yashsingh1/xdaforums huggingface dataset:
[Barnes & Noble Nook Tablet] nmyshkin:
Alright.

First, I took a close look at the 8 GB card you showed in the post above. It's a class 2 (tiny number in the "C" symbol). That's probably not going to work.You need at least a class 4. I generally use class 10 or even a UHD. If all your cards are class 2, that might be the problem. Forget the 1 GB. It's not big enough. You should have at least 8 GB (16 is better) or there will not be any room for backups.

Second, I'm about done. I almost wiped my own SD card while trying to get a smaller-sized image done. Too many things to keep track of, too many cards to watch.

Anyway, the smallest image I could produce was 100 MB. It's ridiculous for about 550 KB of files, but it's the only way I could get it to work without producing something even larger. I then burned the image onto a freshly formatted SD card (class 4) and produced a card containing MLO, u-boot.bin and flashing_boot.img with the correct partition characteristics. When I put a copy of recovery.img on it and then put it in my tablet and booted up, I was able to get to the Cyanoboot menu and access TWRP.

So that process works for me. If it does not work for you, then you need better cards.

I'll have a write up later today (I hope). I'm still uploading the image file as I type. This is more complicated than it should be but your problem with producing a functioning card is making it that way. This is my last idea.

EDIT: I see looking back at your earlier image of your cards that one of the 16 GB cards is class 4. Use that one when I get the instructions posted. Prior to that, format it with Windows (do a slow format, i.e., uncheck the "Quick format" box).
[Barnes & Noble Nook Tablet] aykov77:
==> Hi, this is what I did with 16GB microSD class (4), slow format on win 10 PC, in FAT 32, than changing the partition type in MTPW 10 to 0x0c Fat32 LBA, uploading one by one every file as you stated... and even thou, no success... :( Will try to look for SD 8GB and above class higher than (4) which turned out is not giving possitive success...

Awaiting u, thanks!
[Barnes & Noble Nook Tablet] nmyshkin:
I just noticed something odd about your file listing back in post #65.

The file "flashing_boot" should have a file extension. It should read "flashing_boot.img". Just like "recovery.img" below it.

EDIT: Oh boy.......I see it now. You have Windows set to

not

display file extensions, don't you? Good grief. So the real problem is that "recovery.img" actually is "recovery.img.img" and that's why your card won't work. Rename the file to just "recovery" and then try it out. I'll bet that works.
[Barnes & Noble Nook Tablet] aykov77:
==> Thanks for being so particular in verifying the file extensions, actualy Yes, u r right about that I have Windows set to

not

display file extensions, but as you said to rename the file I left the extension same as initial name of the file was... I expected something wrong with some of the files, so it came in front what was wrong, Bravo!

At 0355 am I'm almost dead to try with all procedures which you described in your post #60. After wake up will continue/start again ;)

Really appreciate every single effort with your willing to solve the problem. Could you tell me please which way to continue is better, to follow all your instructions described in #60 or to do with the above: 1. & 2.

1. Download the Cyanoboot.img file.

2. Download the win32diskimager zip

This is the way in many YouTube video steps for flushing the ROM with win32diskimager zip, when you told me earlier to stop watching the Youtube methods...

Which way is better, instructions from post #60 or here with the above: 1. & 2.? What is the difference?

After waking up will continue. Thanks!!!
[Barnes & Noble Nook Tablet] nmyshkin:
Post 60.
[Barnes & Noble Nook Tablet] aykov77:
==> Thanks, just starting.
[Barnes & Noble Nook Tablet] aykov77:
==>c. Here do you mean I should insert another microSD card or I should use the same one inserted with all files?

Here is the next catch for me... After following all instructions twice I reached the same unusual place. After the first one attampt I decided to start from initial Zero with Win Full Format of SD card in Fat 32 with defaults, than changing the partition type to 0x0C FAT32 LBA, than 1 by 1 each file copy/paste and 4) SDC Recovery was active, activated and now please see the attached photos

1. All in the left with X, but was not able to change the storage place to microSD card, still same SD card inside

2. Micro SD card was only highlighted, but not possible to activate with the blue dot as a storage place for Back Up :(

3.When I did on the Internal storage the Failure come... After activating Reboot System came the next

4. Where not sure if I should proceed with Installation of SuperSU

Please advise! Thanks Bro, a lot!
[Barnes & Noble Nook Tablet] nmyshkin:
Where did I ever mention SuperSU?!

You're not going to make this easy.

TWRP will sometimes fail to mount the SD card (yes, the same SD card you used to boot). When that happens you can try "Mount" from the TWRP home screen but often that also will not work or the microSD card option is not visible.

When that happens I just reboot to System (with the card still in place) and keep my fingers crossed. That usually sorts things out.

Unfortunately the developers who made the various TWRPs did not always run down all the bugs so we have to work with what we have.

I don't know where you got the SuperSU idea (YouTube?), but forget it. The ROM has it's own built-in root controller. You'll just mess that up if you add anything else.

Stick to Post #60 or we're not going to get anywhere.
[Barnes & Noble Nook Tablet] aykov77:
==> got it, rebooting until it TWRP recognizes the sd card!

==> Not YouTube, from inside of TWRP az option after the Failure... I stopped reading and watching another sources since you told me to stop, only following your instructions... if I follow others apart from yours will be big mess and trouble in my communication with you, I stay firmly with yours!

==> Nothing extra, only requested files in the card and your instructions!

==> Exactly, following strictly P#60 and nothing external, reading word by word few times before doing something.

Lets try with rebooting to recognise the SD inside to finish with the Back Up with fingures crossed.

Big thanks!
[Barnes & Noble Nook Tablet] aykov77:
I tried out more than 10 times Reboot and still not detecting the SD card, even in picture 1) as attachment going in it is not possible to click and make X to picture 2) where is Micro SD card :(

Picture 3) is coming when I request Reboot from picture 2) and press "Power Off"

Do you think if another source of download TWRP or better version will be ok to recognise the SD card?
[Barnes & Noble Nook Tablet] nmyshkin:
I just don't know. You can try another TWRP but it's not that simple. TWRP versions advance along with the Android version. So a newer version might not be able to flash CM13.

I really am out of ideas. As I said in post #60, it is not absolutely essential to backup the stock OS. There is another way to restore the tablet to the original B&N system if you just don't like the custom ROM or you want to get rid of it. That involves burning a special card (...).

So it's your choice. You can skip the backup and continue on with the instructions in Step 3. Who knows what else will crop up?

Or you can abandon the project.
[Barnes & Noble Nook Tablet] aykov77:
==> Will not try another TWRP then... will see as last option to get petter class SD card, will try all and everything to finish my project, cannot affort to abandon, deffinitely I need to wake up the ghost of my old Nook...

Will try little more and if I cannot succeed, with go to next step without Back Up...

==> Will go to next step #3 after fow more attempts. In one of your early instructions you stated to delete ths file "twrp-2.8.6.0-acclaim" and to use this one "flashable_CWM_6.0.4.5_chrmhoffmann". Do you think that would be better if I return back to the SD card initial file "twrp-2.8.6.0-acclaim"?

Thank you Bro, cannot surrender...
[Barnes & Noble Nook Tablet] nmyshkin:
No, that was my mistake. That TWRP file was not flashable.
[Barnes & Noble Nook Tablet] aykov77:
Only in my mind remain the option to try with higher class SD card... I tried with and without power cable connected, but no sence :(

No other idea what I can do...

No idea why there is indication that micro SD card is 0 MB and not giving me option to click on it... 16 GB card with 0 MB available space... lost in doubts
[Barnes & Noble Nook Tablet] nmyshkin:
I'm sure that's not true. Take the card out and inspect it with Windows. There's less than 2K worth of files on it.

I did some checking. There is no TWRP version for booting from the SD card on a Nook Tablet.
[Barnes & Noble Nook Tablet] nmyshkin:
That may be the solution (try to get a SanDisk class 10 or UHD or something like that).

I have discovered an "updated" TWRP. It's not an "official" version: 2.8.0. It was compiled by one of the original developers of the Cyanoboot system for use with his own customizations of CM11. Maybe he did a better job with SD card recognition? (there a quite a few threads on this site about this problem with TWRP).

Anyway, it works for me (but then, so did 2.6.8). I can't guarantee it will flash CM13, but I don't see why not.

Download this zip and extract recovery.img. Copy the file to your prepared SD card (overwrite the present version--you can always download another copy if you want it back). Then try it out. Good luck.
[Barnes & Noble Nook Tablet] aykov77:
==> Do you mean to try with this TWRP version 2.8.0? and where to download? Hope will do SD card recognition

==> Thanks, will try all what u r advising!

Today I was playing hard with many restarts & reboots, even I found 4 GB SD card class 8 and what it turned out... The 32 GB SD card from attached earlier photo and this 4GB class 8 Sd card, both after FAT32 (Default) formating when I opened MTPW 10, both they were 0x0C FAT32 LBA without option to conver to... Any of these two with all files inside were not able to boot the Nook... The Nook itself was uploading stright away the Nook software, but not in TWRP as supposed to be... with and without power cord ... no success...

Will try to get a SD card class 10 or UHD to see... :(

As another option I see if you upload some CM image of your Nook BNTV250, 16 GB and if I can manage to upload on mine with win32diskimager zip as you proposed in one of the last posts...

Now will try with this proposal: Download this zip and extract recovery.img. Copy the file to your prepared SD card (overwrite the present version--you can always download another copy if you want it back).

THANKS!
[Barnes & Noble Nook Tablet] nmyshkin:
So...did you see the download link right below?!

You cannot use a 32 GB card. Nooks don't like 32 GB cards.
[Barnes & Noble Nook Tablet] aykov77:
==> Thanks, that would save some attempts.

Still same :( ... I downloaded this zip and extracted & copied the recovery.img to my prepared SD card (overwrited the present version TWRP with 2.8.0, but nothing changed, please check attached photos... Both SD cards indicating 0 MB and unable to place X, even in Menu Mount was not able to place X on SD card (photo 3)... could be something with other file??? will try rebooting with/without cable to see, but not sure & with doubts if it will be possible after many attempts

I need to get my Notebook alife, no other chance for me :( I need to use it properly :(
[Barnes & Noble Nook Tablet] nmyshkin:
Did you remember that I said the backup step was

optional

? You are spending a lot of time and frustration. It's pretty clear there is some issue with the SD card, but that does not mean you can't flash the CM13 ROM with TWRP, it just means you're going to have issues with backups (at least with your card).

It is

remotely

possible that a newer version of CWM might be able to flash the CM13 ROM and also make a backup, but I don't know. Among the files you downloaded today is one called altboot.img. If you copy that to the SD card and at the menu choose "ALT SDC Recovery" it should load.

CMW is not touch-based. Menu navigation is done with the volume controls and a choice is selected with the "n" button. The power button goes back one screen.

First, you would want to make a backup of the original B&N OS to the external SD card. Then you would wipe the internal system and then flash the CM13 ROM.

However, if you wipe the system and CWM can't flash the CM13 ROM then you will have a tablet without any OS. So there is a real risk.

There is less risk wiping and flashing with TWRP 2.6.8 even if it won't make a backup. But there is some risk. It's your call.
[Barnes & Noble Nook Tablet] aykov77:
==> Right, I remember every your advise, but as soon as I have some hope will try to follow strictrly P#60 with Back Up first, will try with SD card class 10 or UHD and then if no success then is my final option to continue without...

==> This is what I'm planing to do, only want to try with SD card class 10 or UHD if I can find in next 2-3 days, It's real frustration for me, but I would stick to the protocol if as reasonably can... if not will go to point 3) in P#60

==> If you r not certain sure better not to ruin the sleeping Nook, I need it alive. If there is tested & reliable CWM would be good, but you know better, so need to eliminate that risk

==> I was going to ask you abt these 2 files remaining in your *.rar... "altboot" & "boot"

If you copy that to the SD card and at the menu choose "ALT SDC Recovery" it should load..... ==> what would load and where will go then?

==> that will not be a problem to scroll and navigate this way, as soon as is safe to use it...

==> U mean "external SD card" which is inside, right?

==> Better to eliminate the risk and play with the reliable & proven way, better without headache and bad surprises :)

==> Sounds much better and reliable method, which I see you would recommend to follow, right?

==> My call is to stay safe along with your best recommendations. Do you think "flashable_TWRP_3.1.0-0" would be better to use its recovery.img, here I have attached the file.

I follow u!
[Barnes & Noble Nook Tablet] aykov77:
Do you think "flashable_TWRP_3.1.0-0" would be useful with its recovery.img or there is danger for use?

Thanks Bro, still waiting for 8 GB SD card class 10 to be delivered.
[Barnes & Noble Nook Tablet] nmyshkin:
That's a flashable recovery. That means it ends up on the internal (emmc) of the tablet, not the sdcard. AKAIK version 2.8.6 (or the custom 2.8.0) is the last version made to run from the sdcard. As these versions age they become less able to flash newer ROMs so they are mainly used for simple maintenance tasks AND flashing emmc recoveries like the one you mention.

But if your tablet has a melt-down and you can't access the internal recovery then the sdcard recovery remains an important rescue tool, no matter how old it is.
[Barnes & Noble Nook Tablet] aykov77:
Thanks for this valuable advice, will not risk on emmc. Still awaiting my 8GB class 10 card and probably on mon/tue tomorrow will have my option to try it... realy hope to manage with BackUp and continue with your P#60.
[Barnes & Noble Nook Tablet] aykov77:
==>Lucky me I ended up exactly here. Today my cousin managed to bring me the 8 GB class 10 card and attaching all photos numbered in consecutive way you can see how everything was progressing.

==> It looks like the flash was not OK and neither with "flashable_CWM_6.0.4.5_chrmhoffmann" nor with "flashable_CWM_6.0.4.8_chrmhoffmann"... After rebooting is same... On Photo 19: with or without Zip File signature verification neither one CWM does not work to complete the Installation...

===> Here I expected to come but... another headache now :( Please help!

:(
[Barnes & Noble Nook Tablet] nmyshkin:
WOW.

I don't know where to start. The most disturbing thing is image 15. I've never seen that "sdcard data" option before, and I've done a lot of flashing with TWRP 2.8.6.

Does the tablet still boot into the B&N system?

If you select internal recovery (emmc) from the Cyanoboot menu does it go to CWM? Or does it start the stock recovery?
[Barnes & Noble Nook Tablet] aykov77:
==> I changed the recovery file on the SD card with TWRP 2.8.6, not TWRP 2.8.0.0, where I presume TWRP 2.8.6 is newer version then TWRP 2.8.0.0... and everything ended up with Happy End :) Please check the photos attached 1-11

I used "flashable_CWM_6.0.4.8_chrmhoffmann" in stead of "flashable_CWM_6.0.4.5_chrmhoffmann", hope all will be fine ?

==> No, it remained only on the white Nook screen P3 without uploading anything when the SD was out.

==> This I didn't try, I decided to change the recovery file TWRP 2.8.6, not TWRP 2.8.0.0 and to see how it will be...

THANKS BRO!

nmyshkin said:

5. Flash the CM13 ROM zip. This places the new OS in the emmc (internal storage). Once this is done, rebooting the tablet brings it to setup mode just as if you were starting up a new phone for the first time.

a. Select the cm13 zip file to flash (see screenshot below).

b. Use the slider to execute the flash.

c. Return to the TWRP home screen.

d. Remove the SD card (keep somewhere safe!!!) and tap on "Reboot". Select "System" or "Power down". If you select "System" the tablet will reboot into the setup for CM13. There you can choose your language, set up the time zone, and Wi-Fi (untick or skip the business about feedback to the Cyanogenmod project; it's dead). This is basic Android out-of-the-box setup.

To turn off your "new" tablet, press and hold the power button until the "Power Down" option appears. Tap that.

More later, once you get this done.

Good luck :)

==> What will be the next step, "xposed-v89-sdk23-arm" & "mapsv1.flashable" ?
[Barnes & Noble Nook Tablet] aykov77:
--Lock screen shortcuts (used to clear phone, camera, etc. from lock screen) ==> How should I use this? Is it good to be used?

How can I change the Lock Screen picture? I lost the way after finish all... :(

Thanks Bro, all done as described, only what you stated in 3. Place any wallpapers you want to try in /storage/0/Pictures/Wallpapers. To change the wallpaper....

-I cannot locate exactly the path /storage/0/Pictures/Wallpapers... could you check pls on attached pics if that is the right place or how to do it in the location of the internal emmc wallpapers as per your path... Now they are in storage/emulated/0/Pictures/Wallpapers :(

-Why every time when the screen is activated after sleeping mode the display is locked in 270 rotation as indicated on 11.jpg? after unlocking with the slider the screen is in Portrait 0 deg as normal?

-Do I need to install "Simple keyboard"? Do I need that? intention to use only English & Bulgarian language?
[Barnes & Noble Nook Tablet] nmyshkin:
Based on your first image you don't need it. These ROMs began as phone ROMs so they have bits of irrelevant stuff. Sometimes there are phone or camera shortcuts on the lock screen. Not in this one I guess.

Settings>Lockscreen>Wallpaper

Yes, that's right. Sorry.

Unfortunately the default screen orientation is baked in. For tablets it is usually landscape.

Since you have the 16gb tablet you may not have problems. Just see how it goes. Does Bulgarian use Cyrillic and is that available from the stock keyboard?

Looks like you're ready for the next steps. I'll get to work on that today.
[Barnes & Noble Nook Tablet] aykov77:
==> Right, I got it, no such shortcuts applicable to the phone versions, clear from unnecessary apps & shortcuts.

==> Even I changed once, today few times I was there but my wrong thinking was if I change the Wallpaper, it will affect the home screen, but not the Lock Screen :)

I got it, reasonable explanation, no way to change it to portrait view... OK, good!, Will change the orientation of the image used for the wallpaper lock screen :) but the date and the clock will remain the same orientation... is there option to turn off the clock & date indication on the Locked Screen without affecting the Home screen, not sure about, but need to dig inside the settings...

==>Yes, all is OK now, Bulgarian BDS I dont need, but Bulgarian QWERTY is OK :)

Ready! Thank you so much Bro!
[Barnes & Noble Nook Tablet] nmyshkin:
The real problem is the boot animation. You can see that if you're using the tablet and you leave it in portrait mode, the lock screen comes up in portrait. But since the boot animation is in landscape that's the way the initial lockscreen is.

No, there is no way to remove the date and clock from the lockscreen,

More abstract images often work better for wallpaper so that orientation changes do not make them look ridiculous.

I notice in the images in the previous post that you seem to have a permanent(?) notification for the SD card? Did that go away? Usually that appears when you insert the card and then you tap on it to set up the card as "portable storage". Then it disappears.
[Barnes & Noble Nook Tablet] aykov77:
Any chance to stabilize the lock screen in portrait mode permanently? not changing to landscape?

Good solution

Here you mean the small SD card symbol in the left top corner of the display, right?

After sliding off down and then to the right it disapeared and after reboot stay off, not there.

Only once I connect the USB to PC is comming to set for file transfer, not for charging only... should that choice coming every time when usb cable is connected to the PC for file transfer?
[Barnes & Noble Nook Tablet] nmyshkin:
I have a third party app I use to control the orientation of Koreader so it's always portrait. The app doesn't seem to like the way the tablet uses screen orientation so I had to force it.

One of the app options is the Lockscreen orientation. I've tried it out and it "works" but there is a short delay after boot when you see the lockscreen actually rotate to portrait. There may be better setting options. I only tried one.

Do you want to try it?

OK, good. It should not be there all the time.

There used to be a setting (or maybe it's later ROMs...) for how USB should connect by default. But it never worked....

Ah, I found it: Settings>System>Developer options>Networking>Select USB Configuration

Try that. You may get lucky.
[Barnes & Noble Nook Tablet] aykov77:
==> Better to stay with the landscape orientation instead of having delay in the response time, I need proper response in the old spirit of my new awaken Grand Booky Nooky ;)

==> It is not, even after rebooting :)

==> I did, as per the attached photos now is effective with the USB connection, only the head icon in the left top corner during connection, I set MTP for transfer of books, music, photos and movies

What abt 'ADB over network' & 'Revoke USB debugging authorizations' in Developer options, should they stay inactive?

Happy for next :)
[Barnes & Noble Nook Tablet] nmyshkin:
If you want to try and ditch the little android icon for USB connection, you can turn that off at Settings>System>Developer Options>Debugging>Debugging Notify

This seems to work for me. The pull-down is still there in case your MTP setting is not persistent, but the little icon is gone.

The last two settings you mention should generally be inactive.
[Barnes & Noble Nook Tablet] aykov77:
==> If I turn that little android icon off, will I be able to change back to on if I need to or better to stay off for indefinite time, same as yours? Do I really need this icon there... for what? Better off?

==> In what case MTP setting need to be changed when now will be able to transfer all files... what is better?

==> Good, no doubt now.

THANKS!
[Barnes & Noble Nook Tablet] nmyshkin:
It really makes no difference except as an alert because if you pull down the notification window you will still see that it is charging, or file transfer or whatever, and can tap to change if you want. Try it and you'll see.

Only perhaps for ADB access and manipulations. I'm thinking that's not going to be you.