yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sitikkamake:
During install, I had trouble accessing recovery mode after flashing with Odin.

To access recovery on this tablet, USB has to be connected unlike stated in the instructions.

A big thank you for developing and maintaining the ROM!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Hausemaster:
Hi, could you please try implementing USB PD support?

(Basically it's where you can charge the device and use OTG simultaneously)

Edit: It'd be really helpful as this allows us to use this tab almost like a laptop
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
If I'm not mistaken, I think "smart charging" makes that impossible. The data lines can either be used for controlling the charging or as USB data transmission. But not for both.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Hausemaster:
Sad, do you have any alternatives?

It's up to the developer at the end of the day, but adding an option to toggle smart charging in the battery options and implementing PD would work I suppose...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
I don't think smart charging can be turned off. Even devs can't do it.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Hausemaster:
Oh, well. Do you have any suggestions/alternatives for conserving charging during the usage of OTG?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
I don't think you'll like my solution. I have multiple tablets. Battery runs down on one, plug in another one.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sitikkamake:
Media volume from speakers is a bit loud.

Is it possible to increase the amount of volume steps or lower the gain / amplification?

I tried adding ro.config.media_vol_steps=30 to build prop file but was unsuccessful. I'm not rooted.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] benphillipstn:
So magisk zip can be flashed from recovery? I installed Lineage using Lineage Recovery. Is it possible to flash a zip with lineage recovery, or do I need to TWRP?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Hausemaster:
Yes, magisk can be flashed from lineage recovery
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] mmilinovsky:
Hi,

I own a Samsung Galaxy Tab A7 LTE (SM-T505) with stock ROM (Android 11) and would like to install LineageOS. The Wiki for this device (https://wiki.lineageos.org/devices/gta4l/install/) says, that the device must be Android 12 to install LineageOS 20: "Warning: Before following these instructions please ensure that the device is currently using Android 12 firmware." But I did not get an update for it, although there should an upgrade to Android 12 be available from Samsung.

Any ideas how to proceede to get the device to LineageOS 20?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Zeesk95:
I have dowloand file from lineage os site. How to install Super_empty.img
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
You could flash the firmware only. See https://wiki.lineageos.org/devices/gta4l/fw_update/

Chris
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
Why do you have to do that? Just follow installation instructions.

Chris
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] mmilinovsky:
Hmmm, which one to take?

Samsung Galaxy Tab A7 LTE 64 GB (2020) SM-T505

Model: AN-6009-8526

Seriennr.: R9TR30KMAKJ

Android 11

Baseband: T505XXU3BVA7

Buildnr.: RP1A.200720.012.T505XXU3BVA7

Software: T505XXU3BVA7 / T505OXM3BVA7 / T505XXU3BVA7
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
If you have SM-T505, flash this one: https://github.com/chrmhoffmann/gta4l-fw/releases/tag/T505XXS6CWI2
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] mmilinovsky:
OK, thanx for your help, I will give it a try!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] mmilinovsky:
Thank you very much, @chrmhoffmann for pointing me in the right direction! I finally have LineageOS 20 with MicroG on my tablet.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
Try the new SM-T500 (gta4lwifi) wifi-only android 14/lineage 21 build:

MediaFire

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

www.mediafire.com
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
and for SM-T505 - gta4l:

MediaFire

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

www.mediafire.com
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rickroll'd:
A little question before I proceed with the installation, does this ROM support installing apps to SD card? Because for my use case there's no way the apps would fit in the tiny 32GB of storage. I can't use the stock Samsung Android 12 fw because Samung has made it super laggy and I can't downgrade as some of the apps I use rrequire Android 12! I really like this tablet because of its gorgeous display. No tablet in this segment has such a beautiful display.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
No, it does not. No current ROMs allow using the SD card for apps because it is a BADDD idea. External memory is many times slower than internal and running apps on it will, at best, cause the tablet to be laggy. And running some apps from there will even cause crashes. If you need more than 32gb then this is the wrong tablet for you.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rickroll'd:
Well, thank you. Unfortunately, I am not in a situation to upgrade to a new tablet. Most apps I use are not so bandwidth heavy but storage heavy, been using a 256GB card to store stuff. Was looking for lineage OS because Samsung ruined it with Android 12.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Well, if you install the latest LOS 21 ROM, move all your data to the SD card, root, and then disable or uninstall all of the apps you don't use, you should be able to fit what is really needed into 32gb. That's assuming you don't install any internal eating games or try streaming in 4k. And you can find refurbed Tab A8s with 64gb or more for not much more than you could sell the A7. It is only "buying new" that is really cost prohibitive IMO.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rickroll'd:
Buying refurbished? Try that in India and you shall regret it.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rickroll'd:
Well, I can't buy new. Gotta make use with what I have, I do use a Sandisk Extreme Pro 256GB card so it is decently fast. I play RR3 and the loading times are decent even though I have forced installed it to a SD card.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
The SD card speed is limited by the bus speed. Having extra fast cards doesn't help.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
Official lineage 21 builds on the way....
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] TheBigZ:
Hi,

How did you get microg installed? Appreciate some direction. I got my t505 flashed with the rom and recommended GAPPs. Then installed magisk.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rickroll'd:
Ran a CPDT disk speed test and the SD card was only 1.5 mb/s slower in sequential read and beating out the internal memory in random reads. It was 1 mb/s faster in write both sequential and random.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
BS. There is no way that memory accessed via a bus can match RAM mounted directly on top of the SoC.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] mmilinovsky:
After successfully installing LineageOS with GApps I took the LineageOS with microG ROM from here (gta4l) and installed it using this instructions. Be careful to take the correct ROM for your device (gta4l, gta4xl, gta4lwifi)!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] TheBigZ:
Thanks. Appreciated.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
Official builds are out, please test :)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] natedogwoof:
i agree im still a teenager and SD card support for apps is a must for me i like to install tons of apps on my devices and i tried using SD card mover apps and that didn't work to no avail, i would rather take the slow speeds and lag over having basically 0 storage.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] natedogwoof:
OK guys anyone who wants there SD as adoptable/internal i found a solution enable USB debugging in developer mode like allays, plug in your tablet into your PC and install ADB idk if XDA allows links. i got mine off Linux mint app store idk where to get on windows but a quick google search should work. run command ADB shell, next run sm list-disks, then run sm set-force-adoptable true insert disk name. then go back to your tablet press format SD card and now you will have the another way and format your SD card as internal/adoptable like useial. i will tell how it preforms.

works just fine tested with slitherio will report if i encounter any issues
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] hollol:
Is it possible to dirty flash LOS21 over LOS20 (w/o full wipe/format) or is this not recommended? I am asking because I just finished the setup with LOS20 shortly before (the microG version btw) and already handed the device to my son. So I need kind of short upgrade time ;-)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Thankfully I'm not in India. I currently own seven Samsung devices and have lost count of the number I've owned over the years. I have never bought one new and have never had a problem with the used or refurbed ones I've bought.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
No. You need to format data because recovery can't handle encryption. But there shouldn't be any need to rush to upgrade to LOS 21. There aren't any "must have" improvements over LOS 20. Personally, I don't really find it that difficult to go through the setup procedure. I've done it so many times I could almost do it while asleep. LOL
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
Wipe should not be needed. In case you have gapps (I suppose you don't), don't forget to flash the new gapps version, too.

Chris
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
Not true. Recovery doesn't need to handle decryption. The upgrade from lineage 20 to 21 should work without wipe

Chris
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
It has to write to that encrypted disk. How does it do that without "handling" it? Go ahead and try it. If it works it works. If I'm wrong, it won't be the first time. Nor the last. :-)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
It does not write to the data partition.

Chris
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Lord Raiden:
Hi. I installed latest ROM (lineage-21.0-20240220-nightly-gta4lwifi-signed.zip) on my SM-T500 exactly like in the Lineage's wiki. It boots but screen turns on and off repatedly. After 30 seconds, it reboots.

So I tried an old version (lineage-21.0-20240215-nightly-gta4lwifi-signed.zip) and it boots normally.

Just wanted to report.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
Thanks for reporting. I just tried that build and can't reproduce the problem.

Do you mind upgrading to latest build with the system updater now and send me logcat output if it happens again?

I would imagine that you could downgrade later again.

Rgds,

Chris
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
OK - the problem is identified - it's an issue with Always-On-Display. Not related to our device: All recent lineage builds have been removed.

Hopefully be fixed next round of builds.

Chris

Fix is: https://review.lineageos.org/c/LineageOS/android_frameworks_base/+/383756
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Lord Raiden:
Oh great! Many thanks.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sodnwsdho:
I recently purchased this device and am ready to flash this ROM, thank you very much to the developers😘😁
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] UnderscoreKer:
Updated from lineage 20 to 21 via dirty flash, works perfectly! Thank you.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] natedogwoof:
Help me I have twrp after I updated the linage os my gapps stopped working
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
What version of LOS did you flash? To have gapps it should be the bgN version not the bvN.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sodnwsdho:
成功😁
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] SanHelios:
Hey, i'm not exactly sure, if this is the right place for my question.

I'm trying to build Pixel Experience, using LOS21-Repos, but modified for the PE-Build-environment, can anyone tell me how to solve this one?

I'm not exactly sure, if source build/envsetup.sh and lunch integrated the repos correctly because "lunch" doesn't show samsung/vendor.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] hollol:
Looking at the latest LineageOS change logs I stumbled across this (more or less for all phone models and for LOS18 to LOS21):

Allow signature spoofing for microG Companion/Services

https://review.lineageos.org/c/LineageOS/android_frameworks_base/+/383573

Do I actually see this right, that LOS is now officially supporting MicroG and I don't have to use the "LineageOS for MicroG" fork anymore in the future?

EDIT: Just saw, that it is actually not the case for the SM-T500! So question is, could this be merged for our device too?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
Not device specific - This should be in this or in next build.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sodnwsdho:
hello，I don't know if this is a bug, but on the lock screen page, this icon(🔒) is unusually small
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
"That isn't a bug. That's a feature."
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sodnwsdho:
I mean, it's too small
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
I know what you meant. You obviously don't know the reason for the quotation marks.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sodnwsdho:
ohhh…i know😂
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] help12211:
Help
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rickroll'd:
It might be the way for developed countries, India being a middle of the pack country means all the devices in the refurbished market are shoddily repaired, they will look good to anyone who is non-savvy but have underlying issues. It is useful for foreigners who are temporarily staying as they can get a phone which will work with indian sim cards and can be used for wifi hotspot.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] niotronic:
Hello,

I would like to know if it is possible to install LineageOS on a Samsung Galaxy A7 SM-T509 tablet and if so, how ? I tried to flash the vbmeta.tar using the odin 3.14.4 but unforutnately it fails with the following messages:

<ID:0/017> Added!!

<ID:0/017> Odin engine v(ID:3.1401)..

<ID:0/017> File analysis..

<ID:0/017> Total Binary size: 0 M

<ID:0/017> SetupConnection..

<ID:0/017> Initialzation..

<ID:0/017> Get PIT for mapping..

<ID:0/017> Firmware update start..

<ID:0/017> NAND Write Start!!

<ID:0/017> SingleDownload.

<ID:0/017> vbmeta.img

<ID:0/017> FAIL! (Auth)

<ID:0/017>

<ID:0/017> Complete(Write) operation failed.

<OSM> All threads completed. (succeed 0 / failed 1)

Any ideas ?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
What did you do PRIOR to attempt to flash vbmeta?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chrmhoffmann:
SM-T509 is NOT supported, it has different SoC from unisoc and not Qualcomm.

Chris
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rickroll'd:
So been using adoptable storage and it worked great, I had like 20 apps and games installed filling up 50GB of the SD card and today I decided to give it an update but now suddenly all apps on the SD card don't have internet access. Uninstalling and reinstalling is the only solution. Any fixes?

Tab A7 (T505)

Sandisk 256GB SD card running 25% mixed

LineageOS 21
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] menarini:
Hello, I succeeded.

However, "Double tap to wake" does not work in AOD

AOD could not be retrieved from setting.

Please help me

I Think I solved it------------

Lockscreen optsion->turn off the allways time display.

now you can use double tap to wake.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Today's ROMs make no provision for "adoptable storage" because it is a BAD idea. SD cards are magnitudes slower than internal storage and, at best, will cause laggy performance. At worst, it can even cause crashes. The Tab A7 is a budget device and was never meant for "gaming". Mine has over 20 apps installed and has no problems. It is the GAMES that eat up internal memory.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rickroll'd:
The 3.5mm audio jack doesn't work, it behaves like it doesn't exist but connecting a type c to 3.5mm adapter works. Any fix? Latest build as of 23rd March 2024
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] wombatch:
Does that mean it can't be supported by Lineageos or just that there needs to be a whole separate build process? In my ignorance I bought a SM-T509 not realising there were these differences. :(
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] LAWLMAX:
Thank you for the great work Chris!

I have been testing mar19 build (gta4lwifi) with Gapps for a week and its very stable for now. Only issue I ran in is when clicking the "safety and emergency" tab in settings, the settings app crashes. I've seen it mentioned on the S5e thread but maybe I missed it here. Anyway, there seems to be a workaround for anyone having the same issue (I did not try it) link.

Overall its amazing thank you.

Max
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] house994:
I have battery drain issue on LOS 21, factory reset couldn fix the problem.I have installed Gapps, any ideas how can i fix it?10 minutes of youtube is like -9 percent of battery
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rickroll'd:
Considering the Tab A7s are approaching 4 years old now it might be the actual battery itself and not the ROM. I have had no problems of battery drain using LOS 21 but my battery was replaced 4 months ago.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] cappuccini:
Is the CPU governor still set to 'performance' by default? If so, you need to root your tablet and change it to 'schedutil' or 'conservative'.

P.S. I have installed NikGapps core. The package is very small and works fine for me.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] house994:
Everything was fine 3 days ago on oneui
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] house994:
Idk about cpu governor.Can you give me some instructions?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] cappuccini:
With 'CPU Info' you can check very well whether the frequencies of the individual cores calm down after a short time as with 'conservative' or 'schedutil' or remain constantly at full power as with 'performace'.

With 'SmartPack-Kernel Manager' (root required) you can change the default settings. Open the app --> Kernel --> CPU --> CPU Governor under BIG and LITTLE to suit your needs.

I downloaded CPU Info and SmartPack Kernel Manager from F-Droid.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] medosaid1:
Is there any TWRP for T505N ?

If yes someone give me a link please
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] house994:
thank you for response.After factory reset i got 8-9 hours of screen time
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
I've got the one for the T500. Don't know if it will work on the T505. If you want to try it, let me know and I'll upload it.

Edit: If you want to try it, first extract the recovery.img from your current AP file and tar it. That way, if TWRP fails, all you have to do is flash the recovery.tar file from the AP slot and it won't effect your current setup.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
twrp_tab_A7_LTE

MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.

www.mediafire.com
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] medosaid1:
Thank you
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] medosaid1:
I will try but not right now
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
The one I linked is not the one I first posted about. The link is for a T505 tablet.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ithilion:
@chrmhoffmann

Hi,

PC runs Debian derivate

Tablet is SM-T500

DLed heimdall from https://androidfilehost.com/?w=files&flid=338156

DLed vbmeta.img, recovery.img, lineage-21.0-<latest>.zip from https://download.lineageos.org/devices/gta4lwifi/builds

First I updated stock OTA to T500XXS7CXB1.

Then, following the wiki's "Pre-Install Instructions", I

- OEM-unlocked

- in download mode unlocked the bootloader

- booted into sys, Wi-Fi, check OEM unlocked

- in download mode '$ sudo ./heimdall flash --VBMETA ./vbmeta.img'

- let device do the wiping

- booted into sys, started Setup, but after chosing lang and country, restart is the only option and this leads to a locked device.

In the fg, red on black, it says "Only official released binaries are allowed to be flashed (vbmeta)".

In the bg, white on turquoise, it says "Security Error\nThis phone has been flashed with unauthorized software & is locked. ..."

Looking at that or booting into download mode are the only options left, it seems. Booting into recovery or into system doesn't work, attempts only lead to said error screen.

I can then flash the original vbmeta.img, after which I can setup stock again. But, doing the same steps above again leads to the same outcome.

The wiki doesn't mention the mid-setup restart. Is that sth new in the current stock system? Is this the problem - restarting before setting up Wi-Fi and reenabling Dev-Options and checking OEM lock state?

If so, how might one get around that?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] SmartJuwel:
Can you give a link to the t-500 twrp?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
SM-T500_TWRP_3.6.1-Beta5.tar | by agreenbhm for Galaxy Tab A7 10.4 (2020)

Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.

androidfilehost.com
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] SmartJuwel:
Thx, this one works not on LOS21, right?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
No, it works just fine with LOS21.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] cappuccini:
What are the advantages of twrp over LOS Recovery?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
That is subjective. For me, its familiarity. I've been using TWRP for years.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] cappuccini:
ROM is encrypted, I rather see disadvantages for outdated TWRP...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Sorry. I won't get into that argument. To each his own. As I said, it is subjective. I've tried the LOS and don't like it. Just my preference.

edit: For the record, I don't like encryption either.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] cappuccini:
I felt the same way, I was also a friend of TWRP. I haven't had any problems with LOS Reovery for some time now ;-)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] SmartJuwel:
ROM is very smooth, stable and battery life is very well. Everything I use seems to work. Thank you Dev 🙂

Now I saw, that in Google Play Store the device is not certified. Any known reason for this? 🙄