm3r, unforgiven512, scepterr, rebellos, ryands, kmobs, tonsofquestions, hashcode, arcee, hacdan, and many more.

The above are in no particular order, and as we say -- massive, necessary contributions have come from every corner of the Internet. As the inventor of the Fig Newton reminds us-- we all stand on the shoulders of giants.


There is an experimental version of CM10 available for Nook Tablet available in another thread. If you have a newer Nook, do not expect an alternative rom any time soon. The newer Nooks are expected, like the new Kindles, to have locked bootloaders.


Sure for now. Enjoy, and remember... if something screws up, don’t blame us!

(check this thread again for updates)


Want a nightly builds? Look here!

Download (beta 5):
MD5 Checksum: f22e826f637b57245250ca7aa9de147d

Download (beta 4):
MD5 Checksum: 45cd0b04c0f9c6bc4b3be684cebd4b22

Download (beta 3):
MD5 Checksum: cd6dadefa2087a005b5d47e758e7cf59

Download (beta 2):
MD5 Checksum: 9f0c6ca00c72ca944c2193dab1501dc1

(UPDATE: I appreciate the "thanks", but be sure to scroll down and thank the others too!)
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17th October 2012, 06:12 AM |#2  
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CM10 nightly mirror ( seems to be having issues)

Please make sure you're using the correct gapps:
Download gapps:

By default with the current gapps picasa sync will not be an option, if you would like to sync your photos with picasa then you'll need to also flash this (after you flash the full gapps package):
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17th October 2012, 06:13 AM |#3  
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Alpha1 Download
Download Link

Local Manifest used to build Beta1.

<?xml version="1.0" encoding="UTF-8"?>
      <remote fetch="git://" name="gh" />
      <project name="NookieDevs/android_device_bn_encore" path="device/bn/encore" remote="gh" revision="jellybean" />
      <project name="NookieDevs/ti-omap-encore-kernel3" path="kernel/bn/encore" remote="gh" revision="encore-omap3-3" />
      <project name="eyeballer/proprietary_vendor_bn" path="vendor/bn" remote="gh" revision="jellybean" />
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17th October 2012, 06:29 AM |#4  
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About Nook Color hardware revisions ...
In our efforts to debug problems people are seeing with our ROMs, we've encountered several different hardware revisions of the Nook Color floating around. We're not entirely sure how many different variants there are or what exactly the differences are, but it's very possible that these differences are relevant to bugs that only some people are seeing.

With that in mind, I'm looking to collect some data. If you could provide the following information from your device, whether or not you're experiencing a problem with CM10, it'd be very helpful. (I'll try to summarize the data received below as well, for reference.)

eyeballer has kindly set up a survey form for you to fill in, so that it's easier to sort through all the data: (if this doesn't work, try The instructions on how to get the requested information are in this post.

All of the lines below which look like

# command
are commands to be typed into a root shell, without the leading #. You can get a root shell in two ways: (1) connecting your tablet to a computer with adb installed and running "adb shell" from the computer, or (2) opening a terminal emulator on your tablet and typing in "su" (you may need to enable root access under Settings->Developer options first).
  • Motherboard serial number:
    # cat /rom/devconf/MainboardSN
    [you'll get a code starting with "QI", such as QI13M9H72ZY (my device)]
  • Manufacture date:
    # cat /rom/devconf/DateManufactured                             
    [you'll get a date in American MM/DD/YYYY format, like 03/26/2011]
    The motherboard SN and manufacturing date will help us establish when each variant might have been manufactured, and might eventually (with some luck) help us distinguish between variants.
  • CPU revision: The OMAP3621 chip at the heart of the Nook Color has gone through a handful of revisions to fix design defects (as nearly all CPUs do). We have to work around some of these defects in software when they're present, so it's helpful to know which variants are out there.

    # dmesg
    You will get a lot of output, but somewhere within the first 25 lines or so, you should find a line which looks like this:

    <6>OMAP3630 ES1.2 (l2cache iva sgx neon isp 192mhz_clk )
    (If you don't see it, reboot your Nook Color and try again -- if your device has been on for a while, older messages in the log will be dropped to make room for newer ones.) The code starting with "ES" is the revision number (1.0, 1.1, and 1.2 are documented).

    (Shortcut: if you don't feel like sorting through all the output, you can run (on the tablet)
    # dmesg | fgrep OMAP
    which should show you the line above without some of the other noise.)
  • Touchscreen type: We know of two different types of touchscreen controllers shipped with Nook Colors, the Cypress Semiconductor "cyttsp" controller and the FocalTech "ft5x06" controller. Both should work, but they use different drivers, which probably have different bugs.

    # dmesg
    Some considerable way down from where you saw the OMAP chip revision, you should find output from both touchscreen drivers trying to load:


    <6>cyttsp_init:Cypress TrueTouch(R) Standard Product
    <6>cyttsp_init:I2C Touchscreen Driver (Built Oct 8 2012 @ 04:18:16)
    <4>cyttsp:Reseting TMA340
    <4>cyttsp:Start Probe 1.2
    <4>cyttsp::found BL, Overriding maxx & maxy
    <6>cyttsp_initialize:cyttsp-i2c: Register input device
    <6>input: cyttsp-i2c as /devices/platform/omap/omap_i2c.2/i2c-2/2-0022/input/input2
    <6>cyttsp_initialize:Setting up interrupt 259
    <6>cyttsp_initialize:cyttsp_initialize: Create sysfs_group successfully!
    <4>cyttsp:Start Probe PASS
    <6>ft5x06_init() - FT I2C Touchscreen Driver (Built Oct 10 2012 @ 01:24:32)
    <3>can't get ft5x06 xreset GPIO

    Obviously, the driver for the chip you don't have will fail to load. (In this example, the ft5x06 driver fails to load, so I have a cyttsp touchscreen controller.)

    (Shortcut: You can also run
    # dmesg | fgrep ft5x06_probe
    You'll get a bunch of log messages if you have the ft5x06 touchscreen; if you have cyttsp, you'll get no output at all. Thanks to bowguy for the tip.)

What we know so far (we think):
  • About 75% of devices out there have OMAP36xx revision ES1.2, with the rest (so far, early-production models built January 2011 or earlier) having ES1.1. (Not all devices built in that timeframe have ES1.1 cores, though.)
  • The vast majority of devices have the cyttsp controller (present on devices built through at least mid-2011), but more recently built devices have the ft5x06 controller (also used in the Nook Tablet), as do some earlier builds which were later refurbished. Most of us who hack on the device have cyttsp touchscreens, so our kernel isn't as well-tested on ft5x06 devices -- feedback is much appreciated!
  • Motherboard serial numbers appear to all start with QI and are roughly sequential; no other structure seems apparent as of yet. There appear to be at least two different motherboards -- "QI", which most devices have, and "A6", from some devices made after mid-2011.
17th October 2012, 06:41 AM |#5  
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First non dev? Can't wait to flash this, great work fellas!
17th October 2012, 06:57 AM |#6  
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Fantastic guys! This is a big day in the life of Nookie...

I would install right now, BUT, is the download link correct? Doesn't look right, and gives an error.

Thanks to you all.

Sent from my ASUS Transformer Pad TF700T using xda premium
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17th October 2012, 07:14 AM |#7  
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thanks fellas, cant wait to flash this tonight and check out all the hard work thats gone into this.
17th October 2012, 07:19 AM |#8  
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Originally Posted by derekr

I would install right now, BUT, is the download link correct?

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17th October 2012, 07:22 AM |#9  
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Originally Posted by derekr

Fantastic guys! This is a big day in the life of Nookie...

I would install right now, BUT, is the download link correct? Doesn't look right, and gives an error.

Thanks to you all.

Sent from my ASUS Transformer Pad TF700T using xda premium

Originally Posted by -somebody-

thanks fellas, cant wait to flash this tonight and check out all the hard work thats gone into this.

Originally Posted by Butcher98

First non dev? Can't wait to flash this, great work fellas!

Link is fixed on Post 3
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17th October 2012, 08:45 AM |#10  
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Downloading. Can't wait to try it out. Thanks guys!
17th October 2012, 10:22 AM |#11  
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Flashed immediately. No problems at all so far. Very exciting! Thanks for putting this out!
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