[Q] "Loading EMMC" goes to black screen - Barnes & Noble Nook Tablet

Help! I just got CM 10.21 emmc running on my 8 GB NT and was becoming familiar with the system. I installed AdAway and after setting it up allowed it to reboot. Mistake!
This is the first time I've rebooted or turned off since the ROM flashing. I get the "N" screen, then an unnerving flash, followed by the Cyanoboot universal bootloader screen and it says "Loading (EMMC)...". Then all goes black :crying:
There is still backlighting and holding the power button will eventually extinguish it. Plugging the tablet into the charger (or the PC) has no effect (off or on).
It did the flashing according to this thread and everything went as described. The tablet has behaved flawlessly until this. I could theoretically recover to stock and start over again but if there is a way to fix this, I'd rather.
EDIT: Update. I tried booting with the CWM SD card that holds the recovery files as well as the files used to flash the CM 10.21 ROM. I get a red bar message that says "booti: bad boot image magic (in memory)". Underthat is "(SDC) LOADING BOOT...." and it's just stuck on that screen.
EDIT2: Solved itself eventually after a number of attempts. Really freaky behavior.

Related

[Q] Bricked G-Tab?

Could I have bricked my tablet? Or could there be a way to recover?
As for what it's current state is; (I am sure is is stuck in the reboot loop) When powering on the tablet, it displays "Android", goes dark, and repeats. Though this is a change from when I was trying to fix it on my own. Before it looping, it would show the "Android" screen and just sit there.
No comes what I think the REAL issue is... Running 'ClockworkMod v2.5.1.1-bekit-0.8', I am unable to mount an external SDcard or mount the USB Storage(text in menu implies to me it is the USB cable to computer).
So other than the images already on the tablet, I seem to be unable to get a new image into it. And of course the images on it don't do any good.
Tech1381 said:
Could I have bricked my tablet? Or could there be a way to recover?
As for what it's current state is; (I am sure is is stuck in the reboot loop) When powering on the tablet, it displays "Android", goes dark, and repeats. Though this is a change from when I was trying to fix it on my own. Before it looping, it would show the "Android" screen and just sit there.
No comes what I think the REAL issue is... Running 'ClockworkMod v2.5.1.1-bekit-0.8', I am unable to mount an external SDcard or mount the USB Storage(text in menu implies to me it is the USB cable to computer).
So other than the images already on the tablet, I seem to be unable to get a new image into it. And of course the images on it don't do any good.
Click to expand...
Click to collapse
Most definitely not bricked. I've recovered from a much worse situation (bootloader wouldn't even budge - couldn't boot into recovery or regular at all).
Since you are able to boot into recovery, there's probably a way to get things working without resorting to nvflash (we'll get to that in a second - nvflash is the failsafe mechanism, and you should be able to re-nvflash your tablet back to its original state if all else fails).
Here's roughly what I'd try in order:
Option 1) Figure out why you are unable to mount as USB in recovery. I've actually never heard of this problem. Are you using the right cable - i.e. a working USB-to-mini-USB cable (I don't think this works at all with the full sized USB port under the latch cover). Have you tried it with another computer - perhaps there's a driver issue on your PC?
Option 2) If for some reason you really aren't able to get USB mounting working in recovery (I'm skeptical - again, I've never heard of that problem - unless you really did flash a bum recovery image or something - but seems unlikely), then I'd see if you can get ADB working properly when you are in recovery mode. Search around and read about setting up ADB if you haven't already - just a matter of getting the right driver installed on your PC and installing the binary stuff (either from the full Android SDK or one of the packages that just has the ADB stuff floating around). Search the forums, you'll find some references to help you get this working and download the right stuff.
If ADB works, you can always use "adb push filetoflash.zip /sdcard/filetoflash.zip" to put a new file on your internal SD card area and flash it.
Option 3) You can always use nvflash. I'm not going to write up a tutorial on it here - search the forums for nvflash, there are several HOWTOs. Look for the stuff Roebeet posted. You'll need to install the APX driver on your PC first before this will work, and Roebeet's posts don't explain how to install it on Windows, so you'll need to search separately for that. I have gotten this to work before, but it's a pain and I only recommend it if your recovery image is truly trashed or your bootloader is malfunctioning as mine was. In other words, don't bother until you've exhausted the first two options.
So in short - you are in a pain-in-the-ass situation, but you have by no means bricked your tablet - it is very, very far from bricked. Give us more info on *exactly* what happens when you try to "mount as USB" while you have your mini USB cable plugged into the G Tablet - do you see a drive appear on your PC? Are you running a Windows box? Mac? Linux? Have you verified that a USB keychain drive works fine with your PC but the G Tablet won't mount? Basically we need some more info to guide you in your search.
Ok finally had some free time from cleaning/packing and house hunting to try fixing the tablet.
Good news is that I was able to mount the USB. I didn't notice the cat nibble on my cable... So once I dug a spare out, I was able to copy a TnT-Lite image (still had on computer) onto it right quick. Restarted and it installed the image.
So now it has TnT-Lite, though it is weirdly stuck on the setup wizard. It tells me to touch the android to continue and shows an animation of a hand touching the android. But when I touch the android, it turns white and thats it. Also I can change the language to UK or American English. Plus when I press the menu button, I can go to wireless settings, as in cell phone wireless settings. Lastly, I can make an emergency call. So new worthless image. YEY!
I next tried to reboot back into ClockworkMod to see what I could possibly do to get by the lack of continuation in the TnT. But the image install did something interesting. When trying to enter Clockwork Mod, here is what it does from powerup: Displays "Detect a recovery key pressed" then on the next line "Booting recovery kernel image", blanks the screen and then displays "Android" for a few seconds, lastly switching to an exclamation mark in a triangle and rebooting.
So how do I go about screwing it up more?
Tech1381 said:
I next tried to reboot back into ClockworkMod to see what I could possibly do to get by the lack of continuation in the TnT. But the image install did something interesting. When trying to enter Clockwork Mod, here is what it does from powerup: Displays "Detect a recovery key pressed" then on the next line "Booting recovery kernel image", blanks the screen and then displays "Android" for a few seconds, lastly switching to an exclamation mark in a triangle and rebooting.
)
Click to expand...
Click to collapse
CWM is not installed
flash the latest firmware using stock recovery
read read read
http://forum.xda-developers.com/showthread.php?t=892090
It almost sounds like you now have stock recovery in your Gtab.
If that's the case, then maybe copy a stock TNT update.zip onto the external Sdcard, and create recovery/command file on there with the string for SDCARD2, then reboot w power and volume+. If you do have stock recovery, that should flash it back to stick TNT. Try Stock TNT 3452, since that'll also flash a stock recovery for sure.
Jim
Looks like Brian and I crossposted each other .
For the recovery/command file on the external SDCARD, put the following text in it:
--update_package=SDCARD2:/update.zip
NOTE THE 2 DASHES AT BEGINNING OF THE LINE...
Jim
No really, I've Bricked It
So, G Tablet arrived about 5 hours ago. I got it rooted and tried to install CMod 8.1. Things went wrong but I'm not sure what. Anyway, the last thing that I did was to boot in Recovery and then I selected, Format System. Now, when the tablet is turned on, in the top right corner, I have a tiny red message, Magic Value Mismatch. I get this message whether the SD card is installed or not.
I know this information is a little vague but as a Nod, it's all that I have.
f3justusc said:
So, G Tablet arrived about 5 hours ago. I got it rooted and tried to install CMod 8.1. Things went wrong but I'm not sure what. Anyway, the last thing that I did was to boot in Recovery and then I selected, Format System. Now, when the tablet is turned on, in the top right corner, I have a tiny red message, Magic Value Mismatch. I get this message whether the SD card is installed or not.
I know this information is a little vague but as a Nod, it's all that I have.
Click to expand...
Click to collapse
I'm freaking out, I think I bricked it...
I'm only getting the black android screen, I can't seem to mount USB, suggestions?
Ive been stuck right where you are a few times, not to big of a deal, just NVFlash back and start over. I am assuming you are getting the black screen you mention is the APX mode one you get by starting your tab by pressing vol down and power at the same time.

[Q] Possible Sudden Death

Hello all,
I am merely posting here if anyone has a better insight or idea, since I haven't followed with all issues regarding the Galaxy S II International version.
I have purchased mine from one of my country's carrier nearly 2 years ago. I have in the course of these 2 years, rooted it, flashed CyanogenMod, and happily updated it every so often. I always used nightlies, updating almost everyday.
In the last 2 months, it had become sometimes very sluggish, frequent slowdowns, and many lockups, freezing, and some random reboots. I was getting a little tired of it, but was getting used to it.
Yesterday, I was using it normally, when a slowdown started. The app (was 3D game) got unresponsive, but I could still pull the notification drawer, so it wasn't frozen. I pulled and pushed the drawer about 2 times, and then it also stopped responding. The screen was on, touchlights were on, and since I had seen it before, I pressed the power button for a reset.
Then the first boot screen, with the yellow triangle (where it says Samsung Galaxy S II GT-I9100) appeared, but it got stuck there and didn't get past, apparently frozen.
I tried a quick more reboots, and then tried (with very difficulty) entering CWM recovery. I got eventually there, and CWM was working as it should. I considered wiping the cache, or just reinstalling the last nightly I had saved, but decided first to just press "reboot system now".
It also got stuck on the yellow triangle initial screen. This time I couldn't get to the CWM recovery (it seems there was a very small time frame to it to enter before it actually restarted again from long pressing the power button). In a dark room, I noticed that even when the yellow triangle screen was black, the display was on, the backlight was on. The black was bright, and if I pressed the powerbutton for a reset, I could see the screen actually turning off and then on again, and going back to the yellow triangle screen.
I tried to go into Odin recovery, and eventually made it there.... So I pressed to restart the phone, and it continued frozen on the yellow triangle.
I went home with the screen frozen (I couldn't power it off, and I didn't remove the battery). I noticed that after some minutes it restarted, the screen went black and again to the frozen yellow triangle.
I managed to get to CWM recovery after several attempts with the 3 button press, but a different error had appeared: E: Can't mount /cache/recovery/command (or something like it)
So I got home, downloaded codeworkx CWM recovery, put the S2 in Odin recovery, and using Heimdall uploaded it. It completed successfully.
I managed after several tries to get to CWM recovery, it opened again, but more "Can't mount messages" appeared, system_log and such, as I have seen on some forums, and that by then I never had. Read somewhere that probably the system partition got corrupted.
Then this time I reinstalled from the internal memory another nightly I had. I was with June 19, and used the June 16 one. It flashed successfully.
Then I pressed reboot system now, but still got stuck at the yellow triangle screen. And again the message "Can't mount /cache/recovery/command".
So I got into Odin recovery mode (volume down) and using Heimdall again uploaded CWM recovery. But Heimdall got stuck at "Loading KERNEL 100%" It reached 100% but never exited. And the bluebar that was supposed to appear on the S2 screen (that appeared the first time I flashed CWM), didn't appear.
Since it got stuck there for a while, I Ctrl-C'ed my way out of Heimdall, and pressed the power putton on the S2 for another reset.
But this time, it never woke up again. No more yellow triangle screen. No more "active bright black screen". Nothing.
And it doesn't charge even when plugged to the charger.
I am reading about SGS2 that won't turn on and won't charge. It seems a general agreement that Samsung assistance tells us it's a motherboard failure, and should be replaced (and at least here in my place it's helluva expensive).
Since many cases the phone just went dead, mine wasn't quite the case, since it was somewhat alive in the yellow triangle and apparently I could have f*cked up when I Ctrl+C'ed Heimdall and turned off the phone when Odin recovery clearly states "Do not turn off target !!", even though when the flash goes ok, you have to reset it.
Two questions:
1. Is there anything else that can I do to revive it?
2. Can I recover at least the pictures and videos I had saved on the internal memory? I had a ton of pictures and videos inside DCIM/Camera, where for a long time CM10.1 camera could only save pictures to the Internal memory, and when a nightly fixed it, I kept it in internal memory.
If anyone got this far since I was exhaustingly detailed, thank you for your attention!
Unpluging was the bad move that killed your phone. Can try a jig
andrewwright said:
Unpluging was the bad move that killed your phone. Can try I jig
Click to expand...
Click to collapse
Well I had just done the same process, and it was quick. There was no waiting period after the 100%, and Heimdall exited cleanly.
The last time it got stuck in 100% for about 30 seconds, and I decided to abort with a Ctrl+C, unplugged and restart...

Nook won't boot up

The story began when I decided to install CM10 on my nook tablet using old recovery that goes for CM7 and eventually broke my partition table and lost my ID(./adb devices shows 0000000000000000). Since my nook refused to boot futher than CWM loading screen (box) i decided to recreate my partitions through ADB using this method and then reflash nook with AdamOutler's Ubuntu recovery (he provided his own mmcblk0p5).
So, I succesfully recreate partition table (everything was in order, I checked a few times) and reflash it with Ubuntu recovery. Interesting part starts here. Now i get "bla-bla-bla please restart your device" and picture with exclamation mark. A couple of reboots gave nothing and brought me to the same screen. Reflash with BN factory recovery as well as factory reset did not work. At that point I decided to inspect partitions again. Everything was ok, formating, size, etc. But my ID still was 0000000000000000. This brought me to the conclusion that something is wrong with mmcblk0p5 and i need to flash partitions with dd again using this files (method). So, all went well without errors, at the end i killed adb server, dismount SD and pressed "reboot device" in CWM menu. And... From that time my nook is completely dead.
It didn't respond to any key. I charge it all night. I tried to hold home+power simultaneously. No response. Connecting to a computer or power outlet is also nothing.
Be kind, I'd like to hear your advice. Sorry for my runglish.
WidePants said:
The story began when I decided to install CM10 on my nook tablet using old recovery that goes for CM7 and eventually broke my partition table and lost my ID(./adb devices shows 0000000000000000). Since my nook refused to boot futher than CWM loading screen (box) i decided to recreate my partitions through ADB using this method and then reflash nook with AdamOutler's Ubuntu recovery (he provided his own mmcblk0p5).
So, I succesfully recreate partition table (everything was in order, I checked a few times) and reflash it with Ubuntu recovery. Interesting part starts here. Now i get "bla-bla-bla please restart your device" and picture with exclamation mark. A couple of reboots gave nothing and brought me to the same screen. Reflash with BN factory recovery as well as factory reset did not work. At that point I decided to inspect partitions again. Everything was ok, formating, size, etc. But my ID still was 0000000000000000. This brought me to the conclusion that something is wrong with mmcblk0p5 and i need to flash partitions with dd again using this files (method). So, all went well without errors, at the end i killed adb server, dismount SD and pressed "reboot device" in CWM menu. And... From that time my nook is completely dead.
It didn't respond to any key. I charge it all night. I tried to hold home+power simultaneously. No response. Connecting to a computer or power outlet is also nothing.
Be kind, I'd like to hear your advice. Sorry for my runglish.
Click to expand...
Click to collapse
I'm having the same problem. I downgraded from 1.4.3 to 1.4.0. I was able to boot it once and then shut it back down so I could root it. Now it won't start up at all and I have tried everything that I can find to boot it to no avail.
The NT can sometimes get stuck in limbo while booting up, especially with SD-based boot. To get out of it, hold down the power button for 20-30 sec to turn it off then power it on again. Also remove any "bootable" SD card from the card slot; if it boots then the card was not bootable and its non-bootability was the problem.
It's also possible that the NT battery is completely drained (battery readings on some CM builds can be quite off, sometimes as much as 20 points) in which case you'd need to use the BN wall-charger and charge it for 8-12 hours.

[Q] Stuck in recovery boot loop midflash upgrading to KitKat 4.4.2 on dtmo SGS3

My device details: SGS3 T999, rooted, running Jellybean 4.3 on a liquid smooth ROM. Its a year old and has been a solid performer up until now.
My device is stuck in a cycle where it gives a quick vibrate, then SGS3 splash screen with white letters, then black screen, then tiny blue "Recovery booting..." words in upper left of screen, then black screen with couple vibrations, and around and around it goes in the same repeating cycle.
Just before it started I had taken the following actions: Dumped the following 2 files onto my EXTSD card (cm-11-20131217-NIGHTLY-d2tmo.zip, gapps-kk-20131119.zip) from my PC, booted phone into recovery mode using TWRP, did a factory reset wipe (success), cache wipe (success), dalvik cache wipe (success), flashed the NIGHTLY file (failed), flashed the gapps file (failed). At this point I should have sought some support. Fool! I next did a reboot step still in recovery mode. Without the reboot happening a message came up stating Superuser permission had been broken (the best I can remember) and the option to have TWRP repair the permission. I opted "yes" to repair. Then the loop started that I can't escape.
I have pulled the battery multiple times, tried a regular boot up, tried a recovery boot up (up volume+power+home) dropping the home button after a few seconds. Nothing is working. Prior to the above steps I backed up everything on the device. So I have backups to use if it can be done. My best guess is that I failed to update my CyanogenMod or TWRP to the very latest versions and it caused this hang up. Otherwise, I don't know what to do and need any help I can get.
Has anyone had this issue or heard of anyone who has and have any helpful suggestions, tips, ideas, etc..?
Thank you in advance. This is my first XDA post. Please forgive and offer tips if this thread needs any scrubbing.
I've had a few similar events for a few different reasons.
I would suggest booting into recovery but it seems you have tried that already.
If the device is plugged into a wall or pc, unplugg it, that has seemed to cause and fix boot issues for me before.
Other than that, I dunno, if you can't get to recovery or fastboot, I dunno...

[Q] CM 10.2 Boot failure

This morning when I turned on my NT I got the usual flash and initial screen but then nothing (no CM boot animation). Closer inspection (in the dark) revealed a slightly backlit screen so I held the power button until that went out and tried several more times with the same result.
I put in the recovery SD and restored from my most recent backup, thinking the boot image had gotten corrupted somehow. After restoring it booted up fine out of the CWM routine and worked OK. I shut it down midday and then remembered I wanted to do something else tonight. I ended up back where I started! It won't get past the slightly backlit screen.
I've tried inducing it to boot without the SD card (same result) and with the SD card from the OFF state by connecting it via cable to the USB port on my laptop (same result).
I don't know what to try next, beyond the obvious of yet another restore from backup and maybe never powering down again....
Help!
Update: so I left the NT connected via USB to my laptop for an hour or two, after letting it get to the black backlit screen (but no boot animation or any other evidence of life). When I pressed the "N" button it displayed the lock screen!!!!! Everything seems to work but this is too bizarre. Still would like suggestions.

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