yashsingh1/xdaforums huggingface dataset:
[Barnes & Noble Nook Tablet] digixmax:
Unfortunately, recovery programs' error messages often are not revealing or accurate about the underlying root cause.

I don't think your issue is sdcard related, but it does not hurt to try using your existing card. Just rename TWRP (make sure that you download and use the sdcard image version and not the emmc image version) to recovery.img before you copy it over to the sdcard. Also, do "wipe /data & factory reset" and "wipe /cache", before proceeding to "install zip".
[Barnes & Noble Nook Tablet] nmyshkin:
Wow. So here's the thing: over and over with the same "unable to mount '/bootdata' " message at each and every action.

It turns out, you just ignore that. I read that dubious-sounding claim on a site where they were describing the installation of KitKat with one of those pre-made cards (I know, I know....). But......I tried it and am now signed in to my new CM 12.1 tablet :D

Ahem.....I

really

liked the Trebouchet theme and wallpaper of CM 10.2.1. Tastes vary, I know. Is there any way to get a Trebouchet theme pack?
[Barnes & Noble Nook Tablet] digixmax:
You can extract (using a zip archive program like 7-zip) the Trebuchet's wallpaper image files (i.e., typically named wallpaper_xx.jpg) from the folder \res\drawable-nodpi\ of the Trebuchet.apk file which in turn can be found inside the folder \system\app\ of the CM10.x ROM zip file, save them to some place in your user-data partition and then you should be able to select any of them as a replacement wallpaper for your launcher.
[Barnes & Noble Nook Tablet] nmyshkin:
Thanks so much for all your help. That worked like a charm. I've been battling CM 12.1 into submission and relearning where the developers hid this and that setting. I'm close to my first backup but I may be getting buyers remorse. The tablet seems a little unstable and sluggish. Well....that's why I kept my CM 10.2.1 SD card :D
[Barnes & Noble Nook Tablet] digixmax:
If you decide to give up on CM12, I'd suggest you give CM11 a try.
[Barnes & Noble Nook Tablet] nmyshkin:
I'll keep that in mind. Piece of cake now :)

Any particular build?
[Barnes & Noble Nook Tablet] digixmax:
I can't really provide an up-to-date recommendation of a build, as I no longer have a Nook Tablet (its battery headed south, and the cost of an aftermarket replacement battery is somewhat hefty plus I didn't quite trust myself being able to do a DIY battery-replacement without accidentally ripping some fragile connector/wire, so I traded it in for a Samsung-made Nook for my kid). The last CM11 build I used was the M12 snapshot and I was very happy with it. However I'd suggest that you consider CM11 latest snapshot circa late August '15 as it should have incorporated fixes for the Stagefright security vulnerability.
[Barnes & Noble Nook Tablet] digixmax:
Can you post the link to the SD-based recovery img file that you downloaded and used?

Tx.
[Barnes & Noble Nook Tablet] cfariz:
Hi Digixmax, I got it from the link you provided:

"TWRP (TeamWin Recovery Project) version 2.6.3.0 or later, e.g., openrecovery-twrp-2.6.3.1-acclaim-sdcard.img from techerrata.com/browse/twrp2/acclaim rename it to recovery.img before copying to SD card."
[Barnes & Noble Nook Tablet] digixmax:
Thanks, I didn't know if CM12 requires -- and thus you have used -- a later version of TWRP.
[Barnes & Noble Nook Tablet] Stu Pedaso:
I know this is really old tech, but why are there so many dead links.

Just looking for a good bootable image.
[Barnes & Noble Nook Tablet] nmyshkin:
So, @Stu Pedaso , what exactly is the deal? I want to help but you are not being very "helpable". Yes, most of these posts are old and ALL links that point to cyanogenmod.org are dead. They are deader than dead at this point. That's why someone (me?) made available a small archive of ROMs for the Nook Tablet (see https://xdaforums.com/t/how-to-cm-1...gb-nook-tablet-bntv250a.3667555/post-74122738). Those ROMs (and Recoveries) represent pretty much all that remains (although CM 10.2 is not there, but I have posted a link for it elsewhere). Most old TWRP recovery links are also dead. Here is a direct working link to TWRP recoveries for the Nook Tablet: https://dl.twrp.me/acclaim/

However, none of that will do you any good without a booting sdcard. So I ask again, what is the deal? The files needed for a bootable card are all available from the mediafire links in post #1 of this thread.

You need to:

1. Follow steps 1&2. You'll need to get the TWRP recovery from the link I gave above. Just get the same version suggested by @digixmax if you're going for CM11 or CM12.1. If you want to try for something beyond CM12.1, check back to my thread with the various ROM links and see what recovery is needed and get that. Also download the ROM you want. Substitute that for the one listed in the instructions. GApps is another issue. If you actually have an 8 GB tablet, you'll have lots of problems with GApps beyond CM11. There is still a package at OpenGApps for Android 4.4 (get the pico version). Hopefully they have not made it any bigger since I used it a long time ago. They have a tendency to revisit packages and inflate them.

So there you are, you can get ALL the files you need to follow the instructions in post #1. So go do/try it! Then maybe you'll have some real questions.
[Barnes & Noble Nook Tablet] digixmax:
In case if helps someone, here's a link to some old CWM & TWRP versions: https://www.mediafire.com/folder/xjwc1a482a6ll/Nook_Tablet.
[Barnes & Noble Nook Tablet] Stu Pedaso:
Thank you for all the files, and instructions.

Still just boots normally. When I can look at what is on my sd card(after the NT boots) everything I installed on the card is just a questionmark. This NOOK cannot read this type of file.
[Barnes & Noble Nook Tablet] nmyshkin:
It's very important not to skip Step 1 in the instructions found in post #1 of this thread. The card must be formatted properly or the NT will not boot from it. When the card is correctly prepared these should be the files:

MLO

flashing_boot.img

u-boot.bin

recovery.img (this is the renamed TWRP sdcard img file)

flashable CWM.zip

a CM ROM zip of some kind

maybe a GApps zip

Some NTs will not boot from the sdcard unless they are plugged into a power supply (or a PC USB port).

I asked you this before so please forgive me if I ask again because what is happening to you sounds a whole lot like what happened to me not too long ago when I thought I had purchased a Nook Color and the seller actually sent a Nook Tablet. I could not get the thing to boot from a card no matter what I did. One day I flipped it over and noticed the model number at the bottom of the back side. It was clearly a Nook Tablet and I had been using all the files for a Nook Color. With the correct files, it booted right up from the card, first time.

Are you

sure

you have a Nook Tablet (BNTV250A)?
[Barnes & Noble Nook Tablet] Stu Pedaso:
According to the info in the Nook it is a BNTV250A. Following the steps formated the disk to FAT32, if I make it set to Active it does the long black screen, then boots normally. If I dont make it active it just boots normally. The list of files files on my SD looks just like what you have listed. Did try just plugging in and letting it boot by itself. No change. I know this is frustrating, at least for me. I dont like to throw stuff away until it absolutely wont work any longer.
[Barnes & Noble Nook Tablet] nmyshkin:
So you did this:

"set the partition ID type for the partition to 0x0C FAT32 LBA"

ad it still does not work. Do you have another sdcard you can try?
[Barnes & Noble Nook Tablet] Stu Pedaso:
OK I think I found my problem.

The program I have for formating my partition, mini tool partition tool, wont let me "partition ID type for the partition to 0x0C FAT32 LBA ". As I said Im cheap and this version is free.
[Barnes & Noble Nook Tablet] nmyshkin:
Mine is free also (ver. 12) and it seems you are correct. Well, well....it's been awhile since I did this and I didn't see that before. Let me see if I can scare up ver. 11 somewhere....

Mmm....here you go. My memory says that is the version I was using previously. Not sure now why I updated. Probably when I was frantic over the Nook Color that was a Nook Tablet. Version 12 has an annoying nagware update feature. Version 11 did not, as I recall.

Edit: rats....Windows says there is a virus issue and deleted the file....back to searching....

Uninstall ver. 12 and install ver.11 and see if that will enable you to set the ID.

More Editing: OK, let's try this another way. Too bad I updated my software....

Take a look at: https://www.diskpart.com/articles/change-partition-type-id-8523.html

Forget about the first part that wants you to download yet another program. The second method (scroll down) uses a native Windows executable (please don't tell me you're using a Mac....) called DiskPart to do the job. Here's what I did:

1. insert sdcard in card reader slot of PC

2. open a command prompt window

3. type "diskpart"

4. Now that you're in you can follow the directions they give. On my PC the sdcard was the last volume listed and marked as "removable" (you can also see its approximate size for additional verification).

5. at the prompt type "select volume x" (whatever your "x" is)

6. at the prompt type "set id=0C" (it says the first part of 0x0C is assumed, so you just need the "0C")

7. at the prompt type "exit"

So do that on a clean, FAT32-formatted card before copying on the files and see if that fixes the issue for you. {fingers crossed}
[Barnes & Noble Nook Tablet] Stu Pedaso:
Well,

Looks like im going to have to just go buy myself a tablet. does basically the same thing even with the ID set.

Boots straight to the stock Nook. If I set the sd card to active it stays blank for a while, then just boots normally.

Maybe my current version is hindering my progress. Says it is 1.4.4. Possible there is something in that version holding me up?
[Barnes & Noble Nook Tablet] nmyshkin:
I don't think the stock version has any effect.

The partition ID and "Active" status must both be set. If that's still not working, it might be the card.

I have one other idea for you to try. Back in the day, sdcard-based ROMs were a thing. Here is a link to a pre-built Jellybean ROM: https://iamafanof.wordpress.com/201...-1-jellybean-sdcard-img-for-nook-tablet-0110/

You just download the file (scroll down to "Download image"--pick most recent) and burn the image to an sdcard. It's that simple. Put the card in the NT and turn it on.

IF

that boots properly (it did for me once) that doesn't necessarily mean you are stuck with an sdcard ROM. The configuration necessary to boot the ROM is most likely the same as what you need to get started. You'd just go in and switch out stuff (without reformatting!!) until you had the files suggested in post #1 here. I think.
[Barnes & Noble Nook Tablet] Stu Pedaso:
Alright, I am one step closer. It did not like the SD card size. Formated down around 4, booted, sort of.

"booti: bad boot image magic(in Memory)"

MLO

Flashing_boot.img

u-boot.bin

recovery.img(renamed from twrp)

cm-13.0 (have tried several versions)
[Barnes & Noble Nook Tablet] Stu Pedaso:
The smaller I made the disk the better it performed, 2G now. Error is gone, now just says booting from sd, flashes and keep saying booting from sd. Is there something else I can put on the SD or am I just not patient enough?
[Barnes & Noble Nook Tablet] nmyshkin:
Not sure exactly where we are now. Are you talking about the Cyanoboot screen? If so, you don't have a custom ROM installed so it's not going to be able to complete a boot unless you select something from the boot menu. There's a notation at the bottom of the boot screen to press and hold the "n" button for the boot menu. That will allow you to select "SD recovery" and should boot up CWM. You can then use CWM to flash TWRP to the emmc. The next boot, you should select "emmc Recovery" from the boot menu and that will boot up the internal recovery.

Unless that's not what you are talking about....

Edit: or I might have that bass ackwards. The TWRP may be the resident SD recovery and the CWM flashable to emmc if you want it there. Been awhile....
[Barnes & Noble Nook Tablet] Stu Pedaso:
It was at the cyanoboot screen, when I did sd recovery it would start to load then flash and load and flash. Finally looked for another twrp version. this one worked. currently have cm-12.1 loaded. a little slow and likes to shut off apps, but its on there. thanks for the assist and patience. are other cm's more stable than others? can I install a different web browser? What does the gapps do?
[Barnes & Noble Nook Tablet] nmyshkin:
Congratulations! Persistence pays off.

No one is going to confuse the Nook Tablet with a new Samsung Galaxy. The hardware was designed for low-demand Gingerbread, so it's not a gaming device by any stretch of the imagination.

CM11 gives the most sprightly performance, but there are significant issues. The SSL is out of date and the webkit is so old that many websites (XDA included) cannot display properly, no matter what browser you install.

For a minimum of adequate performance, CM 12.1 is a starting place. It is what I have on my 8GB NT. I used to run it on my 16 GB NT but I did run into problems with app crashes and sometimes the tablet would just shut off. It has issues. Most of these ROMs behave better if they have been running for awhile. Some people never shut their tablets off (just cycle WiFi when not in use). You can certainly install another browser. I like Via for its simplicity.

You might want to look at CM13. I've never run it on my 16 GB NT, but when I was doing the write-up for the 8 GB model (the thread where you started) I was impressed by its behavior. It seemed more stable than 12.1.

I currently run AOSP 7.0 on my 16 GB NT and I like it, but it's not a speed demon.

GApps = GoogleApps. If you want the PlayStore, you "need" GApps. If you want to be able to access your Calendar, Contacts, Drive, Books, etc., all those Google things, you need GApps. To run some non-Google-related apps you still need GApps (MX Player, for example).

The problem with GApps is that it sucks up system resources big-time. So your tablet gets even slower and crankier. It's fine with CM11, even on the 8 GB model, and I have it installed on my 16 GB tablet with AOSP 7.0, but if I were going to redo the tablet, I would go the microG route as described in the thread where you started. That allows you to establish a Google account on the device and access Google apps. It can allow you to run the PlayStore but not purchase apps.

Or, if Google stuff is not important to you and you don't find apps complaining that they won't run without Google Play Services, you can always install the Aurora Store (F-Droid) and run it with an anonymous login. This gives you easy access to the (free) apps on the PlayStore without GApps.

Or....you can hunt for apps at places like apkpure.com. The advantage there is that you can often get an older version which will be less bloated and run better on the NT (I do that

a lot

)
[Barnes & Noble Nook Tablet] bengineer8:
I don't see anything about "partition ID type".

What should I do?
[Barnes & Noble Nook Tablet] nmyshkin:
Version 10 required: https://www.mediafire.com/file/psuwg3iugtqh096/pw102-free.exe/file
[Barnes & Noble Nook Tablet] bengineer8:
I am not seeing the SDC recovery option, where did I go wrong?
[Barnes & Noble Nook Tablet] nmyshkin:
Well....I have a headache after trying to follow that Red Bull-induced video o_O

Anything could happen, but since the card boots at least that part is OK. The TWRP you want is 2.8.6 for the sdcard (renamed "recovery.img") and I thought I saw that flashing by at one point. It

must

be the sdcard img because the regular one can only run from the internal emmc. I don't think I saw any of the options in the menu lighted up, but it went by so quickly.

However, just because the card boots does not mean it is working properly. I've helped many people do this sort of thing over the years and it's almost always the card, either the preparation or just the physical card itself that is not up to doing this sort of magic.

So first I'd wipe the card entirely (reformat) and try again, observing in particular the order for adding the boot files. Then I'd probably download another copy of the SD card TWRP, just to be sure. You can skip adding all the other files for now because if the card still doesn't show the SDC recovery option when it boots, then none of the other stuff is going to be of any use.

If that does not work, try a different card. I've always used Sandisk Class 10 cards for stuff like this an never had any of the problems some people encounter.
[Barnes & Noble Nook Tablet] bengineer8:
You can go to YouTube and set the speed to 0.25 for real time.

That is the .img file I loaded on to it.Only the top and bottom options were lit. Sorry that I had to end the video abruptly....

The card has been wiped several times already and one of the attempts with a different method that involvedh flashing an img file to the card and different CM version (10.2) did have the SDC recovery option. Draw back is that it boot looped and so never booted normally and I didn't know about SDC recovery or what it did.

So, should only the recovery.img file be on the partition?

It is a card I got with the device when I got it from my grandma years ago. Might try a 1GB card I have if you think I should.

To be lear, I am also trying to follow this guide: https://xdaforums.com/t/how-to-cm-11-and-beyond-for-the-8-gb-nook-tablet-bntv250a.3667555/
[Barnes & Noble Nook Tablet] nmyshkin:
I think the initial problem is the card recognizing that the recovery.img is there, so for now there is no point in putting anything else on the card until it boots up to show the SDC recovery. That just saves you time as you remake the card. Obviously the boot files have to be there also, but no ROM zip or GApps zip or even the flashable CWM zip right now.

A 1 GB card might be a little tight for what you are trying to do (try the math yourself), but perhaps if you don't make any backups....
[Barnes & Noble Nook Tablet] bengineer8:
Update: I had apparently effectively renamed the file to recovery.img.img

Still not working but it is different errors now.

Now it is a problem getting CM to load.

Device shut itself up mid steps 7-9 and is now in a boot loop without the SD card or intervention CM does try to load, but the screen goes all weird and it then reboots.

An error I got while doing the wipe and installs: Unable to mount '/bootdata'.
[Barnes & Noble Nook Tablet] nmyshkin:
oh , yeah....no file extensions showing....

The "unable to mount /bootdata" is pretty typical. Ignore it.

The rest is not typical. Something is not flashing cleanly or properly either because the file is corrupt or the device did not completely wipe. I generally wipe *twice* and always an "advanced" wipe, selecting everything

except

the microSD card. Then I do the flashing. Keep an eye out for any errors (other than the /bootdata artifact.

Do you need MD5 values for the large files, or are you sure about the download integrity?
[Barnes & Noble Nook Tablet] bengineer8:
I was using links provided in threads but a clean list of links that are known good wouldn't hurt.
[Barnes & Noble Nook Tablet] nmyshkin:
Here is a list of the essentials. I found this older version of TWRP in my CM11 folder for the Nook Tablet.I probably changed it later to accommodate CM12 and CM13, but you can use the older one for CM11. Perhaps it will give you a better result. Also, the GApps from OpenGApps is much larger than what I used originally. This is a problem with GApps, the packages keep expanding until there is not enough room for them on our devices. When you sign in Google should replace/update anything it doesn't like. If not, then you can try the current version at OpenGapps.

The alphanumeric strings are MD5s. If you don't have an MD5 calculator, you can use the one I have provided in the zip below (for Windows only, though). It's a way to check file integrity before you spin your wheels on bad downloads. Non installation required. Just unzip and run the exe file.

CWM flashable

flashable_CWM_6.0.4.5_chrmhoffmann

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

www.mediafire.com

416c82307d2e89a48ddaad14b510f5cd

SDC TWRP

Download twrp-2.6.3.1-acclaim-sdcard.img

Download page for twrp-2.6.3.1-acclaim-sdcard.img

dl.twrp.me

22c8ab9a0728571373906e4213ce9701

ROM

cm_acclaim-UNOFFICIAL-cm11-2015-11-19

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

www.mediafire.com

9624331d7e6c3bd9182c488c54b2d23c

GApps

open_gapps-arm-4.4-pico-20170813

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

www.mediafire.com

de6f059f6b8e5e171bfc882e94b9948b
[Barnes & Noble Nook Tablet] bengineer8:
What about all the stuffs in succulent_boot?
[Barnes & Noble Nook Tablet] nmyshkin:
Those are really small files, not generally an issue for download integrity. Still:

MLO

979fa71c9ee33ca9690df809c71e1991

u-boot.bin

1070cd90b3d57a47cdc8c22b00243ff7

flashing_boot.img

3a626c102ef4324a163d54751ef680f1

The original source is fine for the download. Be sure to copy them onto the prepared sdcard in the order listed.

Also, be careful with TWRP. The touch interface is very squirrely. Make sure when you check an item that it is actually checked. The box should have a check in it BUT there should be no highlighting of the item. Items with both are not really selected. It's a bit like whack-a-mole, but before you use the slider just be sure everything you want to wipe or flash is correctly indicated.
[Barnes & Noble Nook Tablet] bengineer8:
Update: Worked!! Thank you ever so much for your help. :D

Now I know for certain that the touch screen is bad. XD

Can't thank you enough.
[Barnes & Noble Nook Tablet] nmyshkin:
Oh.....sorry about that :-(
[G2 Q&A, Help & Troubleshooting] I AM M07S:
Im currently using the LG G2 D802 and can't get past the "secure boot error" thing I have tried alot of different solutions that have worked for others but can't seem to get a recovery installed please help I am currently using [VDT-ROM] V11 Super Lite rom which is pretty much lg 4.4.2 stock with root

all help appreciated, cheers
[G2 Q&A, Help & Troubleshooting] zekurosu:
there is no custom recovery for 4.4.2 yet..

the only way to have custom recovery is via certain method listed where u need to go back to 4.2.2 then upgrade to 4.4.2 with a custom kernel thats permit u to have custom recovery from 4.2.2

http://xdaforums.com/showthread.php?t=2681205 - but this is only for D802
[G2 Q&A, Help & Troubleshooting] ericoj:
Yea [MENTION=4365712]zekurosu[/MENTION] is right you do need to go back to 4.2.2 if your on the Official kitkat update. A lot of developers recommend using PhilZ touch recovery for now if you want to flash 4.4.x ROM's such as Cloudystock. Other recoveries have not been optimized yet. You can find more about it here:

http://xdaforums.com/showthread.php?t=2554053

Hope this helps! :laugh:
[G2 Q&A, Help & Troubleshooting] shudoha:
go back to 4.2.2 + root + philz new version recovery

reboot on recovery

wipe data and factory reset

choise clean for install new rom

flash KK baseband (old kernel jb) for d802

flash custom rom

reboot and enjoy

you have root and recovery
[G2 Q&A, Help & Troubleshooting] Dneoz123:
Hope this Helps.

I had a similar error with my D802 and this worked for me so you can give it a shot.

http://xdaforums.com/showthread.php?t=2500441

Once you've installed the recovery it should boot up into recovery. However, i was still 4.2.2 when i tried it so it may not work for you. Nevertheless, trying wouldn't hurt :)

Good luck!