yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A8 (2021)] nonameformefree:
This Tab A8 Wifi is working with a SuperImage, so you have to flash it in fastbootd mode.

How to go in fastbootd Mode:

1. TWRP -> reboot fastboot

2. On PC "fastboot reboot fastboot" this restarts your Tab in fastbootd mode and it´s resize the Partition himself, when you continue with your Number 3

but for what is your point 4?
[Samsung Galaxy Tab A8 (2021)] nonameformefree:
To the Starter and Community: Thank you it works so far.

But what i see for this Lineage-Rom:

It is for LTE Systems. Tab A8 didn´t have a Modem.

The Gallery isn´t integrated. We can´t change the Wallpaper

And the Data-Connection via USB to PC dosn´t work.

when anyone find a rom what is working better on an GTA8, tell it here please.

best regards

ps who find misspelling´s, can keep it. ;-)
[Samsung Galaxy Tab A8 (2021)] lewmur:
This ROM is for the wifi not the LTE divice and it is working fine on mine, including USB to PC data transfer. I think all GSI ROMs include the phone apps. Don't know about Gallery 'cause I'm using one from PlayStore but it is changed from default.
[Samsung Galaxy Tab A8 (2021)] stradfred:
I have always this error after flash

I have the last platform-tools_r33.0.3-windows
[Samsung Galaxy Tab A8 (2021)] nonameformefree:
looks like, not the fastbootd Mode
[Samsung Galaxy Tab A8 (2021)] nonameformefree:
It wasn´t work on my one.

I have changed to lineage-19.1-20221122-UNOFFICIAL-arm64_bvS.img and all works fine
[Samsung Galaxy Tab A8 (2021)] nonameformefree:
But tell me, what is happend, when you try to change the wallpaper in on from your pictures?

here it will allways open the contacts.

Anywhere a help to install gapps later? But without twrp zip install, because twrp didn´t find the data partition. when i go after a lineageos install, back into recover twrp says data 0 MB

EDIT: all checked, not needed anymore
[Samsung Galaxy Tab A8 (2021)] 5dPZ:
I am newb to Samsung devices (will grab this tablet tomorrow), would these steps correct to flash this ROM?

Enable USB debug and OEM unlock under Developer Options (if there is one for Samsung)

Boot into bootloader mode (if there is one for Samsung)

Use fastboot to unlock bootloader (or is Odin required instead of fastboot?)

Use fastboot to flash TWRP recovery (or is Odin required instead of fastboot?)

(Is root required for unlock/recovery/ROM?)

Format data from TWRP.

And wipe all partitions

Extract system.img posted by OP

Fastboot flash system system.img

Go to TWRP and Flash Gapps (if required)

Any help would be appreciated.

Also, is LineageOS 20 planned any time soon (say...within 2 months @WackyHacky1 or any devs)? Thanks!
[Samsung Galaxy Tab A8 (2021)] nonameformefree:
hello, i was given numbers.

1 + 2 ok

3 install Magisk -> create boot.img -> flash boot.img as BL with Odin

4 (unlock) push 7 sec. volume up on first download screen and in the next window once again vol up to unlock bootloader

5 flash twrp as AP with Odin (after this flash/reset DIRECT in the recovery mode by push an hold power and volume up button

6 Format Data with twrp

7 wipe all partitions

8 twrp reboot to fastboot

9 Console:

1 fastboot reboot fastboot

2 fastboot flash system system.img

3 fastboot -w

4 reboot to system and enjoy

In the Lineage IMG.s is the origin Gallery not anymore included and you obtain a error when you try to change the wallpaper. You can fix this issue by install the origin Gallery2.apk later

if you have later problems to connect with an windows pc you have to toggle between Data transfer MTP PTP and who control this connection
[Samsung Galaxy Tab A8 (2021)] arutsuro:
It has KCAL enabled? The only thing I want is improve the screen colors moving gamma controls.
[Samsung Galaxy Tab A8 (2021)] nonameformefree:
but,.... think on one thing: how the new tab´s working:

you flash system.img and the install goes into a ROM.

When you start your tab, the install of the rom will be loaded in an temporarily space and you can remove some programs you never need. After 1 restart is all back!

Everyone, the have bought the tab for themself and not for google, they have to

create

his own system.img.

Think on one thing: No one need´s google, google need´s YOU!
[Samsung Galaxy Tab A8 (2021)] SevastianXDA:
Bluetooth audio doens't work, any help?
[Samsung Galaxy Tab A8 (2021)] nonameformefree:
No. Still working without mistakes.
[Samsung Galaxy Tab A8 (2021)] pchc_lx:
can anyone speak to improvements / changes / opinions on running Lineage-OS on this vs. Stock One UI5 (Android 13)?

I just got mine, glad to see it's well active here on XDA, but unsure if I need to crack into the custom ROM life just yet. curious if anyone has any strong opinions here. Thanks.
[Samsung Galaxy Tab A8 (2021)] SevastianXDA:
Love it 100000x times more than the stock ROM, the stock ROM is bloated to crap and can be really slow in comparison, but it depends on what you care about (proprietary samsung features won't work).
[Samsung Galaxy Tab A8 (2021)] SevastianXDA:
System won't boot when plugged into power, gets stuck on boot screen (Samsung Galaxy text), when not plugged into power turns on just fine, any potential fix? I believe this is a problem of the GSI not fully supporting offline charging?
[Samsung Galaxy Tab A8 (2021)] domenkoscak:
I tried yesterday to flash this ROM with no success. Can anyone try to help me?

Steps I did:

- with Odin3 v3.14.1 flashed TWRP

- in TWRP formatted data and did factory reset

- rebooted into fastboot

- on Windows ran

fastboot flash system system.img

Then it was just bootloop..
[Samsung Galaxy Tab A8 (2021)] SevastianXDA:
Try formatting data again after doing the flash command on windows
[Samsung Galaxy Tab A8 (2021)] seandpa:
I have lineage 19.1 gsi installed on my sm-x200 everything seems to work well apart from running my sports streaming app. First time using the app the video plays well but if I close the app and restart it later the video is stuck on the imasge it was last playing but audio is playing normally. Any suggestions on possible fix?
[Samsung Galaxy Tab A8 (2021)] domenkoscak:
How did you get it to install? I am stuck in bootloop always.
[Samsung Galaxy Tab A8 (2021)] seandpa:
I just followed all the twrp install instructions followed by format data, advanced wipe partitions then fastboot lineage IMG from linuxmint
[Samsung Galaxy Tab A8 (2021)] lewmur:
The install instructions say to make sure you are running the AVG1 stock ROM but I have the current CVL2 ROM. Will the instructions still work with this ROM?

edit: OOOPS!!! Wrong tablet. That's what my Tab S7 is running. My Tab A8 has CVL5.
[Samsung Galaxy Tab A8 (2021)] domenkoscak:
I am getting the error in attachement after flashing the ROM..

@Vinpinto any help?
[Samsung Galaxy Tab A8 (2021)] SevastianXDA:
Did you try formatting data as I said? That's how I fixed it.
[Samsung Galaxy Tab A8 (2021)] domenkoscak:
Yes, but without any luck..

So I installed TWRP, formatted data, wiped all partitions in TWRP, rebooted to fastboot, ran fastboot flash system system.img, ran fastboot -w and no luck.

I also tried instead of fastboot -w to reboot to TWRP and formatted data from there, but also no luck..
[Samsung Galaxy Tab A8 (2021)] nonameformefree:
In Bootloop, when the Display goes Off press and Hold Power butten + volume up butten until its loading into twrp.

atherwise looks like you have not flashed in fastbootd mode

Take a look to these steps on post #81
[Samsung Galaxy Tab A8 (2021)] domenkoscak:
When the display goes off and I hold the power button and volume up it goes into TWRP.. Will try the steps you provided when I get home today.
[Samsung Galaxy Tab A8 (2021)] domenkoscak:
I just tried those steps but still no luck. But I did notice the command fastboot reboot fastboot didn't work.. It just says this command does not exist..
[Samsung Galaxy Tab A8 (2021)] Vinpinto:
Connect it to your pc, then keep pressed volume up and down at the same time while it reboots, this will force it to go into bootloader mode so you can flash a rom with odin

By the way, you dont need to format all partitions, that is why it went into bootloop, you only need to wipe Data partition.

Read carefully the instructions next time
[Samsung Galaxy Tab A8 (2021)] domenkoscak:
I fixed it.. The problem was, I wasn't using the latest platform-tools.
[Samsung Galaxy Tab A8 (2021)] SevastianXDA:
Formatted data AFTER flashing?
[Samsung Galaxy Tab A8 (2021)] lewmur:
You need to format data or fastboot -w BEFORE you flash system. NOT AFTER. If you do it after, you erase what you just flashed.
[Samsung Galaxy Tab A8 (2021)] SevastianXDA:
No, data is just user data, not the system files you just flashed, I am not talking about "Advanced wipe" features in TWRP. Format data is needed to format/allocate storage for you, the user, to use 🙄
[Samsung Galaxy Tab A8 (2021)] lewmur:
I think you are wrong. That is only true if you wipe data. But if you format it, you also lose part of the system.img you flashed.
[Samsung Galaxy Tab A8 (2021)] domenkoscak:
Nope, formatted before flashing and that's it.

Yes I figured it's better to first format it and then flash and leave after that. The main problem was fastboot and platform-tools, since I wasn't using the latest version. With latest version it went buttery smooth.
[Samsung Galaxy Tab A8 (2021)] SevastianXDA:
Then please proceed to format AFTER flashing and see if that fixes ur issue:/
[Samsung Galaxy Tab A8 (2021)] domenkoscak:
I think you misunderstood me.. I successfully flashed my tablet folowing those steps. I think the problem was in platform tools being outdated.
[Samsung Galaxy Tab A8 (2021)] zfk110:
I want to downgrade stock 12 to any gsi android 11 Idk if its possible on this tab ?
[Samsung Galaxy Tab A8 (2021)] sedablaze:
I don't get it
[Samsung Galaxy Tab A8 (2021)] lewmur:
Warning: If your SD card is larger than 32gb, it has to be formated as ext4 or it won't work with this ROM. In TWRP choose /Wipe/Advanced Wipe check Micro SD and click "Repair or change file system" then "Change File system" and select EXT4.
[Samsung Galaxy Tab A8 (2021)] lewmur:
What don't you get?
[Samsung Galaxy Tab A8 (2021)] sedablaze:
Got it to work but I did find some bugs.. Google calendar don't work, blue teeth don't work properly and I can't update the stupid thing.. also the boot.img I have is flawless flash with Oden and install magisk for your root
[Samsung Galaxy Tab A8 (2021)] sedablaze:
How do you update after install?
[Samsung Galaxy Tab A8 (2021)] Stryxus:
Update to what? If the guy made updates, it would be through the normal android update system or he would make another post guiding you on how to manually do it.
[Samsung Galaxy Tab A8 (2021)] sedablaze:
is there anything betterr for custom roms?? is there only lineonge and android??
[Samsung Galaxy Tab A8 (2021)] Stryxus:
LineageOS is Android. OneUI and LineageOS are skins of Android and the tablet does not have anything else other than this specific build, its not attached to any update stream or anything unless the guy independently maintains it which I doubt.

This is all the supported devices https://www.lineageoslog.com/

While this is all of them currently supported for Android 13 https://www.lineageoslog.com/20.0

OneUI for the tablet is currently on Android 13.
[Samsung Galaxy Tab A8 (2021)] kevinco1:
There are numerous other ROMs and GSIs available for Android including EvolutionX and Derpfest to name a few. However, for this device I haven't been able to install anything other than Lineage OS based ones since the system partition is too small.

To get Bluetooth working install 20, I wasn't able to get that working with any 19 builds.
[Samsung Galaxy Tab A8 (2021)] Stryxus:
If you have managed to get LineageOS 20 to build for the tablet, im astonished. I spent weeks of trial and error and never got it to work after the code compile.
[Samsung Galaxy Tab A8 (2021)] kevinco1:
I never built myself, downloaded them from Sourceforge
[Samsung Galaxy Tab A8 (2021)] Stryxus:
Oh, well that explains why they dont work then. Sourceforge is filled with stuff which doesnt work.
[Samsung Galaxy Tab A8 (2021)] kevinco1:
You need to understand that this tablet is budget, even for Samsung standards and therefore is quite limited in it's capabilities. Most of all the GSIs with countless customization options that I’ve downloaded from SourceForge work fine on my phone, but do not install on this tablet because of it’s limited system partition.

I’ve posted about this in a different thread, but if you are looking for the latest Lineage OS to run on this particular tablet flash this one:

https://sourceforge.net/projects/andyyan-gsi/files/lineage-20-td/lineage-20.0-20230218-UNOFFICIAL-arm64_bgN.img.xz/download

I’ve been running it for the last month and besides no compatibility issues it’s much faster than the stock OS. No hate against OneUI 5, but this tablet’s specs handle Samsung’s latest OS poorly.
[Samsung Galaxy Tab A8 (2021)] kevinco1:
If possible, this thread should have it’s header updated as well as title to reflect. The Lineage 19 build that is linked works, but has so many issues it’s not worth installing and I can understand the frustration in running on it on a daily basis.
[Samsung Galaxy Tab A8 (2021)] Stryxus:
Oh its definitely doable, its just that its dealing with a proprietary board from a backwater Chinese chip designer and doesnt conform to standard Android requirements yet it obviously works if Samsung can get it to work.

Also its not the limited system partition, that is fine, its just packaging the code into something which conforms with the board of which not many of us know about.
[Samsung Galaxy Tab A8 (2021)] lewmur:
First of all, Samsung is NOT a Chinese Co. It is S Korean and is one of the largest co.s in the world. (Guess who makes the Raspberry Pi boards IN ENGLAND) And it IS the size of the system partition that is the problem and that is dynamic and NOT fixed. I've seen the problem on other Samsung tablets where people succeeded in resizing it. The problem is, each tablet has a different partition setup and if you make a mistake you can hard brick your tablet.

IOW, this problem IS fixable. It is just going to take someone with the right expertise to do it. There are even instructions on how to do it by installing a partition manager, looking up the partition info for the device and then knowing what partitions to move to make room for resizing the system. But I don't want to be the first to try it and risk bricking my tablet.
[Samsung Galaxy Tab A8 (2021)] Stryxus:
Um, I never said Samsung Is a Chinese company? I said they use a board and SoC from a backwater Chinese company. And yes it is fixable, its just very proprietary and getting the firmware for all of it is going to be very difficult, iv tried and got most if not all of it but there is no telling how much.

And you are over simplifying the processes of partitioning, every board does partitions differently more than they do it the same. This tablet is missing many partitions you would usually find on a Qualcomm board. I forget which ones exactly since I havent tinkered with this in months. This means Android has to be compiled in a specific way to support all the firmware and partition configuration and how? I do not know.
[Samsung Galaxy Tab A8 (2021)] lewmur:
Android is based on Linux and uses the same partitioning. The partition manager app will work on ANY Android device and give you the exact current partition layout. And every device maker uses it's own partitioning schemes. Not just Samsung. And it changes with every new version of Android. There is no such thing as a "standard" PIT. There is no "compiling" needed to resize partitions. It can be done with simple fastboot commands.
[Samsung Galaxy Tab A8 (2021)] Stryxus:
You just told me you have absolutely no idea what a partition is. This 'partition manager app' will not work on any device also. Things like TWRP have to be compiled for every device its run on in a very similar way that Android does for so many different configurations.

And no, this has nothing to do with partition size, it has to do with what partitions the board supports and how Android is compiled to utilise what partitions it does support.
[Samsung Galaxy Tab A8 (2021)] lewmur:
I built my first computer in 1979 and have been dealing with partitions ever since. And I've been using Linux for 20 years. It appears to be you who doesn't understand them. There is already a working TWRP for the X200 that enables fastboot and fastboot is all that's needed for resizing, creating and deleting partitions. You would ONLY need to recompile TWRP if you modified it to have a button to "Fix System Partition Size".

Edit: You might want to checkout this thread, where the exact same problem was fixed for the Tab A7 using fastboot. Of course it won't work for the X200 because the partition table is different, but it give you the idea of how it's done.
[Samsung Galaxy Tab A8 (2021)] kevinco1:
I'm confused about what exactly a "backwater Chinese company" means?

If this tablet from a South Korean company really has a Chinese board, I'd like see official documentation and also what the model number of said board is
[Samsung Galaxy Tab A8 (2021)] lewmur:
The X200 uses the Unisoc 618 chipset which IS a Chinese co. And the MB may or may not be made in China. Even Apple's iPads are made in China. But the board DESIGN is from Samsung, second only to Apple. And it is all a moot point anyway. The hardware interface is all in the kernel and bootloader and the whole point of GSI ROMs is to remove the hardware, and vendor apps, from the loop.
[Samsung Galaxy Tab A8 (2021)] kevinco1:
Got yeah, every Samsung device or appliance I've owned is always labeled "Made in Vietnam". But the most important part is where it's designed indeed.

IMO, together with LG and Samsung - South Korea has been one of the most innovative countries in tech for a while now.
[Samsung Galaxy Tab A8 (2021)] lewmur:
Hopefully, now that stock Android 13 is out for the X200, someone will come up a TWRP base on it. That will solve the problem and we should be able to install any 13 gsi ROMs.
[Samsung Galaxy Tab A8 (2021)] Stryxus:
It wont solve the problem. TWRP just puts everything where its supposed to be. Android still needs to be compiled for the tablet (of which this is the only working build for this tablet).

Iv personally been able to compile TWRP for the tablet, but again, not Android it self.
[Samsung Galaxy Tab A8 (2021)] lewmur:
TWRP itself won't solve the problem but having one compatible with Android 13 and first flashing stock Android 13 should. Flashing Android 13 should repartition the device, enlarging the system.
[Samsung Galaxy Tab A8 (2021)] Stryxus:
TWRP has supported A13 for months now. And it has, again, nothing to do with resizing partitions. You cant resize a hardware declared partition, the board it self declares all partition sizes which means you cannot put stock Android on anything either unless you configure the Android build to support that boards specific partition configuration and include the tablets firmware inside the build.

Android can not work from nothing and guess, thats not how any of this works.
[Samsung Galaxy Tab A8 (2021)] lewmur:
But TWRP doesn't work on this device with Android 13. You can install it, but the first time you boot to system, even if you already booted to TWRP, it get overwritten. Tried the multidisabler but that did help. And I still say once that is fixed, GSI ROMs with gapps should work.
[Samsung Galaxy Tab A8 (2021)] Stryxus:
It does work, iv done it myself. If you are that lost with all of this, I recommend you stop using it because you seem to be downloading stuff from sourceforge which you have no idea about.

You need to read up a whole lot more on this stuff, you are probably lucky you haven't bricked anything or worse.
[Samsung Galaxy Tab A8 (2021)] lewmur:
You don't know what you are talking about. Just go away.
[Samsung Galaxy Tab A8 (2021)] Stryxus:
Erm what? You are the one who came here trying to challenge what I put while demonstrating you had no idea what you were talking about and iv advices you and now you are randomly acting like I'm evil or something and I should leave.

Well, thats one very confusion socialisation.
[Samsung Galaxy Tab A8 (2021)] lewmur:
One last time. If you are correct, and the only way to change the partitions is via compiling Android, then the author of this guide must be lying. https://xdaforums.com/t/guide-dangerous-resize-system-partition.4315365/

BTW, my "Senior Member" outranks your "Member" status.
[Samsung Galaxy Tab A8 (2021)] Stryxus:
You can only resize a partition if it had not already taken up the full stated size by the board it self which is exceedingly rare and only occurs if you did something wrong.

And, now you are just being plain childish and entitled.
[Samsung Galaxy Tab A8 (2021)] kevinco1:
I have no idea how to resize the partition, but TWRP does work for this device (kinda) and replaces the regular Samsung recovery if you install it right. Easiest way is when you are running stock, download the TWRP app and flash it with the latest version from this thread:

https://xdaforums.com/t/recovery-un...a8-10-5-sm-x200.4488691/page-11#post-88311135

Data is always OMB. You can't make backups and flash anything through this recovery which is why I'm pretty sure you need to do it through fastboot instead.
[Samsung Galaxy Tab A8 (2021)] lewmur:
All you are really saying is that there has to be room to resize. So, yes, you have to decrease the size of the last partition (internal storage) and move any partitions between it and system, to MAKE ROOM. But it CAN, and has been done, on other Galaxy tablets. Is it dangerous? Of course. That's why I won't attempt it. But it IS possible and has NOTHING to do with compiling Android.

BTW: Your ad hominem attachk calling childish just make YOU look childish.
[Samsung Galaxy Tab A8 (2021)] Droid_JD:
Do you know if I am able to flash this los20 build on top of your los19 referenced earlier in the thread?

Has anyone tried it?

Thanks in advance for any pointers/advice your may have too.
[Samsung Galaxy Tab A8 (2021)] sedablaze:
Andy Yan's personal builds // GSI - Browse /lineage-19.x at SourceForge.net

sourceforge.net

I found it.. the the perfect rom for sm-x200.. fac took forever
[Samsung Galaxy Tab A8 (2021)] sedablaze:
Well I pulled an all nighter trying to get 20 to go with no luck.. for me I think I have rounded it down to 2 best files. One that works and the other with the greatest potential.. if it is possible to convert .img to .tar.md5 and I did try with converter.. maybe can flash with oden lineage-19.1-20230323-UNOFFICIAL-arm64_bvN.img.xz as I am I just came across something.. I guess I'm not going to sleep 😪
[Samsung Galaxy Tab A8 (2021)] sedablaze:
lineage-20.0-20230324-UNOFFICIAL-arm64_bvN.img.xz

LET'S FLIPPING GOOOOOO!!!! WOOOT!!! WOOOOT!!

Well she's running smooth. Just has the same problem.. it was crashing every 10 min and I fixed by using graphics driver for all my main apps.. still no blueteeth
[Samsung Galaxy Tab A8 (2021)] sedablaze:
Is there anyone running lineageos 20.0 on the sm-x200?
[Samsung Galaxy Tab A8 (2021)] kevinco1:
As mentioned in this thread previously, 20230218-bgN is the only 20 build where everything works including bluetooth
[Samsung Galaxy Tab A8 (2021)] sedablaze:
Trying to get away from snooping gapps, degoogleing is a hard thing to do and dont think i am ever going to get everything i want. Hearing how google is sencoring what you see and able to download. I trust them about as much as i trust my goverment. You would think they would be on the side of freedom and not communists.. just saying..
[Samsung Galaxy Tab A8 (2021)] kevinco1:
Ahhhh...ok?

Download the vanilla builds of 20230218 which can be found here, free of GApps

https://sourceforge.net/projects/andyyan-gsi/files/lineage-20-td/History/lineage-20.0-20230218-UNOFFICIAL-arm64_bvN.img.xz/download

https://sourceforge.net/projects/andyyan-gsi/files/lineage-20-td/History/lineage-20.0-20230218-UNOFFICIAL-arm64_bvS.img.xz/download