Dummies Guide to Fixing 'My Nook Won't Boot' - Nook Color General

First off, I need to address credit where credit is due. All credit goes out to Samuelhalff, Nootered, thecubed, iomonster, Decad3nce and anyone else involved with any of the methods I will mention.
As always, everything in this guide is completely at your own risk, I am not responsible for you messing up your device further nor am I responsible in the event that your Nook Color explodes and kills your cat, grandma, etc.
The Fatal Black Screen:
This is the issue where your Nook "refuses to boot up" usually after running Froyo (or possibly HC) off of your internal memory. This is usually caused by, but is not limited too, formatting your sdcard from within Froyo (or versions of HC prior to the flashable zip).
99.99% of the time, this does not mean your Nook is bricked in any way, what simply happened is your boot partition has become corrupted. For you newbies out there, the boot partition is what allows your Nook Color to turn on. The boot partition contains the instructions for what your Nook Color needs to do in order to start up and run.
The Fix:
Thanks to the guys that developed this neat toy, the Nook is set to boot from the sdcard before booting from the internal memory. What this means is, your nook will first search for a boot partition on the sdcard before searching for a boot partition on your Nook's internal memory. Because of this, we are able to boot and run OS software directly from the SDcard. This is how we will be fixing your "bricked" Nook Color.
First visit this link:
http://forum.xda-developers.com/showthread.php?t=922870
Download either the Rootpack, or the Clockwork Recovery image (1gb).
Next visit this link and download the 1.0.0 or 1.0.1 restore to stock files:
http://forum.xda-developers.com/showthread.php?t=914690
From this link you should also download the very last zip on the page. It is titled-flashable boot repartition zip. or something of the like. If you followed all these steps and still nothing, I would recommend flashing this as it can fix a completely screwed boot partition.
If you wish to instead restore to a pre-rooted 1.1, visit this link:
http://forum.xda-developers.com/showthread.php?t=932145
Once you have the either version of the bootable Clockwork Recovery (Rootpack or normal standard Clockwork Recovery) and a software version you would like to restore to, you must write your clockwork recovery to an sdcard to make it bootable in the Nook.
In order to do this, you must use Win32DiskImager on Windows or the command line on Mac and Linux. Follow theses instructions for writing the file to an sdcard (substitute the Clockwork file in place of Nooter):
http://nookdevs.com/NookColor_Rooting
Once the image is done writing, open up your sdcard on your computer and copy whichever restore to stock zip you choose earlier onto the card.
Now with your Nook Color unplugged from the computer, insert the sdcard and plug the Nook into the computer. Your screen should flash to life. After a short loading screen you will see a menu, using the volume keys, you are able to navigate up and down. Navigate down to the menu item that reads "mounts and storage." Navigate down and press "Format Data" then "Yes." Next do the same thing except format system. Using the power button to go back to a previous menu, return to the "mounts and storage" menu, make sure the sdcard is mounted. (If your sdcard is mounted, you will see the option to 'unmount /sdcard'. If it is not mounted you will see 'mount /sdcard'. In this case you would want to press the 'mount /sdcard' option in order to mount it. Again using the power button as the back button, navigate back to the main menu. You will see a menu item that reads "Install zip from sdcard." Select it. Now select 'choose zip from sdcard.' Now pick the zip you placed on the sdcard earlier. Scroll down to the 'Yes' option and select it. Clockwork Recovery will begin flashing the stock image to your internal memory. After a few minutes, the process should complete and you will see a message that says 'Done. Installation Complete.' From here you should remove your sdcard and navigate back to the main menu. Select the 'Reboot Now' option.
Note: Sometimes after you see the 'Done. Installation Complete.' message, Clockwork will freeze up and you will be unable to navigate back to the main menu in order to reboot. If this is the case do a hard reboot (hold the power button for 15 or so seconds so the screen turns off, then hold the power button again till it turns on).
Congratulations, you've unbricked your bricked Nook Color
TO EVERYONE STILL HAVING PROBLEMS AFTER THIS, YOU MAY/SHOULD FLASH SAMUELHALFF'S REPARTITION ZIP MENTIONED EARLIER. (LOOK UP A FEW LINES, SAME LINK AS THE 1.0.0 AND 1.0.1 RESTORE TO STOCK ZIPS)
UPDATE:
IF YOUR STILL HAVING PROBLEMS, USE THIS LINK TO INSTALL 3.0.1.0 ON INTERNAL EMMC AND THEN BOOT TO IT.
http://forum.xda-developers.com/showthread.php?t=958748
note: to do this, you need to be able to atleast boot to the N screen.
MORE UPDATE:
This link has an updated bootable CWM version on it with ext4 support. Write this to your sdcard, format /system and /data and flash CM7.
http://forum.xda-developers.com/showthread.php?t=959240
If anyone has anything to add to this tutorial, post here or IM me and I will edit the OP.

So I was doing the 'restore to stock' method earlier today and accidentely reformatted my boot partition is there a fix for this or am I completely hosed now?

bartimeus said:
So I was doing the 'restore to stock' method earlier today and accidentely reformatted my boot partition is there a fix for this or am I completely hosed now?
Click to expand...
Click to collapse
Not hosed at all, all you did was format the internal boot partition. When you insert the sdcard and turn the power on, your Nook will find the boot partition on the Clockwork Recovery sd card and boot to that, enabling you to do a full restore.

Well then there may be something more wrong with my nook. I have performed this 3 times and I am still just stuck at a blank black screen.

Are you sure you wrote the image to the sdcard right? Have you plugged in your nook and let it sit for a while? The Nook does have a pretty strange way of running its battery completely dead. What OS were you running before you went to restore to stock?

bartimeus said:
So I was doing the 'restore to stock' method earlier today and accidentely reformatted my boot partition is there a fix for this or am I completely hosed now?
Click to expand...
Click to collapse
Yes, it is totally effed. Just send me the nook, it's garbage now anyhow.

nootered said:
yes, it is totally effed. Just send me the nook, it's garbage now anyhow.
Click to expand...
Click to collapse
lmfao .

Oh dear god this just happened to me today. Thank you for posting this up.

nootered said:
Yes, it is totally effed. Just send me the nook, it's garbage now anyhow.
Click to expand...
Click to collapse
lolololololololololololol

Sorry. But if the boot partition is corrupt these files wont suffice. You'll need to flash my boot repartiton zip..
Sent from my HTC Desire using XDA App

Hi, thanks for putting this topic up and of course full credit goes to everyone who's been so helpful replying to bricked NC posts.
After 4 days of searching and trying to revive my bricked NC (tried the conventional 8 reboots, power+n methods), I believe I have a unique situation where I:
1) Can't load 128MB/1GB CWR SD ('loading' word appears, then black screen of death appears)
--tested a variation of power + n + up/down arrows (for 2-3mins or more)
--used PC USB / AC to turn device on
--used a Sandisk 256MB/2GB/4GB-CL4 and Transcend 8GB-CL6 uSDs
--used Win7, Ubuntu, EASEUS Partition Master, SD Formatter and another Android device to format the uSDs
--burned the .img using both Win32DiskImager and WinImage
2) Can't load any Froyo/HC SD roms (same results as above)
--same conditions as above
--plus tried every available version of NookieFroyo/HC out there
3) Can't access ADB at any given point. devmgmt.msc does not show any hardware with any VID of 2080. When the NC is powered on by USB, windows detects it and chimes, but that connection disconnects instantly.
Simply put, how it happened was:
OOBE -> BN 1.01 -> Autonooter -> block OTA -> Root + gApps > Rom Mgr'd CWR into eMMC -> HC v4 SD -> gApps -> manual su -> dalingrin's 1.1ghz oc kernel -> reboot success > checking on symlinks -> sudden auto-reboot to stock -> reboot done -> HC loads ok -> blacks out, unable to reboot anymore.
Has anyone else encountered this scenario? In my searches I've not come across anyone with this failure. Is it possible that my CPU has fried due to the OC to 1.1?
P.S. Sam, not able to try your methods as I'm not able to even boot anything from the SD.

I'mm in the same boat (nook) tried everything here as well as a similar guide on androidtablets and nothing. I can't boot at all. No power on, just a black screen. Any help at all would be welcome.

samuelhalff said:
Sorry. But if the boot partition is corrupt these files wont suffice. You'll need to flash my boot repartiton zip..
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
Ya, I realized that I forgot that, I'll add it in when I get home today, Thanks.

I flashed the 1.1 CWR image and all is fine now.

RileyGrant said:
Ya, I realized that I forgot that, I'll add it in when I get home today, Thanks.
Click to expand...
Click to collapse
The second link in your original post has a link to it as part of step 5.

It took a couple times of me re-writing the CWR image before I could get it to boot. Now I have it booting into CWR but when I flash the 1.0.1 recovery the nook refuses to boot. Any ideas?
edit: I am removing the micro SD before I reboot
edit 2: sam's repartition boot FTW....I think

LocalStain said:
I'mm in the same boat (nook) tried everything here as well as a similar guide on androidtablets and nothing. I can't boot at all. No power on, just a black screen. Any help at all would be welcome.
Click to expand...
Click to collapse
Glad you found this, it was my next recommendation after the charge break.
Sent from my LogicPD Zoom2 using Tapatalk

How about a dummies guide to the dummies guide for the dummies?
Or, better, WTF! ITS BRICKED!
Already did all the things suggested. Twice. Purchased last Nook Color from Best Buy yesterday, brought it home, charged it to 100%, played with it and ran Auto-Nooter 2.12.25. When I plugged in the cable to boot, it came up with the battery low-wait 15min screen. (Battery was at 100%) Tried again, same thing. Re-flashed Auto-Nooter and tried again, black screen. Nothing. Bricked. What I do get is a black screen with a flash of backlight every 20 seconds or so. Tried to re flash Auto-Nooter and boot, nothing.
Today same story, just wasted 5 hours trying: Auto-Nooter, Clockwork Recovery image, Nookie-Froyo, complete restore-1.0.1.......nothing brings up any life in the nook.
Suggestions? (Ready to return......)

Cant boot to SD
I am running the HC v4 flashed rom and I have tried numerous .img files. It is like it doest see the boot image I just created and boots into Honeycomb everytime? Any thoughts or help please sorry I am a noob.

< snip >
RileyGrant said:
Clockwork Recovery will begin flashing the stock image to your internal memory. After a few minutes, the process should complete and you will see a message that says 'Done. Installation Complete.' From here you should remove your sdcard and navigate back to the main menu. Select the 'Reboot Now' option.
Click to expand...
Click to collapse
< /snip >
After spending the better part of four hours trying to solve a fatal error with my reverted-to-stock NC, I ran across the fix for the problem.
First of all, the problem: After diagnosing a bad NC USB cable that was causing USB device mounting issues within Windows, I began to encounter a fatal error modal dialog that stated, "Your NOOKcolor encountered a problem that requires a system restart" at the home screen. No matter what I did in terms of formatting & re-imaging, the message remained. In an effort to fix it, I decided to restore to stock 1.1 using a bootable CWR SD image. After following the instructions to the letter, including formatting /System and /Data after shooting the stock 1.1 image onto the NC, the message persisted. I then attempted to back-rev to 1.01 and 1.0, with similar results.
I suspect that what happened to me was that during the process of diagnosing the USB cable issues, I booted from a uSD card that had AutoNooter 3.0 on it, and interrupted the process mid-stream, thus causing data or partition corruption. I'm not a Nook expert, so I'm not certain of this, but based on my general experience level, that's what it 'felt' like.
How did I finally recover? As a last step to the standard revert-to-stock process, after rebooting from CWR, I used a three-finger salute to reset the device. It was only after I did this that the fatal error disappeared.
Just thought that I'd post this in case anyone has a similar experience and is desperate for something else to try.
DS

Related

[Q] My NC lasted all of one day.

Well day one is over and I think I might have the first bricked NC. I used CWR to flash this ROM:
http://forum.xda-developers.com/showthread.php?t=932211
I kept getting a keyboard input error and it never worked correctly. I've been reading nonstop through the forum and now my NC won't turn on.
I look through the thread again, only to find out that it is locked and in red letters it now says "just keep away from the SDcard formatting option in settings." Anyone want to guess what I did before I read that? Yup, I formatted the SD card through settings.
It says to use a certain file to flash boot again but I have no idea how to do that if the thing won't even turn on. Does anyone have any suggestions? I can't post in the thread because it is locked.
MY NOOK IS ALIVE AGAIN!!!!!!!!
Not sure what all I did but it's up and running again. I started with the partition file mentioned in the closed thread. I then did a full restore to 1.0. This then lead me to a boot loop with the grey N screen. From there I re-rooted and it almost loaded. After that I did the power +N button and it reinstalled 1.0 for me. I have since rooted the NC and am leaving it as is until Cyanogen comes out with their ROM.
you made a big mistake by starting off with that flash to emmc rom. You should have started with rooting the original firmware.
Try this to get back to stock.http://forum.xda-developers.com/showthread.php?t=931720
If this doesnt work use my fool proof guide here:
Code:
http://mrm3.net/2011/01/24/113/
I rooted the NC using Huskermania's video on YouTube. I should have left well enough alone but seeing all the videos of 2.2, I wanted it as well.
Thanks you for the link. I plan to follow every step later in the day, after get some rest and relieve some stress. My only worry is, will the Nook turn on after I pop in the SD card and how long do I hold the power button before I give up?
I'm familiar with rooting and flashing phones, I am currently running CM-6.1 on an Evo and a Hero without any problems. Before that I messed with everything from the PPC-6601 to the TREO 800W.
try this:
http://forum.xda-developers.com/showpost.php?p=10965703&postcount=31
maybe it's like the root sd and you just need to let it run without any on screen indicators. you could pm him and see if he can offer any help.
good luck.
So I've read through everything and when I installed the SDK I had issues with my PC and getting the drivers to load. I didn't install them and went straight to flashing it, so no matter which guide I followed the driver install failed.
I'm now on a Mac and I'm installing the SDK. Any advice on how to take me from step #11 and on.? I can't seem to be able to find the Windows button fo some reason.
hi -- assuming you still need help, this CWR bootable SD saved me many times.
download this file (I think you may already have it)
http://dl.dropbox.com/u/2248236/froyo-eMMC-0.2.img
so open terminal in your mac and insert the microSD card into an sdcardreader or adapter. If you want to be extra safe open Disk Utility in the Utilities folder in Applications and erase the SD card.
then in terminal:
$ diskutil list
(figure out which /dev/disk# is the sd card)
$ diskutil unmountDisk /dev/disk#
$ dd if=/path/to/that/img/file/froyo-eMMC-0.2.img of=/dev/disk# bs=1m
(then wait an inordinate amount of time when terminal won't tell you anything and you think it is not doing anything... for it to image the sd card)
when it is done, it will tell you XXXXXX files in 0 files out
remove that SD from your computer and put it back in -- it should show up in finder as "Boot" and check to make sure a "restore to 1.0.1 zip" is on it -- if not, let me know, and I'll link you that file as well. You can just copy over that zip to the newly imaged SD card if it isn't there.
once you've got that SD card imaged with the complete-restore-1.0.1.zip on it as well, make sure your nook is unplugged and powered off -- I assume, just hold down the power button for like 10 seconds just to be safe. Put the microSD into the microSD slot and plug the nook into the computer -- that tells it to boot from SD.
you should enter Clockworkrecovery at which point you need to navigate the program with the vol up vol down power and home buttons (power is back, home is select) and go to the mount option and reformat system, then data, then boot. It always freezes on me after reformatting boot, so just power off and back on and it should return to CWM. Then go through the steps to flash that recovery zip that is on the sd card! Make sure you select "select zip from SD card" and you should be good to go.
good luck.

autonooter 3 fails

I went to update to use autonooter 3.0.0 with nook 1.1.0 software. I went through the process of installing the autonooter 3 and it booted up with the Android splash screen but it kept replaying the android sequence (spelling android) and it would keep restarting sometimes not getting through the entire spelling of android.
I went to reset to factory defaults and now it constantly reboots after "installing a new software update is being installed..." completes. Autonooter no longer boots it justs sits blank forever.
Please help!
hmmm...
Autonooter seemed to work for me. I just had to make sure that I was on stock 1.1 and it worked.
Try to obtain another microSD card. A 1GB will work just fine for the Autonook img.
Also, I would download another copy of the image. What you are going through seems to be a bad image either burned to the microSD or from the source.
Just my 2 cents.
I am sure that it works but for some reason I seem to be in some exception case and I need input how to get out of this mode. My nook is essentially bricked right now.
Have you tried to restore to stock using these instructions?
http://nookdevs.com/Flash_back_to_clean_stock_ROM
I could not get the 8 times failed boot to happen, no matter what the nook boot always happens, I could not get ADB to recognize the device to for the failed boot, I tried the new SD card and image. I give up. I bought it from BN last week so I will just exchange it. thanks for the help.
I have the same issue. The Nook loops the boot screen. The first time it gets through the boot animation afterwards it stops at AND then it pukes. I'm going to try taking it back to stock.
To all of you stuck in this boot loop use my guide posted here to return to stock.
It even includes the link to decadences pre-rooted 1.1 so you can use that instead of flashing back to stock 1.0 or 1.0.1. Good luck and have fun!
Note: Make sure to format /data /system and probably /boot if you are going to flash one of these. Its always best to start from a clean build.
Try the CWR bootable SD...?
quickwitt said:
I have the same issue. The Nook loops the boot screen. The first time it gets through the boot animation afterwards it stops at AND then it pukes. I'm going to try taking it back to stock.
Click to expand...
Click to collapse
Try this... if you have 2 SD cards...
1) Download iMonster's bootable CWR image... (1GB card should be plenty)
2) Download the stock kernel/image from XDA forums and copy onto card #2
3) Using the bootable imaged SD, hold the "n" + power to boot up... you should see two crossbone/skulls image and in-between them, the words "loading"
4) Once it boots into CWR, go to "install from sd"
5) Select the stock image from the SD card...
It should boot back up into stock. Then try the nooter again... try to re-download the file, re-image, and start process over.
Out of curiosity... did you get your nook before or after the who "temporary pulling off of the shelves" incident? I'm wondering if these devices have been reworked at their factory? I know there have been articles that mention that this is just a rumor... BUT you never know.
I used winimage to write the 1.1 image here to an sd card
http://forum.xda-developers.com/showthread.php?t=945838
Put the sd card in the Nook and rebooted. It booted into CWR, I followed the onscreen instructions and now I'm back to stock 1.1.
Reflashed Nooter 3.0.
Back in business.
hvuong2 said:
Try this... if you have 2 SD cards...
1) Download iMonster's bootable CWR image... (1GB card should be plenty)
2) Download the stock kernel/image from XDA forums and copy onto card #2
3) Using the bootable imaged SD, hold the "n" + power to boot up... you should see two crossbone/skulls image and in-between them, the words "loading"
4) Once it boots into CWR, go to "install from sd"
5) Select the stock image from the SD card...
It should boot back up into stock. Then try the nooter again... try to re-download the file, re-image, and start process over.
Out of curiosity... did you get your nook before or after the who "temporary pulling off of the shelves" incident? I'm wondering if these devices have been reworked at their factory? I know there have been articles that mention that this is just a rumor... BUT you never know.
Click to expand...
Click to collapse
I think the "pulling off the shelves" is a myth but I purchased my nook the 1st week of January. I've loaded every version of Autonooter as well as Froyo and Honeycomb without incident until now. I'm sure I screwed something up in the process or just had a bad write to the sd. I'm pleased that you can't really brick this great little tablet.

Nook Won't Boot After Formatting SD Card

My Boot will not boot no matter what I do. I encountered this issue after flashing to phiremod v4, which worked beautifully until I decided to free up some storage space on my SD card and format it through the Nook. The next time I tried to boot, I got the dreaded black screen.
I've burned Clockwork Recovery (4gb v .7) onto the SD card and copied the Nook Color V1.1.0_r2 rom (found here http://forum.xda-developers.com/showthread.php?t=932145). From there, I formatted the data, system, and cache, then installed the rom from the SD card. Everything went through smoothly, until I rebooted the Nook (with the SD card out). Nothing happens! The Nook simply will not reboot without the SD card inserted. Even if it boots (with the SD card) it just sends me back to Clockwork Recovery.
I also tried recovering the Nook through ADB (using the steps found here http://mrm3.net/2011/01/24/113/). I install everything, but I cannot locate the ADB device in the device manager. I've even used the .bat file to auto installs ADB, but it is still not found in the device manager.
I've read that it is nearly impossible to brick a Nook, but I'm not sure what else to try. I'm a Android noob, so please bear with me. TIA!
Fairly certain I read about a bug with formatting the SD card on the NC, that it would format the internal memory instead. I would imagine you will need to flash a new image to the internal memory (should be stock image floating around here somewhere).
No worries, you are most likely NOT bricked. There are hundreds of posts about people thinking they bricked their device.
First thing is first, IF YOU READ THE POST IT SPECIFICALLY STATES DO NOT FORMAT THE SDCARD USING THE NOOK AS IT WIPES THE /BOOT
My suggestion to you is do some research on XDA there are PLENTY of posts about "unbricking" your device.
I have only seen 1 nook be bricked, and it was hardly bricked because it could be booted from an SDCard.
Try following the instructions here to return back to the stock OS:
http://nookdevs.com/Flash_back_to_clean_stock_ROM
Reneg4d3 said:
No worries, you are most likely NOT bricked. There are hundreds of posts about people thinking they bricked their device.
First thing is first, IF YOU READ THE POST IT SPECIFICALLY STATES DO NOT FORMAT THE SDCARD USING THE NOOK AS IT WIPES THE /BOOT
My suggestion to you is do some research on XDA there are PLENTY of posts about "unbricking" your device.
I have only seen 1 nook be bricked, and it was hardly bricked because it could be booted from an SDCard.
Try following the instructions here to return back to the stock OS:
http://nookdevs.com/Flash_back_to_clean_stock_ROM
Click to expand...
Click to collapse
Yeah, I realize that was a big no no. I am unable to perform any of the steps in the link you provided because my nook doesn't even reach the 'Welcome to the future of reading' screen. Also, I can't try method 2 because ADP is not working properly.
I should mention that I also tried samuelhalff's first method to no avail. Any other ideas?
So you CAN boot from an SDCard correct? Only way to boot again is to flash the boot file...
Reneg4d3 said:
So you CAN boot from an SDCard correct? Only way to boot again is to flash the boot file...
Click to expand...
Click to collapse
Yes, I can boot (to Clockwork Recovery) if the SD card is inserted and the power cord is inserted and I hold the power button for 10 seconds. If I install a rom from the SD card, doesn't it flash the boot file? If not, how do I flash the boot file?
I know you said you tried Sams method, I would re-read how to flash his boot repartition file found on his froyo on emmc thread
thadeus_d3 said:
Yes, I can boot (to Clockwork Recovery) if the SD card is inserted and the power cord is inserted and I hold the power button for 10 seconds. If I install a rom from the SD card, doesn't it flash the boot file? If not, how do I flash the boot file?
Click to expand...
Click to collapse
Here's the link to the boot file. I did the same thing not long ago (formatted SD from within CM7) and I fixed it by flashing this file to repartition the boot.
It's the last link in the OP of this thread (repartition-boot-with-stock.zip):
http://forum.xda-developers.com/showthread.php?t=914690
If that doesn't work, he has a couple of restore to stock methods in that thread as well.
C Dippa said:
Here's the link to the boot file. I did the same thing not long ago (formatted SD from within CM7) and I fixed it by flashing this file to repartition the boot.
It's the last link in the OP of this thread (repartition-boot-with-stock.zip):
http://forum.xda-developers.com/showthread.php?t=914690
If that doesn't work, he has a couple of restore to stock methods in that thread as well.
Click to expand...
Click to collapse
YES! This did it! I missed this link somehow. Many thanks to all that helped.
Ok, now I'm stuck on the screen that says "Contains Reader Mobile technology by Adobe Systems Incorporated". Did this happen to you C Dippa? I'm going to try a reset and see if that helps.
thadeus_d3 said:
Ok, now I'm stuck on the screen that says "Contains Reader Mobile technology by Adobe Systems Incorporated". Did this happen to you C Dippa? I'm going to try a reset and see if that helps.
Click to expand...
Click to collapse
Nope...it just booted up, may have taken a little longer.
Any luck with it?
Yeah, I had to do the 8 failed boot attempts to bypass that screen, then re-root. Now, I'm all set! Phiremod is installed again.
Glad to have helped! Happy nooting!
Sent from my Droid using Tapatalk

[Q] Nook Color Won't Boot-Been trying stuff

I have a Nook Color that was running the Cyanogenmod nightlies. After shutting it down, it would not boot again.
Since it still boots into recovery, I tried reflashing cyanogenmod, a recovery zipp that was supposed to restore the boot partition, dding boot.img and system.img to the internal memory, a total wipe of every partition, flashing with the latest version of clockwork, along with .7, the stuff mentioned here http://forum.xda-developers.com/showthread.php?t=949699, and flashing "nook color return to stock".
Although all flashes completed successfully, the device still won't boot without the sd card. Is there a method I'm missing?
Been in the same boat myself as well as many others. I found that to get it to boot correctly again do this. Use this link (http://forum.xda-developers.com/showthread.php?t=914690) and downlaod the "Remove CWR" file, you'll also want to download the repartition-boot-with-stock.zip which is the last link in the OP right under the Remove CWR link. Once you download each file copy them to a bootable sdcard. Then pop the bootable card into the nook and power it up to into CWR off the sdcard. After that install the Remove CWR zip first, then follow up by installing the repartition-boot-with-stock.zip. Once all is said and done power the Nook off by holding the power button in. take the sdcard out and then power it on. Odds are it will get stuck again but you should be stuck on the N screen. If so power it off and then put your bootable sdcard back in the device so you can start fresh reinstalling CM7 & gapps.
If you repartition boot, cwr will be removed in the process. No need for the second file..
Sent from my HTC Desire using XDA App
samuelhalff said:
If you repartition boot, cwr will be removed in the process. No need for the second file..
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
In theory it should and you are totally right on but I've personally seen it where even after repartitioning the boot it still will not boot correctly for whatever reason. That said personally I've found it just as easy to take the extra step to make sure it gets cleared up as it takes a matter of a couple extra seconds to do it.
Thanks, I'll try that.
Followed instructions exactly, but the thing still won't boot. I must have F'd up my /boot partition pretty badly.
Edit: Wiped every single partition and cache, then flashed, now it works. Thanks guys
I am having this same problem and have a question about the options to fix it. I have CM7 stable on my NC and it worked untill I formatted the SD card and rebooted.. now it just gets stuck at "touch the future of reading" screen.
Is it possible to remove CWM without harming the CM7 install? and still be able to boot to CM7?

[Q] Can't get 1.4.1 upgrade to work

I always end up with little green android next to a triangle with an exclamation point in it. CMR reports: failed to verify whole-file signature. signature verification failed. installation aborted.
I have re-downloaded the file 6 times, attempted the process at least 10 times.
Contacted B&N chat support and they could not help, finally suggesting I take the NC to one of their stores. The NC is pure stock. I run CM7 from an sd card.
Any ideas??
I also run cm7 from sd, and what I found out when 1.3 came out is that some form of CWR was written to my EMMC...which prevented the update to the stock os.
I found this video, did it all, and everything worked great, i now am running 1.4.1 perfectly; and cm7 still runs off sd...woot!
http://www.youtube.com/watch?v=szlGSBtWbKY
Hope it works for you!
Yoke
ps. After you restore, just plug in your usb cable and drop 1.4 to the root directory, let it sleep, and it should update right away...
It appears there are some remnants of CWM left on mine as mentioned above.
I have a hearing impairment problem and am unable to follow the sound on the video. Does anyone have the instructions written down? i would really appreciate if you would post it.
I'll try....
Goto the video link above, and below the video in the text describing it, you will see 4 links to files you will need. Click on each one, and save them to a known location.
Basically, you need to create a Bootable SD card that has just the Clockwork files on it.
You use the 7-zip program to extract the Clockwork Recovery file.
Insert microSD card to your computer...
Then run the Win32DiskImager program..using the browse button (...), point it to your extracted Clockwork Recovery file, make sure your SD card is the destination..Click 'write'...it will take 5-15minutes to finish.
When that is finished, you can close Win32DiskImager, then open your SD card and drag the Nook Color Restore File you downloaded earlier onto the SD Card.
Now that you have CWR and the Restore file on your SD...put it into your powered off Nook Color and power on! The screen should say "loading" with two skulls on each side...this is CWR.
From the main menu...scroll down to "mounts and storage". You use the Vol +\- keys for this..the "N" button is the 'select' button.
Scroll to "Format System" and select...scroll to "yes" and select..
Scroll to "Format Data" and select..select "yes"
Scroll to "format Cache"..ect...
Scroll to "format boot"...After boot, it will freeze up (normal) just press and hold power till it shuts down, then press and hold power again to reboot....
Scroll to "install zip from SD card" and select ...
scroll to "choose zip from sd card" and select...your recovery zip should be listed...select it...
After it runs through the update, remove the SD card, go back to main menu and select Reboot (the Power button is used as a 'back' button)
It should boot up into Stock, run through registration, then hook it up via the USB cable to your computer and drop the new 1.4.1 file on it...let it sleep, and boom..you should be good to go.
Hope this helps..
Yoke
Thank You so much! All is well now.
Glad I could help....
I certainly don't have a lot of experience, and searching this forum can be daunting with all of the fragmented threads. Maybe this thread will help some others too.
Yoke
worked like a charm, thanks!
Az
Just want to make sure I have all the info. My Nook has 1.2 on it and I want to upgrade to 1.4. I have been booting off of a SD that has [ROM][CM7] [v1.3] Size-agnostic SD Card image and CM7 on it. I can't install 1.4 now because CWR seems to be getting in the way. To fix this, I need wipe the Nook and install the software on it again using the above information? This will take the Nook back to a stock install 1.0.1. I then can update the Nook software to 1.4.1. I will then need to setup my Nook again as if it was new and redownload all of the Books, Apps, Mag, ect... that I had been using?
If this is the case, is there a chance on losing old books, ect... if they are no longer available from BN? Can I back up this information before starting this process?
Once I'm back up and running this my old stuff redownloaded and updated to 1.4.1 I can then put my old CM7 SD card back in and boot off of it and everything should work?
One last question, I only have a 32GB microSD card and there is not an option for a 32GB download of the CWR. Do I need to go by a different one to be able to do this or can I make my 32GB one work somehow? Thanks.
The size of the image should not matter... I would try the smallest (1 GB) version. The rest of the SD card will just sit empty. This way the image is written much faster .
ROM Updating only needs around 70 MB (for CM7.1), so 1 GB is plenty.

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