yashsingh1/xdaforums huggingface dataset:
[Android Stick & Console AllWinner based Computers] observingman:
Hello !

A lot of people like me got this 'gift' tablet (in Spanish, we call it "the lamentablet", because it is "lamentable" = "terrible"):

https://www.the-china-office.com/t8100-tablet (here you can see full specifications)

That b***c allows us to unlock its bootloader, but in order to root it, we need to have the boot.img to apply magisk on it.

But the thing is that we cannot obtain it, nor dump the firmware, just in case... So, we are stuck.

Also in the docs on that webpage, it's a mention to a link with the firmware, but it is not available.

There is also no OTA update to play with...

Is there any way to obtain that boot.img / get all the partitions ? I've tested to make an adb shell to make commands to dump the partitions, but it says "it's closed", so not allowed.

I've tried to find a TWRP version but hey, guess it... There is none.

So, ... Got any ideas, you... GREAT "TECH GURUS" ?

Thanks in advance !
[Android Stick & Console AllWinner based Computers] gdpt:
I have the same tablet, and would like to know if anyone has made some progress on this. As for now it's an useless piece of ****. Would like to play around with it, I can think of a couple uses for it. Thanks
[Android Stick & Console AllWinner based Computers] 3mel:
can you boot into recovery and if so can you use ADB from there ?

cat /dev/block/boot > /sdcard/boot.img
[Android Stick & Console AllWinner based Computers] gdpt:
I managed to reboot into recovery with ADB, but I get the following Error

C:\Program Files (x86)\Minimal ADB and Fastboot>cat /dev/block/boot > /sdcard/boot.img

The system cannot find the path specified.

What should I do?

UPDATE: Managed to unlock the bootloader with fastboot oem unlock command. I needed to install the Allwinner A100 drivers though, was stuck in a bootloop before that. Will now try to install Magisk.

This is what I got regarding the file system

Filesystem 1K-blocks Used Available Use% Mounted on

tmpfs 495652 604 495048 1% /dev

tmpfs 495652 0 495652 0% /mnt

tmpfs 495652 0 495652 0% /apex

/dev/block/dm-3 592852 591024 0 100% /

/dev/block/dm-1 113696 113344 0 100% /vendor

/dev/block/dm-2 689644 687556 0 100% /product

/dev/block/nand0p17 13316076 796656 12519420 6% /data

/dev/block/nand0p7 757680 968 733120 1% /cache

/data/media 13316076 796656 12519420 6% /storage/emulated
[Android Stick & Console AllWinner based Computers] Viva La Android R.I.P.:
Did you get this worked out? If not, you made reference to an OTA update file. If you have the OTA update.zip, upload it to Google Drive or other file host and post a download link. I should be able to extract the boot.img and recovery.img from the update archive. (If your tablet has a boot image devoid of a ramdisk, you will need to root using the ramdisk from the recovery.img). To determine ramdisk status, install the latest Magsk app on your tablet. Open the app and look for "Ramdisk" in the top section of items listed. If you see a "Yes," standard boot.img patching will work. If it indicates a "No," you'll need a recovery.img.
[Android Stick & Console AllWinner based Computers] digitalDelay:
I was "given" (lol) a Qlink Scepter 8 tablet(AKA Obama tablet): exdroid sun50iw10p1 which cross references to an $49 retail Chinese ALLWINNER T8100 A100 tablet.

As the OP already stated: out-of-the-box this is an unusable POS.

I'm leaving this breadcrumb for the next poor person who inherits one of these... I spent over a hour doing research and reached a dead end.

The ARM is working at 32bit... no idea why... forcing it to 64bit will help. But why bother? A 10 year old low-end Samsung tablet would still be faster (and more stable).

If I had the boot.img, maybe I would spend a little more time with this.

Good luck and Godspeed.
[Android Stick & Console AllWinner based Computers] ahmedao1:
I have this tablet allwinner a100 t8100 bricked BND-A863-CV2.0.Please help me with firmware
[Android Stick & Console AllWinner based Computers] SamuEDL:
Good guys, I leave the boot.img for Tablet T8100 and patched with Magisk. Works correctly on the Rom Stock (Android 10 GO) on tablet T8100 with motherboard BND-A863-CV2.0.

View attachment 5547199

As a curiosity, I am currently using GSI Roms on my tablet. The problem is that Roms based on Android 11 and 12, the Gyro Sensor does not work. On Android 10, if it works

View attachment 5547205

Edit: I attached also the dump of the Rom Stock of my Tablet, in case someone needs it. https://www.mediafire.com/file/h0hnqhwah2qyf7y/RomStockT8100.zip/file

Only can be flashed by fastboot as a dump and only if you have an unlock bootloader.
[Android Stick & Console AllWinner based Computers] TiagoG3400:
Hi.

My tablet is constantly restarting and I want to reinstall the system. I have already formatted it by bios but it's still the same. How can I install this recovery by ssd card ?
[Android Stick & Console AllWinner based Computers] SamuEDL:
Can only be installed via fastboot
[Android Stick & Console AllWinner based Computers] TiagoG3400:
But to use fastboot i have to pass those files to the sd card or i have to connect the tablet to the computer ?

If it is necessary what program do I use to install the software ?

Do I need to use the bios ?

Thanks !
[Android Stick & Console AllWinner based Computers] SamuEDL:
You have to connect it to the PC, but possibly you can not do much with the blocked bootloader.

PD: To put the tablet in fastboot mode press VOL - and POWER. To know if it is in FastBoot mode, there will be an image of an Android.

Instructions

1. Download the ADB / FastBoot Tool (https://developer.android.com/studio/releases/platform-tools#downloads)

2. Unzip it next to the backup files

3. Opens a cmd and introduce the following commands:

4. Done.

------------------------------------------

By the way you guys, I tried to introduce the ROM from the Q-Link Scepter 8 tablet at the T8100. But without success, Phoenix (Pro and Suit) is blocked and not flash. Even though the motherboard were similar. A pity, it would have been fine to join communities.
[Android Stick & Console AllWinner based Computers] TiagoG3400:
the tablet is connected but not recognised. do i have to install the tablet drives on the pc ?
[Android Stick & Console AllWinner based Computers] SamuEDL:
In my case, I have not had a problem of drivers. But use the Google driver "Adb Bootloader Interface"

View attachment 5549197
[Android Stick & Console AllWinner based Computers] TiagoG3400:
Sorry for the trouble I'm giving you, but I'm having a lot of trouble with this tablet.

now i have the drives but i have this error ...

after running the command in cmd, the tablet restarts but still has the same problem
[Android Stick & Console AllWinner based Computers] SamuEDL:
It happens because you have the blocked bootloader. Try to put the next command, although I do not think it works when not previously activated in settings:
[Android Stick & Console AllWinner based Computers] TiagoG3400:
it doesn't work, if i can unlock the bootloader can i reinstall the system on the tablet to make it functional ?

Must be tricky to do that
[Android Stick & Console AllWinner based Computers] SamuEDL:
Yes, if you can unlock the bootloader. You can use that dump, to fix the tablet
[Android Stick & Console AllWinner based Computers] JaCoelho:
Hi Tiago, did you find what you looking for to unlock the bootloader for this tablet?

Many thanks in advance
[Android Stick & Console AllWinner based Computers] Cosmin David:
Can you provide a gsi rom, or link to it that works on this device?

thank you
[Android Stick & Console AllWinner based Computers] SamuEDL:
This is what I currently use: https://xdaforums.com/t/gsi-10-lineageos-17-x-gsi-all-archs.4004673/
[Android Stick & Console AllWinner based Computers] Cosmin David:
Do you use any custom boot or/and vendor image? i allready tried a few of the roms on that page and i always end up with a boot loop. The ones i used are based on ARM or A64, did chose the right ones?

Can you give me some intructions on how to install it properly in order to boot?

Is there any Twrp or any similar funcional custom recovery for this device ?

Thank you in advance
[Android Stick & Console AllWinner based Computers] SamuEDL:
I use the boot modified with Magisk and roms GSI arm32_binder64-ab (pphusson) / a64_bvS (LineageOS).

P.D: In roms superior to Android 10, the gyrosensor does not work.

Instructions:

0. Get an up-to-date fastboot on your computer (fastboot —version should give version >= 29)

1. Get vbmeta.img from https://dl.google.com/developers/android/qt/images/gsi/vbmeta.img and get product_gsi.img from https://xdaforums.com/t/tutorial-magisk-on-gsi-on-devices-with-dynamic-partition.4311045/

2. Start bootloader mode from the tablet.

2.1 From running Android do

2.2 With the tablet turned off. Press the volume - and power button.

3. When you start the bootloader, enter the following commands

4. When you see the Recovery fastbootd, enter the following commands

5. Finally, move with the volume buttons to "Enter recovery". Then a "wipe data/cache" and confirms.

6. Reboot and enjoy
[Android Stick & Console AllWinner based Computers] Cosmin David:
Thank you for all the help 😁
[Android Stick & Console AllWinner based Computers] zesoares954:
hello guys...me too have this problem....help me please.....
[Android Stick & Console AllWinner based Computers] Cosmin David:
Hi, download platform tools https://developer.android.com/studio/releases/platform-tools#downloads

open cmd as administrator
[Android Stick & Console AllWinner based Computers] zesoares954:
bom dia. És Português? eu pergunto por o teu Windows estar em PT .olha eu fiz os passos como me disseste ate a parte do cmd....depois da me este erro.....sabes o que sera......?
[Android Stick & Console AllWinner based Computers] Cosmin David:
Bom dia, sou português sim, no fórum tens quê falar inglês. Adb devices só é usado quando a tablet está ligada e quando tens a depuração ligada nas opções de programador, em modo fastboot ou bootloader usas fastboot devices , queres fazer o quê com a tablet rootear?
[Android Stick & Console AllWinner based Computers] zesoares954:
no my friend...i already unstuck lol, but i whant to reset him because my soon dont remember the email before hard reset......now i have the tools to clean him totaly but i dont have the drivers to conect the tablet to pc......dont recognized....can you or any one have the driver for this tablet?
[Android Stick & Console AllWinner based Computers] zesoares954:
:cry:
[Android Stick & Console AllWinner based Computers] zesoares954:
where you went to get the usb driver that pops up here?
[Android Stick & Console AllWinner based Computers] Cosmin David:
Install this first if you didn't do it already

[OFFICIAL][TOOL][WINDOWS] ADB, Fastboot and Drivers - 15 seconds ADB Installer v1.4.3

15 seconds ADB Installer v1.4.3 ADB, Fastboot and Drivers What is this? This is All-in-One installer for 3 most needed PC tools for Android. No need to download big SDK for 3 small things. I originaly made it for my Kurdish friend AnGrY DuDe in...

xdaforums.com

You need to choose permitir a escolha a partir de uma lista ..
[Android Stick & Console AllWinner based Computers] zesoares954:
now install the google drivers very welll....its shows this....but when i try to find out in cmd.....nothing....
[Android Stick & Console AllWinner based Computers] zesoares954:
i dont know what i m do wrong...dam....
[Android Stick & Console AllWinner based Computers] Cosmin David:
Did you enabled developer settings (opções de programador), if you didn't go to settings ,then enter the menu called about device (acerca do tablet) then press/tap 7 times on the build number (número de compilação) after that go back to yours settings / system and under advanced (avançado) ,you will see developer setttings ( opções de programador) under this menu, enable OEM unlock (desbloqueio de OEM) and Usb debugging (depuração Usb) then go back to your CMD window and type adb devices, then on the tablet will pop up an confirmation window, just allow it. And your good to go in adb mode.

If you want to do a factory reset, type adb reboot bootloader

Once you are in fastboot mode type fastboot -w or fastboot reboot recovery if you want do it manually
[Android Stick & Console AllWinner based Computers] Cosmin David:
Is there any way to install gapps without a custom recovery?

Im currently using/testing DirtyUnicorns-14.0_111119-A64-AB and Havoc-OS-3.0_101119-A64-AB

Thank you
[Android Stick & Console AllWinner based Computers] SamuEDL:
I think there is a Magisk module to put the GAPPS. But I do not know if it works, since I do not use GAPPS.
[Android Stick & Console AllWinner based Computers] Cosmin David:
I found a better and more stable rom with better ram management compared to stock

Is based on android 10 with go gapps included and super su

system-quack-arm32_binder64-ab-go

direct download link bellow

https://github.com/phhusson/treble_experimentations/releases/download/v222/system-quack-arm32_binder64-ab-go.img.xz

Is simple to install, just follow SamuEDL Instructions:

0. Get an up-to-date fastboot on your computer (fastboot —version should give version >= 29)

1. Get vbmeta.img from https://dl.google.com/developers/android/qt/images/gsi/vbmeta.img and get

product_gsi.img from https://xdaforums.com/t/tutorial-magisk-on-gsi-on-devices-with-dynamic-partition.4311045/

2. From running Android, do adb reboot bootloader (dont forget to oem unlock first)

3. When you start the bootloader, enter the following commands

4. When you see the Recovery fastbootd, enter the following commands

5. Finally, move with the volume buttons to "Enter recovery". Then a "wipe data/cache" and confirms.

6. Reboot and enjoy

I had to test 20 plus roms before i found this one.

also thanks to phhusson for this rom
[Android Stick & Console AllWinner based Computers] franchu29:
I have a problem installing this rom.

This step ok: fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img

Problem when I do: fastboot reboot fastboot

It has hung on the screen with the robot lying down, it doesn't matter if I restart, + volume button - volume button doesn't matter, it doesn't start

could someone help me?
[Android Stick & Console AllWinner based Computers] Cosmin David:
Did you did the OEM unlock under developer setttings? Also did you typed in fastboot mode, fastboot oem unlock , if you did continue to the next step, go to device manager and update the driver if it shows up as USB developer, then go back your platform tools CMD window and type fastboot devices
[Android Stick & Console AllWinner based Computers] franchu29:
Thanks for your help.

I check oem unlock in developer options menu

I didn't do was the fastboot oem unlock command (I didn't see it in the instructions)

My problem is that now it doesn't start, it doesn't recognize adb or fastboot.

In device manager it appears as android adb interface (attached screenshot)

The tablet starts and stays on screen with robot (attached screenshot too)

any idea how to solve?
[Android Stick & Console AllWinner based Computers] Cosmin David:
You got the wrong driver, right click on the device uninstall, disconnect the tablet after that install this

https://xdaforums.com/t/official-to...vers-15-seconds-adb-installer-v1-4-3.2588979/

After installation reconnect your tablet to your PC and you should see USB developer( in device manager) right click update driver choose the driver from a list.. select android phone , Google , bootloader interface

Go back to platform tools start CMD as administrator set root folder cd your path to platform tools, then type fastboot devices, at this point you should see your device, after that run the command fastboot reboot fastboot it should reboot to fastbootd, in fastbootd run the commands listed, one by one
[Android Stick & Console AllWinner based Computers] franchu29:
Thanks, now i can restart and enter in fastboot mode

My problem now, the comand fastboot oem unlock dont work, it say:

FAILED (remote: 'Command not supported in default implementation')

fastboot: error: Command failed

how can i do?

Very thanks for your help
[Android Stick & Console AllWinner based Computers] Cosmin David:
Go back to system , fastboot reboot ,comfirm if you did enabled OEM unlock under developer setttings
[Android Stick & Console AllWinner based Computers] franchu29:
Very Very thanks

All working
[Android Stick & Console AllWinner based Computers] Cosmin David:
Happy to help 😁
[Android Stick & Console AllWinner based Computers] Sigidr:
Hi guys,

I received this same gift tablet and after 2weeks of (barely) using it, it's stuck in a boot loop.

I see the allwinner logo, the screen goes back off and the logo appears again, this goes on until the battery dies, and i can't even turn it off, it responds to the on/off and reset button (the logo disappears instantly) but after 1sec it's stuck again.

I finally found a way to turn it off so i could enter the menu (using vol.up and power button), i wiped all data but nothing changed.

Now i'm looking for a way to reinstall it's firmware but i don't have any experience on this...

Connecting it to my pc is useless, it doesn't get recognised (it only charges) so i was thinking about using the 'update through sd card' option, but what files should i put on the sd, where can i find them?

Any help would be very welcome

Grtz,

Sigidr
[Android Stick & Console AllWinner based Computers] SamuEDL:
If you don't have the bootloader unlocked, it can't be recovered at this time.
[Android Stick & Console AllWinner based Computers] Baio98:
Buongiorno, ho utilizzato il file boot.img quello linkato da te, ho scaricato magisk e ho installato boot.img tramite magisk. il bootloader l'avevo sbloccato (opzioni sviluppatore -> sblocco oem) però è andato in brik. All'accensione mostra un robot verde con la pancia aperta (sia che faccio vol+ +,,accensione, sia che faccio vol- + accensione). Quando funzionava l'avevo messo in modalità fastboot, c'era un titolo tipo modalità fastbootlb. Facendo fastboot devices mi usciva il tablet. Ora con questa schermata non viene riconosciuto ne adb devices, ne fastboot devices. Non posso reinstallare il sistema operativo perché non mi esce nessun menù.

Qucuno è in grado di aiutarmi per favore? :( Andrebbe bene anche senza modifiche, con il software di fabbrica.

Grazie mille,
[Android Stick & Console AllWinner based Computers] SamuEDL:
As long as you don't install the fastboot drivers you won't be able to recover it. For this you will have to force the drivers. The device "USB Developer", uses this driver:
[Android Stick & Console AllWinner based Computers] Baio98:
Sorry I didn't read your first answer, it worked great! Thanks thanks thanks
[Android Stick & Console AllWinner based Computers] Zeh John:
Hi all!

I got this Lamentablet as a promotion, paid €2 for it.

Rooted it and deleted most crap with ADB, so it doesn't have so much Google junk eating up it's mere 1GB of RAM. Much faster and more stable now.

But even so I've noted it crashed every once in while, sometimes it just turned itself off midnight... It's more stable since last reset, the OS was rotting worse than Windows to the point it lost my Google Account and couldn't create another one, the Google Play Store and YouTube stopped working...

Now since the reset it just crashed only once when, in a pattern that usually makes it crash is when I have the Power Saving, Data Saving and Night Light widgets enabled and i turn off Night Light (sorry for bad translation, my OS is in Portuguese).

So, my questions:

1) Has anyone else noticed the tablet crashing when playing with those mentioned widgets?

Are your OS stable or do they crash out of the blue?

2) Before restoring the OS, I had the SD card formatted in exfat (I find FAT32 obsolete and insecure for data integrity with a 32GB card on an always crashing device!).

Now the OS did not recognize the card formatted in exfat. Can't remember what I did last time.

Does anyone know how to get the OS to recognize an exfat uSD card?

3) Does anyone know about any custom firmware for this device? The original OS sucks!!! I run LineageOS on my phones but this tablet is not supported.

I just use this tablet to read the news on a browser and watch videos on YouTube and from the uSD card.

So, specially having this tablet just 1GB of RAM, something minimalist would be nice...

4) Does anyone knows any way to make a full system image backup and restore of the OS?

Like I used to do with Clockwork Mod and TWRP Recovery?

Even if just for the original Android 10Q ROM. Reconfiguring everything is a PITA... :(

5) By the way, does anyone know how to run TWRP Recovery on this device?

6) Probably a new kernel would be enough for the system to become more stable. Does anyone know where to find another one and how to install it on this device?

(that would also be pretty neat to use some old software I have to control CPU speed that does not work anymore, I'd like to reduce battery usage)

Many thanks for any reply!
[Android Stick & Console AllWinner based Computers] mariosk87:
I have the tablet bootlooping when A100 appears, i cant wipe data or go to recovery. I need to reinstall all the system but i have the bootloader locked. The uniq way to reinstall the FW is unlocking the bootloader, is there a way to unlock through fastboot?
[Android Stick & Console AllWinner based Computers] SamuEDL:
There is no solution, for users who have the bootloader closed. Since the only way would be to install the firm with phoenix, but we do not have any image compatible with this program and the manufacturer does not respond when we have requested it.
[Android Stick & Console AllWinner based Computers] Zeh John:
Would you please kindly clarify?

What is Phoenix? The proprietary installer software from Allwinner? From what you wrote, I understand it does not work with the regular images we flash, like the one supplied up in this thread.

Thank you, cheers.
[Android Stick & Console AllWinner based Computers] SamuEDL:
I will answer some:

3. There are no custom roms for the tablet. But it is compatible with GSI images (We have already discussed it in this thread). In my case, I use LineageOS 17.1 GSI and it works quite well.

4 and 5: We do not have custom recovery.

6. Not have custom kernel

In short, we don't have custom rom, recovery and kernel. We only have stock rom (fastboot) and GSI roms.

P.D: We don't have the source code either. Also here is a prebuilt source code, in case someone wants to try to do something (It is not mine). https://github.com/lineageos-on-allwinner

Exactly, it is the proprietary program of allwinner and the images have to be made for this program.
[Android Stick & Console AllWinner based Computers] Zeh John:
SamuEDL, thank you so much for your reply and for all the support you've been giving along this thread for this device. So yes indeed this is a Lamentablet and we're pretty much stuck on it!

I've seen the links you've provided for the GSI but I'm not a coder, and I really get lost in GitHub even when I just have to download a simple installation file for something in Linux, that interface boggles my mind!

So I do not know what to find and download from there.

Not quite a noob here but I'm not very experienced with Android, it's such a not uniformely spread all over the place ecosystem, specially on the newer versions, I get easily lost and stuck. Before resetting my tablet I managed to connect it to my Linux PC and mount it's system RW and delete some crap, even some folders from the filesystem, and now I can't do it, I wanted to modify its hosts file to block ads but although it states that the system is mounted RW I cannot write to it as it states zero bytes free space...

So can I kindly ask you to provide some link to download a workable LineageOS 17.1 GSI image, please?

And also some general guidance for installing it. Yes I already have the bootloader unlocked and rooted my device, and know how to connect it to adb and fastboot.

Truly appreciated, once again, many thanks!