yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series Guides, News, & Discus] Tirofog:
This from the TWRP thread works, the zip didn't. I use Tasker to run the script every boot.
[Samsung Galaxy Tab A series Guides, News, & Discus] lewmur:
The get info apk in that link doesn't work in LOS 19. Does anyone know of one that will? Or of another way to get the GFW id?
[Samsung Galaxy Tab A series Guides, News, & Discus] punteruk:
this is cool, thanks op.....worked a doddle on arch linux, after I followed your instructions for installing TWRP using heimdall

thanks again, u da man! hope you have a happy and prosperous 2022 :)
[Samsung Galaxy Tab A series Guides, News, & Discus] ghoppa:
Sorry, could you explain better how you set up tasker for that? I can't seem to manage to do it. I 've read somewhere that tasker might have problems with sudo commands... thank you!
[Samsung Galaxy Tab A series Guides, News, & Discus] Tirofog:
PM'd
[Samsung Galaxy Tab A series Guides, News, & Discus] Tirofog:
Unable to resize logical system partition in adb, I get this:

mount /dev/block/bootdevice/by-name/system /system_root

mount: /dev/block/bootdevice/by-name/system: need -t

This wasn't happening previously, tried flashed stock firmware but no luck.
[Samsung Galaxy Tab A series Guides, News, & Discus] paziusss:
That's because you flashed a non vndklite variant, with ext4 shared blocks.

You have two options:

1. Use the vndklite, already rw

2. Use a ro variant and unshare blocks. You can follow https://github.com/phhusson/sas-creator/blob/master/securize.sh as a template. You will need simg2img to convert the sparse image into an ext image before mounting/resizing/modifying system.img and img2simg before flashing that image with fastboot
[Samsung Galaxy Tab A series Guides, News, & Discus] Tirofog:
Thank you..

I've tried a few GSI's but experienced freezing in Chrome, XDA and other apps, making the tablet almost unusable.. pity.
[Samsung Galaxy Tab A series Guides, News, & Discus] ghoppa:
Thank you so much @Tirofog, it worked perfectly! 🥳🥳
[Samsung Galaxy Tab A series Guides, News, & Discus] paziusss:
AFAICT just need defconfig changes in order to boot sucesfully. Keep in mind that "succesful boot" means a ssh shell over USB: https://docs.ubports.com/en/latest/porting/build_and_boot/Boot_debug.html

Currently it fails to mount vendor partition, so debugging ends there. The required change was already merged a couple of months ago, in https://gitlab.com/ubports/core/rootfs-builder-debos/-/merge_requests/61 but it is currently unavailable in their CI images.

So we need to wait a bit until ubports/halium is ready for a11. Unless somebody wants to tackle the task of building the entire thing from source.
[Samsung Galaxy Tab A series Guides, News, & Discus] mydjtl:
Where do you find lineage-18.1-20211214-UNOFFICIAL-treble_arm64_bvS-vndklite.img
[Samsung Galaxy Tab A series Guides, News, & Discus] punteruk:
Andy Yan's personal builds // GSI

Download Andy Yan's personal builds // GSI for free. None

sourceforge.net
[Samsung Galaxy Tab A series Guides, News, & Discus] Juppy99:
aww sucks to hear, would be nice to try ubports or halium. Maybe sometime in the future
[Samsung Galaxy Tab A series Guides, News, & Discus] Juppy99:
Would postmarktos also be a dead end?
[Samsung Galaxy Tab A series Guides, News, & Discus] paziusss:
Are we still talking about GSIs or we miss the point completely? :)
[Samsung Galaxy Tab A series Guides, News, & Discus] skills10:
this worked spot on thanks alot dude apart from brightness? now running lineage OS 19 on my tablet
[Samsung Galaxy Tab A series Guides, News, & Discus] lewmur:
Do you have gapps installed?
[Samsung Galaxy Tab A series Guides, News, & Discus] skills10:
no mate, i installed micro G via magisk, i also flashed the brightness fix but based on what ive read afterwards it needs updating
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
For anyone who is struggling to get microG work with the Magisk module, try to install MinMicroG through TWRP instead.

Before you do though, format data. Also, add "system-" in front of "MinMicroG....zip" so it looks like "system-MinMicroG....zip".

Then just follow the steps in OP's guide for installing GApps (Instead of GApps flash MinMicroG in TWRP). 😄
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
Great effort and work, thank you very much!

Unfortunately, Pixel Experience Android 12 in the vndkite AB ARM 64 Variante wont boot up, even with the kernel fix.

Somebody made any expierences to solve this?

EDIT: Tested Lineage 19 GSI:

It runs already quite good: But 2 major things unfortunately:

1. Brightness not working, also after the fix

2. weird issue with magisk: Abnormal State An "su" command that does no belong to Magisk is detected. Please remove the other unsupported su.

3. Device not certified for google play (i guess thats easy to fix)

And ideas? I would very likely to keep it as otherwise it seems to be much smoother than bloaty stock rom...
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
For the brightness, use the one from this thread: https://xdaforums.com/t/rom-sm-t500-samsung-galaxy-tab-a7-10-4-2020-lineageos-18-1.4295985/

Follow author's steps to install them.

You can ignore the Abnormal State in Magisk.
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
Good Day Mate,

thank you very much but unfortunately, that didnt helped, checked it twice.
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
Hmm, did you install the VNDKLITE variant of Lineage?
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
Yeah i did. But i also got weird issue after the installation of the IMG File:

Like when i type fastboot resize, it would instead show me the help section of the fastboot command.

And when i go further to mount or unmount and even typring adb shell, it would say on terminal on the recovery "inaccesialbe or not found". On PC adb shell command works but then following problems occur.

any further steps it would get an error like "no such directory found"
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
Are you running the latest ADB and Fastboot? I had a similar issue and the solution was to get the latest ADB.

You can find it here: https://developer.android.com/studio/releases/platform-tools
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
Thank you very much!

Altough the errors are now gone, the problem still stays..seems like magisk works anyway but the brightness still wont work..
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
Did you remove the .txt file ending and follow these steps? (on Windows/Linux etc.)

"

adb push sm-t500_fixes.sh /tmp

Enter an adb shell

adb shell

Change directories and set permissions

cd /tmp

chmod +x /tmp/sm-t500_fixes.sh

Run script

/tmp/sm-t500_fixes.sh

"

You don't have to do the Magisk fix the script provides btw.
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
Thanks mate but I tried that steps. It looks like it worked the process of that patch but I still got the same issue with the brightness unfortunately.. Maybe it does only work on 18.1?as I tried LineageOS 19
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
I'm out of ideas then. The brightness fix worked on 18.1 and 19 on my device. 🤔
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
Good to know it normally works though! :D

I will try it again. I just reverted to stock again and i was at the beginning already disgusted from the poor stock performance..

Maybe any idea if u did something else than written her?

And which brightness fix did you use? From here or the other one from your link before?

And also pixel expierence wont boot no matter if i use the kernel provided here..it always says at twrp at reboot already no OS installed and then stucks in an endless reboot of the bootlogo
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
Yeah, stock really sucks when it comes to performance.

I didn't really do anything different other than flashing microG instead of GApps. I used the brightness fix from the other one, the one on here does not want to work.

Not sure about Pixel Experience, I prefer to use Lineage.
[Samsung Galaxy Tab A series Guides, News, & Discus] NeilR2:
How is everyone's experience on the latest GSI builds? Is there still performance drops or is that a thing of the past? I mostly experienced that while have 2-3 tabs open in Chrome, the device would basically come to a stand-still.

I love stock OneUI but just simple things are very laggy, such has hitting the recents button.
[Samsung Galaxy Tab A series Guides, News, & Discus] lewmur:
Were you able to register google services on 19? I couldn't find a way to get the GSF ID. None of the Device ID apps seemed to work with LOS 19.
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
I can't answer that, I use microG on the tablet.
[Samsung Galaxy Tab A series Guides, News, & Discus] lewmur:
Don't feel lonely. Apparently no one else can answer it either. I've been asking for weeks.
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
There are GApps builds of the Lineage GSI, have you checked them? Not sure if there is a vndklite variant of those though.
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
Actually I was able to do so. I put in the device ID code into the Google website for registering the device. After that, I forced closed playstore and Pla services and erased all the data. After restart, playstore was fully working. Even DRM was Still LVL 1.

Edit: I used an Version of Mind the Gapps arm64 Version 12. I tried to find the link again but I didn't. I could upload it, if you don't find it by yourself.
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
Since how long do you run lineage (18 or 19?) on your galaxy tab? How is the long time experience? Any issue to be worthy named?

Did someone else got anything else running except lineage 18.1 and 19? Like Havoc OS, Resurrection Remix or crdroid? Or Pixel Experience? I didn't, always got bootloop even with the kernel fix
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
I experienced similar issues at Lineage 19. Mostly when switching from an app by gestures enabled into the app drawer. Somebody can confirm?

Maybe I will still have another look on as I flashed back stock Rom and how you said, the ui is nice but it doesn't have good performance .. If u use gestures it's even more worse. U get all the time lags, when opening notification area, switching apps...

Something I enjoyed in the small run at Lineage 19 it run much better. I was surprised actually by how lot.

But some issues did annoy me. For example lockscreen doesn't go in landscape, that random rear freezings, book cover not working.. But I still consider to have thoose small issues instead of bad performance.. But will first look if there are any ways to reduce lags in stock Rom..
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
Probably for about a month or two. I've used both the 18.1 and 19 in this time period.

I'd say you're getting more performance than on stock but with that comes a problem. Sometimes, the tablet will freeze, Android Interface might crash and force me to restart. I know this can happen when you have a few Chromium tabs open.

Other than that, I don't have a bad time with LineageOS considering I don't multi-task a lot.
[Samsung Galaxy Tab A series Guides, News, & Discus] lewmur:
Even if the ROM came with gapps, wouldn't I still need to register with Google Services?

My problem is FINDING the device ID code. HOW did you find it? None of the apps recommended worked for me.
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
I ain't sure, worth a try to see if it'll work that way. It isn't vndklite though so it's more of a test (to see if you can find device ID code on it).
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
So Device ID App doesn't work for you? Does it not start or just not showing? Did you try several ones by download apk in a browser?

I just did that and it worked like that.
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
So Device ID App doesn't work for you? Does it not start or just not showing? Did you try several ones by download apk in a browser?

I just
[Samsung Galaxy Tab A series Guides, News, & Discus] lewmur:
The ones I tried worked but the ID was blank. And, yes, I tried a few. I think it is because it isn't stored under the same name in 19. It didn't work with the adb commands either. Can you give me a link to the one that worked for you?
[Samsung Galaxy Tab A series Guides, News, & Discus] DJ_BARO:
Device ID - Apps on Google Play

Obtain Device/Android ID ,Google Services Framework ID, IMEI,IMSI,IP,MAC Address

play.google.com

Device ID - Apps on Google Play

Simple app to get your GSF ID (Android ID), Device Codename and Account Emails

play.google.com

Device ID - Apps on Google Play

Get your Device/Android ID, IMEI, IP MAC Address, GSF ID

play.google.com

If none of them working then your Rom is corrupt or maybe it has something to do with microG. Maybe you need true Gapps for that ID.
[Samsung Galaxy Tab A series Guides, News, & Discus] lewmur:
Thanks. Seems my problem was the ID was given in HEX and the registration screen was asking for decimal number. But I put in the hex number anyway and it converted it. Had to clear storage for PlayStore but now it is working. Now I just have to figure out how to arrange the icons on my Home screen.
[Samsung Galaxy Tab A series Guides, News, & Discus] lewmur:
Brightness fix from what "otherone"? I'm using LOS 19 and Nikgapps.
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
@agreenbhm 's LOS 18.1 brightness fix. 😄
[Samsung Galaxy Tab A series Guides, News, & Discus] Taikun22:
"fastboot resize-logical-partition system 3940000000"

I have the 64gb variant, when would I leave it?

"resize2fs /dev/block/bootdevice/by-name/system 961915" I leave this part as is?
[Samsung Galaxy Tab A series Guides, News, & Discus] Mister Monday:
guys its giving me this error please someone help me

________________________________________________________________________________________

C:\Users\user>fastboot flash system C:\Users\user\Downloads\dotOS-R-v5.2-arm64-ab-GAPPS-OFFICIAL.img_2\dotOS-R-v5.2-arm64-ab-GAPPS-OFFICIAL.img

target reported max download size of 268435456 bytes

sending sparse 'system' (262140 KB)...

OKAY [ 6.344s]

writing 'system'...

OKAY [ 2.694s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.368s]

writing 'system'...

OKAY [ 2.728s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.407s]

writing 'system'...

OKAY [ 2.598s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.338s]

writing 'system'...

OKAY [ 2.676s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.339s]

writing 'system'...

OKAY [ 2.646s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.331s]

writing 'system'...

OKAY [ 2.645s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.338s]

writing 'system'...

OKAY [ 2.647s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.337s]

writing 'system'...

OKAY [ 2.689s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.389s]

writing 'system'...

OKAY [ 2.605s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.357s]

writing 'system'...

OKAY [ 2.666s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.361s]

writing 'system'...

OKAY [ 2.673s]

sending sparse 'system' (262140 KB)...

OKAY [ 6.342s]

writing 'system'...

OKAY [ 2.673s]

sending sparse 'system' (244556 KB)...

OKAY [ 5.933s]

writing 'system'...

OKAY [ 2.537s]

sending sparse 'system' (54248 KB)...

OKAY [ 1.336s]

writing 'system'...

FAILED (remote: Operation not permitted)

finished. total time: 118.701s

C:\Users\user>

edit: when i booted it worked nevermind.
[Samsung Galaxy Tab A series Guides, News, & Discus] paziusss:
Super partition might change from firmware to firmware but the size of the flash is not relevant.

Anyways it is safe to execute both commands with higher values.

The first one will return an error until you type a number in bounds.

The second one will return an error and tell you which is the number of blocks available for the partition. Just use that number.

The specific commands at OP were selected as a safe bet, in case newer fw versions required bigger vendor/odm partitions, but you can squeeze a few more bytes by trial an error.
[Samsung Galaxy Tab A series Guides, News, & Discus] Mister Monday:
___________________________________________________________________________________________

C:\Windows\system32>fastboot flash system C:\Users\user\Downloads\lineage-18.1-2

0220120-UNOFFICIAL-treble_arm64_bvS-vndklite.img

target reported max download size of 268435456 bytes

Invalid sparse file format at header magi

___________________________________________________________________________________________

Can someone tell me why this is happening? I can't seem to install lineage 18.1 after installing Dot OS. I followed all the instructions.

Note: I'm new to this GSI stuff so I don't know a lot. Help would be appreciated.:)

Edit: Nevermind i fixed it by updating adb and fastboot.
[Samsung Galaxy Tab A series Guides, News, & Discus] JaneValley:
Hi.. I have failed flash the brightness_fix.zip on phh v402 (non-secure varient)

On the recovery it printed '/system_root/system/bin/phh-on-boot.sh does not exist' and then failed.

Here is my log
[Samsung Galaxy Tab A series Guides, News, & Discus] LegoLivesMatter:
May I ask what toolchain was the GSI kernel compiled with?
[Samsung Galaxy Tab A series Guides, News, & Discus] torekiki:
hi, when I flash system I have:

error: write_sparse_skip_chunk: don't care size 726586984 is not a multiple of the block size 4096
[Samsung Galaxy Tab A series Guides, News, & Discus] smedlytonker:
Didn't work for me either
[Samsung Galaxy Tab A series Guides, News, & Discus] smedlytonker:
Did these steps and brightness does not work for me. Here is the output:

C:\Temp\SM-T500\Lineage\install>adb shell​

127|gta4lwifi:/ # cd /tmp​

gta4lwifi:/tmp # chmod +x /tmp/sm-t500_fixes.sh​

gta4lwifi:/tmp # /tmp/sm-t500_fixes.sh​

Mounting /system_root​

Adding brightness fix​

Done​

Preparing to fix Magisk. Do not do if you have not installed Magisk already. Continue? [y/N]​

y​

Fixing Magisk​

Done​

Unmounting /system_root​

Done​

gta4lwifi:/tmp #​
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
No idea what's up, then.

Edit: VNDKLITE or non-VNDKLITE? Only VNDKLITE works with the fix. Perhaps that's the problem.
[Samsung Galaxy Tab A series Guides, News, & Discus] smedlytonker:
Fix for Lineage

I was finally able to fix the brightness on Lineage by running script once the device is fully booted. The script issues this command which was mentioned earlier in this thread:

'echo 100 > /sys/class/backlight/panel0-backlight/brightness'

What I had to figure out was how to launch it each time on my device boots. I followed these instructions (with some small mods) to get the script to run every time my device boots: https://ch1p.io/lineageos-run-shell-script-at-boot-as-root/

I built a small batch file to install the script and configure it to run on my device. You may want to compare your '50-lineage.sh' to make sure nothing is being removed with my copy.
[Samsung Galaxy Tab A series Guides, News, & Discus] smedlytonker:
Looks like two of my files were rejected - renaming the files so they will not be rejected. Just rename the files with out the .txt extension.
[Samsung Galaxy Tab A series Guides, News, & Discus] smedlytonker:
I used VNDKLITE: lineage-18.1-20211214-UNOFFICIAL-treble_arm64_bvS-vndklite.img

Thanks.
[Samsung Galaxy Tab A series Guides, News, & Discus] Jim in CA:
Can I get a copy of that PM as well? (The one about using Trasker to run the code for the brightness fix with each reboot.)
[Samsung Galaxy Tab A series Guides, News, & Discus] Tirofog:
In Tasker: Profile>Event>Device boot then New task>Add Action>Code>Run Shell. Command is echo 100 > /sys/class/backlight/panel0-backlight/brightness then tick use root.

That should do the trick (y)
[Samsung Galaxy Tab A series Guides, News, & Discus] Jim in CA:
Thanks! I will give that a shot.
[Samsung Galaxy Tab A series Guides, News, & Discus] mrspeccy:
If you prefer a Magisk module that does the same as the above-mentioned Tasker job, Here you go:

https://xdaforums.com/t/sm-t505-samsung-galaxy-tab-a7-lte-gsi-flashing-guide.4423297/post-87039963
[Samsung Galaxy Tab A series Guides, News, & Discus] Jim in CA:
That worked, once I learned enough about Tasker to accomplish it. (y) Thanks again!!
[Samsung Galaxy Tab A series Guides, News, & Discus] Jim in CA:
Thanks for providing an alternative. I got Tasker set up to accomplish the task this morning. I need to learn more about Magisk.
[Samsung Galaxy Tab A series Guides, News, & Discus] mystifuzz:
I can confirm this works nicely!
[Samsung Galaxy Tab A series Guides, News, & Discus] Aramir:
Anyone managed to fix their wifi issue on a SM-T500 (EUX / FR) ? I've tried both the image in the Lineage 19.1 flashed through Odin and Andi Yan's GSI flashed with TWRP + DynaPatch and on both the wifi refused to turn on.
[Samsung Galaxy Tab A series Guides, News, & Discus] ragarcia87:
Any time I have run into this issue, it was due to me having installed T500XXU3BVF1 rom then trying to flash GSI with T500XXU3BUJ1... Once I downgraded to T500XXU3BUJ1 then wifi started working again...

Which ROM do you have installed? Is it the lastest, T500XXU3CVE7, Android 12?
[Samsung Galaxy Tab A series Guides, News, & Discus] Alcante100:
Hi Guy what is the best customs or gsi for samsung tab A7 without no issues please. Seem things are more complicated with the roms scenes.

Thanks in advance.
[Samsung Galaxy Tab A series Guides, News, & Discus] PiKca):
when i try to install any custom rom the screen goes black and then reboots, anyone know how to fix it?

i installed the gsi kernel, also the recovery given on the comments, and i'm trying to install hentaiOS by nippongsi or lineageos 19.1 by andy-yan
[Samsung Galaxy Tab A series Guides, News, & Discus] shorty9210:
what is your stock rom? if you have gone to the latest stock you will have to flash Lineage 20

well let update that, looks like well need a kernel it end rebooting it self on me blah I get back to you on that!

Update11/25/22 so I ended up flashing the lgg_bootloop_fix.zip, before I started reinstalling magisk it was run time was just over 10 hours with the automatic reboot and still hasn't just need to get the GApps and get the TWRP backup restore fix done but as far as I can see the LineageOs 20 should work for the newer android 12 stock roms for the SM-T500 without much else todo!! oh almost forgot if these help you make sure you send some love or get them a coffee to the creators of these two files as well the dev that is building the lineage .imgs for there hard work
[Samsung Galaxy Tab A series Guides, News, & Discus] Hausemaster:
Hey all, I've updated my thread on how to install advertise 13 GSIs from the latest one UI 4.x from samsung, the thread was originally meant for SM-T505, but I'm pretty confident that it'll work for the SM-T500 as most things like recovery are based from T500

https://xdaforums.com/t/sm-t505-samsung-galaxy-tab-a7-lte-gsi-flashing-guide.4423297/

Do give it a try...
[Samsung Galaxy Tab A series Guides, News, & Discus] sircrownguard:
Hey, i did everything in the guide but i cant enable wifi now. What i should do?