yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
Darn, I was just going to bed when your message popped up. So as I mentioned, I build 18.1 SM-T350, SM-T550, SM-T560NU and SM-P550. I have been using 18.1 on SM-T350, SM-T560NU and SM-P550 since around late March 2021 before I posted my builds here. I can assure you I have that I have charged all 3 at least once since late March.

So I took at look at all 3 devices and you are correct in that there is no indication in the battery settings that it is charging on AC. So I took a look at the log and I found

$ adb pull /sys/fs/selinux/policy && adb logcat -b all -d | audit2allow -p policy

#============= hal_health_default ==============
allow hal_health_default sysfs_charger:dir search;

What the above means is that I need to write a sepolicy to allow the OS to look at the battery charger directory probably for it's status. Because it can't currently look, it can't show the correct status.

While writing and researching this in the last 10 minutes or so my P550 has gained from 69 to 71% on AC charger even though the battery settings doesn't show it.

So I will write the above sepolicy sometime tomorrow and may have to write more after some testing. If it works, then I will put that into the August security patch build. In addition, I will write it as part of the FAQ/notes so people aren't surprised until.

Thanks for finding this bug.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
So if you plug in your T550, look at the battery percentage. Leave it alone charging and then come back 30 minutes later and it should have gained something. That indicates it's working.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
Okay, I wrote the sepolicies and they work on my P550 so they should work on the T550. The fix will be incorporated into the August security patches.

The fix is documented at

sepolicy: Allow hal_health_default sysfs_charger to read battery stat… · retiredtab/msm8916_sepolicy_vendor@c1eca9f

…us so OS can properly display AC charger status Adding these 2 policies so OS can display AC charger status properly when AC adapter is plugged in.

github.com
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] leo5111:
trying to install lineage to sm-t550, i run autoroot then install twrp, then go into twrp and get error 7 or error 1?​
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20210808-UNOFFICIAL-gt510wifi.zip

Aug 8 release notes

1. Fix battery status icon. When you plug in AC adapter, settings, battery does not show it charging even though it is. This is due to the sepolicy being too restrictive. I added https://github.com/retiredtab/msm89...mmit/c1eca9f7740b6a384d4fab8a1e8d812f59c17a99

2. Aug 5 security patches as per https://review.lineageos.org/c/LineageOS/android/+/314477

3. Whatever LiineageOS changed since last July release (about 11,500 files had to be recompiled).

4. 18.1 continues to be my daily driver since March 2021.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bierma32:
It has nothing to do with ROM , it has to do with the quality of the network were you connected.

This week if got the same problem, last week it was always OK., different access point / hotel.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20230212-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

Feb 12, 2023 release notes

1. Feb 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2023-02

2. Whatever LiineageOS changed since last Jan release (about 12,500 files had to be recompiled).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uschipower:
I use a external SD Card in my SM-T550. I just noticed that it seems that since android 11, there is a write protection on sd-cards.

especially on external_sd/Android/ folder it seems that there is write protection.

the standard-devicemanager in the rom in this thread is "Files".

I cannot access the sc-card at all.

with total commander, I can access the sc-card.

But when I try to access external_sd/Android/, Total Commander says that there would be a special dialog in next step.

"Files" is opening, but the app is empty, no such dialog.

How can I grant write access to external_sd/Android/, to every other folder on sdcard?

How can I disable that write protection?

The problem was discovered after i installed Titanium Backup and I tried to select a folder for backup on sdcard.

Thanks.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] joke19:
There must be an option under developer options
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uschipower:
I found the option, but after enabling, nothing changed.

Any other suggestion what i can try?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] joke19:
I use mixplorer from xda
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uschipower:
I have tested it and I could access external_sd/Android/ directly without any Message. So it's an alternative for Total Commander.

Regarding Titanium, it still uses the app "Files" for Selecting folder
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
I have no problems with 18.1 Feb 2023 build using the built in "Files" app to read, copy and write to my external sd card.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20230321-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

March 21, 2023 release notes

1. Mar 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2023-03

2. Whatever LiineageOS changed since last Feb release (about 22,500 files had to be recompiled).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20230415-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

Apr 15, 2023 release notes

1. Apr 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2023-04

2. Whatever LiineageOS changed since last Mar release (about 28,000 files had to be recompiled).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sintoo:
I just bought an old T550 android 5.02. Could anyone give me some reference points on how to backup the original samsung rom before I flash twrp and this custom rom please. Thank you so much.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uschipower:
Because it's a new device for you without any data you have to look for, the easies way is

- enable developer options

- unlock bootloader

- install TWRP-Recovery

- use TWRP to backup all partitions to external sdcard

that's it.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bierma32:
Is it a new device , than it is easier in case some thing goes wrong to flash the original Stockrom with Odin.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] joke19:
You can download the rom from here https://www.sammobile.com/samsung/galaxy-tab-a/firmware/SM-T550/FNC/ and Odin to recovery the stock rom
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sintoo:
Successfully install this ROM without Unlock Bootloader, using the older TWRP. I wonder if anyone had install the newest Twrp (3.7.0) for this tablet? How to expand the partition size to fit the new TWRP?

-Also the tablet doesn't see my router band 5.2Ghz in WPA3. It sees only my router band 2.4GHz WPA2
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bierma32:
The newest TWRP isn't possible to install , it gives an error.

See Q& A. Post #2

Q5. What TWRP should I use?

A5. You MUST use TWRP 3.5.2_9-0.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20230508-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

May 8, 2023 release notes

1. May 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2023-05

2. Whatever LiineageOS changed since last Apr release (about 7,400 files had to be recompiled).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uschipower:
Are there any changes to data-Partition since last Apr release?

I started updating from an working device with lineage-18.1-20230415-UNOFFICIAL-gt510wifi.zip

I first tried an update like every month in the past:

Boot to TWRP, make a backup of all partitions, then installed your may-build with TWRP, clean cache, boot into system

This month, the device always stopps booting at animated startup-lineage-logo

My second try:

Boot in TWRP, formated (not wiped only) system and data, installed your may-build, restored data from TWRP-Backup, same result, device stopps booting at animated startup-lineage-logo

At the moment, I restored boot, system and data, system is working properly with april-build.

Does anybody have an idea what stops booting?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bierma32:
Can you create a log from TWRP before you Boot into system
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
There have been no device tree changes to the T550 since Aug 5, 2022.

I dirty flashed and there's no problems. I ALWAYS test EVERY build to make sure it boots and functions as per post #1.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Averageandroidlover:
Why is the oem unlock button not showing up on my tablet?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] joke19:
Under developer settings no unlock option?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Averageandroidlover:
Yes
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20230610-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

June 10, 2023 release notes

1. June 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2023-06

2. Whatever LiineageOS changed since last May release (about 5,600 files had to be recompiled).

3. Next 18.1 security build will be August 2023.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uschipower:
Are there any chances to get an arm64-v8a app running on the device with this ROM?

I should install a banking app for TAN generation. But the app is only available for arm64-OS.

Thanks.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
I have no plans to make, if even possible, an arm64 variation for SM-T550.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uschipower:
would you be so kindly and check if arm64-OS is really the reason why it is not possible to install the app:

Meine smartID – Apps bei Google Play

Erhöhen Sie die Sicherheit Ihres Online Banking Logins und zeichnen Sie Aufträge

play.google.com

perhaps I have miss something

Thanks.

By the way, regarding to this subject, because I want to unterstand it, why did you took 32bit sourcecode of LOS when you had started making custom roms?

Are there any dependencies to partitions which are not affected by installing your custom roms, f.ex. recovery, EFS, Modem, Firmware?

Did you have to use things from stock ROM from Samsung when creating your CustomROMs?

I read something a long time ago that Samsung was someone who used 32bit in its ROMs while other manufacturers uses 64bit, although the CPU was 64bit.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
As I stated in FAQ #3, if your app doesn't work, then go back to stock or whatever worked for you. If it works in stock, then it's not going to be arm64 related as stock is arm32.

Samsung released their stock as arm32 so the kernel, proprietary drivers are all arm32. If you want to try and change it to arm64, all the open source code is in FAQ #1.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] belog2867:
I'm f̄l̄ās̄h̄īn̄ḡ System, twrp reported error err code 1.

I accidentally removed the device when using odin. Is it related to this?

I still get this error when I use the provided lineagerec. I used your version 18.1 and version 19.1 twrp version 3.5.2_0.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] belog2867:
I understand why I encountered the error now. The CSC code on my device is CHN. When I checked on SamFW, I couldn't find any firmware updates specifically for Chinese devices running Android 7.1. Your ROM package requires version 7.1, and I attempted to change it to match my device, but it failed. Please fix this issue. Thank you. Also, I need your 18.1 version.

My english is not good.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
I'm not the maintainer of SM-T550 TWRP and won't be building any SM-T550 TWRP. I suggest you try older version of TWRP starting with 3.2.3 at

https://dl.twrp.me/gt510wifi/

if your bootloader is stuck at Android 6. If TWRP 3.2.3 doesn't work, then try every other version there is.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Branqueira:
Hello,

i install lineage-18.1-20230610-UNOFFICIAL-gt510wifi.zip but it's crash with mindThe Gappes or openGapps pico or full.

my installation procedure :

1- wipe all partitions with twrp

2- install lineage with twrp

3-boot device

4-reboot at end of init config

5-install gapps (mind or open) with twrp

6-boot device

7- use device a few minutes

8- BOOM - power off automatically

this version it's work only alone ?

i try with aurora store ;)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uschipower:
I noticed the same today with videochat, after I have updated to June-Version this weekend.

Have look at your CPU-Temperature.

Arrount 90°C, the device switches of as you described. Can you check if your device also power off after reaching this temperatur?

Perhaps in june-release, CPU-protection-temperature was reduced.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Branqueira:
I didn't pay attention if it was 90 degrees but it was hot.

I format everything and reinstall only lineage and aurora store only and for now everything works.

At the beginning of this post, the author said that there is too much problem with mindgapps and opengapps, he recommends aurora store, I listened to him.

Too bad it's practical all the bull**** Google apps
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] belog2867:
I need your help, the system partition needs to be expanded, that's why I can't flash Samsung's official android7 through odin。
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] belog2867:
The running version in China seems to be different from your version. Mine has a capacity of 32g, but the system partition is extremely small, only 2gb
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
Sorry, I cannot help you with a device I don't have.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] belog2867:
I just need to judge the CSC code of the machine and adjust the size of the system partition according to the code, which is similar to your p550
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] belog2867:
A good news is that I successfully swiped into your ROM. I extracted csc file from odin brushing package, extracted pit file and repartitioned my device.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
I have released LineageOS 20 ALPHA at

https://xdaforums.com/t/unofficial-...or-galaxy-tab-a-sm-t550-july-14-2023.4606129/

I will likely discontinue building 19.1 at the end of 2023 because 19.1 and 20 are very similar and I don't want to be building and maintaining 18.1, 19.1 and 20 as it's too much work.

To clarify,

1. I will build 20 every month for 2023

2. I will build 19.1 on odd numbered months for 2023

3. I will build 18.1 on even numbered months for 2023

I haven't made a decision on 18.1 for 2024.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] haajee86:
I understand your decision. Because it's all a lot of work. I tried also 19.1 a year ago i think. But it was a more slow than 18.1. So that''s the reason i choose for 18.1. But maybe is 20 just faster? I could give it a try! :)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20230814-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

Aug 14, 2023 release notes

1. July 5 + Aug 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2023-07 and https://review.lineageos.org/q/topic:R_asb_2023-08

2. Whatever LiineageOS changed since last June release (about 8,000 files had to be recompiled).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20231008-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

Oct 8, 2023 release notes

1. Sept 5 + Oct 6 security patches as per https://review.lineageos.org/q/topic:R_asb_2023-09 and https://review.lineageos.org/q/topic:R_asb_2023-10

2. Whatever LiineageOS changed since last Aug release (about 6,700 files had to be recompiled).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] y0himba:
Using Odin it's looking for an .md5 file, but the download is a .zip. DO I need to place it on my SD card and then boot to recovery to use the .zip?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bierma32:
@y0himba

You need Odin only to flash the TWRP recovery.

If you want to flash the Rom than you have to install at first TWRP an than you can flash from the TWRP the ROM as Zip file.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] pippolicata92:
Thanks
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uschipower:
does ROMs from retiredtab include any things to bypass google's safetynet?

I am asking because of this

--> Ideally, this workaround should be incorporated in custom ROMs instead of injecting code with a Magisk module. See the ProtonAOSP website for more information.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
As I clearly stated in FAQ 12, I no longer use any gapps since Nov 2021.

As such, I will NOT include any code that offers to bypass safetynet or play integrity or whatever it's called in the future. I will NOT build, add, test, maintain, support or answer questions regarding this topic.

If people want this, they can build their own private rom and add such code or workarounds as my code is completely open source as per FAQ 1.

In addition, I remind people who think this is unreasonable, that as per FAQ 25, I don't even own a T550. I own the P550 where the code is 99.99% identical except the x-axis is reversed. I provide a tested as to "what works" T550 build as a courtesy to the community. It takes significant time to build, test, maintain T550 builds considering there are 18.1, 19.1 and 20 builds provided by me.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] uschipower:
ok, I understand. You never look for any google-attestion in your roms, right?

Using Aurora is a good way to get apps from Google's playstore without any kind of google-services.

How do you handle it if an app only works when it can make a SafetyNet-/PlayIntegrity-Check? Especially banking-app demand such checks.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bilatche:
here, I installed play store on my SM-t550 on LOS18.1 in order to use Netflix and games which need google.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20231212-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

Dec 12, 2023 release notes

1. Nov 5 + Dec 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2023-11 and https://review.lineageos.org/q/topic:R_asb_2023-12

2. Whatever LiineageOS changed since last Oct release (about 35,700 files had to be recompiled).

3. Since Android 14 has been released, it's highly like that security patches for Android 11 from AOSP will be discontinued in the first half of 2024 based on past history.

As such, I will make the next 18.1 build in March 2024. If and ONLY if someone backports the current 2024 and beyond security patches to Android 11 and make them available at review.lineageos.org, then I will make another build Sept 2024.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ronnz98:
In terms of Q1:

In addition, there is a repo diff file for device specific tweaks needed to work and a roomservice.xml (local manifest file) file so you can build this rom yourself.

Where can this be found?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
It's in the zip file named 181-gt510wifi-july-10.zip in post #2. xda for some reason won't let me upload straight .txt files, so it's zipped.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ronnz98:
Thank you. Was hard to spot (for me ;) )

How do I apply the patches? Via patch -p1 filename ?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ronnz98:
Is the zip file mandatory to apply?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
Yes, you need to apply those patches.

As I wrote, 2.5 years ago, I didn't have the best way to organise the various repos and was still learning. Even though I built 17.1, there were huge problems getting 18.1 to work.

Starting with 19.1, I spent a LOT of time and effort into splitting the common code into it's own separate device trees because the code wasn't common to all devices. However, I didn't want to go back and put in the same amount of effort into 18.1 so I left it.

That effort in 19.1 paid off as making 20.0 was much easier.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ronnz98:
Thank you so much for your work!

I think I try a 19.1 or 20.0 build. Are they stable?