yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
What seems to trigger the automatic reboot to recovery is writing the param.bin partition (with the boot logo), which I don't do on the LineageOS releases. So, if you haven't formatted the data partition, you've got to catch it during the reboot after the Odin flash with Power + Vol Up to enter TWRP and format the data partition.

If you don't do this, LineageOS will bootloop when it sees the file-based encryption. No worries, though, since you can still just reboot with Power + Down and then Power + Vol Up to enter TWRP and format.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
The MTP fix is relatively straight forward, but it is a code change in the kernel. It just seems that @ibanezbass hasn't included the fix because it would break OEM system partitions. Unfortunately, you've got to build two custom ROMS, one for OEM system partitions and another (with the MTP fix) for AOSP-based and LOS-based ROMs.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] PMikeP:
Okay, thanks. So apparently it wasn't something that I did. Thankfully I knew about using TWRP from my old days.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] riverstyxxx:
Question: If I update my OEM to the latest, will it replace my custom recovery?

And one more: How do I update the kernal without installing the oem?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Updating to the latest OEM will not only replace the recovery partition, it will also re-encrypt the data partition. If you are using a custom ROM, you will need to wait for updates for it. Check for the latest version of the ROM in the first post of its thread.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] riverstyxxx:
Hm, I flashed the custom kernel for BTFN and then tried the same version of lineage. It installed but, its not loading past the initial screen.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] riverstyxxx:
I found this: Download the latest version 10 from Samfirm for your device and flash via Odin. Then flash the latest nexus rom via Odin over it. If you dont want to lose your previous files then flash using the HOME_CSC file.

Will that work for this? Im coming from the old v9 lineage to v10.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] riverstyxxx:
Here's a different way to ask: Is there way to go to BTFN (or higher) without losing my custom recovery?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
No. In fact, depending upon how old your current ROM is, your recovery version might not even work with the latest version. But I really don't understand your problem. Installing the latest LOS ROM will give you the correct TWRP anyway.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] riverstyxxx:
Alright. At least tell me the bootloader will still be unlocked?

Problem is Im still on the old v9 android system from july. Need to install the oem before upgrading further.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Andy1767:
Yeah I've got the same problem. I also do use the tablet offline often and after each reboot I have to set date again. It runs a week behind always. That was from the trick to unlock the official firmware. I guess the ROM lacks a writeback to the internal clock. I've heard of this poblem with other devices with custom ROM where the problem was fixed with a fix in the custom ROM. I think it could be fixable but I lack the knowlege how to.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] riverstyxxx:
It wasn't as difficult this time. I tripped the vaultkeeper so had to reinstall, went online and then enabled developer options. Twrp is installed, now onto more things. Thanks @Magendanz
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] kheno:
first of all a big thanks for this rom.

sdcard notes:

Stock kernel does not seem to support exfat.

inifity kernel does but fails to support usb file transfer.

So you need to format the SD Card to FAT32

Do not use windows: Windows does not want to format sdcards bigger than 32GB into fat32.

Twrp format did not work for me eather.

I just formatted the sdcard to fat32 with a free partition manager. Think I used minitool free partition.

After you insert the card, android will only ask once what you want to do with it, select portable storage, and it will become available.

Root issue:

One thing that I can't seem to get my head around: getting the magisk safetynet to succeed.

BasicIntegrity and cts fail. I know how to change props to succeed with cts, but I suppose I first need to get basicIntegrity to succeed.

Normally renaming the magisk manager, enabling hide and clear play store and play services storage should do it.

But I can't seem to get it succeed.

Tried the latest magisk canary branch and beta. Tried different ways of installing magisk.

Tried a reflash of the stock rom and then lineageOS through odin, data format, magisk install and then opengapps pico.

No luck.

(I use the latest image: stock: T510XXU3BTH4

lineage-17.1-20201121-UNOFFICIAL-T510XXU3BTH4)

@holy.triforce you seem to have it working, since you can use netflix.

Are you using T510XXU3BTH4?

Any special things I should know?

I used rootbeer as test, hid it from magisk and got the following

Couldn't get much more out of it. Tried paths noted here:

RootBeer - Speaker Deck

Tried 'which su' but could not find anything which could point me into the right direction.

Tried googling...

I'm a little lost, maybe someone could confirm it working and what they did to get it working?

Thanks!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rw_on_xda:
maybe this could help (I got no sd card > 32 GB, so not tested)

SD Memory Card Formatter for Windows/Mac | SD Association

www.sdcard.org
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Yes, the bootloader will remain unlocked but you have to go through the whole process of flasing the latest stock, then the custom ROM, boot to TWRP, FORMAT, not wipe, the data partition and then flash the custom ROM again. Of course this means all of your apps will need to be reinstalled and any data such a pics, videos, music etc will be lost. So make sure you back up everything first.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zzjea:
I have been using the Nexus ROM on the T-510 for a long time. I want to try this new Lineage 17 ROM. What steps do I need to take to get there (TWRP or Odin) and I assume I need a factory reset but do I need to format data? I have current Nexus TWRP backups that I can go back to. Thanks.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] kheno:
you can choose, if you have twrp already installed, use the twrp install.

install notes say it is required to erase data, though since coming from nexus rom, data partition will not be encrypted, so it might work without format. Not sure if the rom has specific things set on the data partition.

give it a try i should say.

Make sure you have your twrp backups on external sdcard, so you don't loose them.

Exxternal sdcard should be formatted in FAT32 or it will not be readable.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] kheno:
Thanks, but that one also did format in exfat :)

The solution I gave with the free partition tool soled it.

I placed it inhere as a note/help for others.

My big issue I have is basicintegrity failing.

And I am not sure what options to ignore or where to look.

So if someone set Magisk hide, please let me know, so I can narrow down the possible solutions or have hints where to look.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] sam240os:
Any alternative to audiofx application? without root
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ShaunKOTL:
EDIT: Ignore this post, I managed to trick the device into rebooting into just charge mode and then from there was able to get into TWRP. I was then able to delete data and it's all good!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zzjea:
I am coming from the Nexus LOS ROM of 11/14 as my daily driver. After installing this ROM (If I don't wipe data) I get "Google Play Services Has Stopped Working" and it won't go away. If I wipe data before installing, Gapps are not included with the ROM. Where do I get the correct Gapps as the ones I have tried to install have error codes.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Have you tried open_gapps-arm-10.0-nano?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zzjea:
Yes. I get "Insufficient storage space available in System Partition..." Error: 70 During the install.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
From TWRP select /Wipe/Advanced and select the System partition. Then click "Repair or Change File System" then "Resize File System". If it doesn't work the first time, do it again.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
I don't have this tablet, but the SM-T350 lacks a real time clock. I implemented timekeep to fix the above.

Details at

https://xdaforums.com/t/unofficial-...ab-a-8-0-sm-t350.4162573/page-2#post-83906999
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] apx@dwx:
if coming from stock this occours cause of old encrypted leftovers from stock rom. just wipe the data partition properly with twrp and reboot
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zzjea:
This is a screenshot of the ROM that I am using and is dated 11/14. This works great and has since it was released. I can't get the latest version 11/21 to install properly, see above posts. This version also uses the Google Logo on startup, not Lineage. What am I missing here? Is this the LQ Nexus ROM? I can't get that new version to install either.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
Sounds like you're trying to install one of the Nexus ROM releases. We should probably diagnose on that thread, but the problem is typically that your installing an Android 10 ROM over an Android 9 base. Because I use custom kernels, you should only install them over the stock OEM base of the same build (e.g. T510XXU3BTH4).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] zzjea:
I have been on your Nexus 10 for about as long as you have made it available. I have been updating as you have made new releases available. I did try to install the LOS 17 from this thread recently but it did not have any GApps included and I have not been able to find any GApps 10 to install successfully. As a result I have gone back to this Nandroid (TWRP) backup which has saved me on several attempts. Why would I have a Google logo instead of your Nexus logo anyway? Why is no one else having issues with GApps on this LOS 17? Was there something else I needed to do besides doing a factory wipe before installing via TWRP?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] andronikal659:
Edit: knights fights 2: honor and glory crash too. Does anyone have games crashing too? Could it be phhh I force fps 60, open gapps pico,fluid navigation, other apps or settings causing the crash?

Hi, amazing rom.

Smooth and fast except for games like asphalt 9 and sea invaders for my kids that continuously crashes.

Other than that, sound is loud. I appreciate that.

Sd card is finicky but works most times.

Pico open gapps seems to be causing some crash with play services and Gmail.

No charging battery icon.

Double tap to wake sometimes doesn't work

Google screen cast is amazing unless you have samsung tv and needs to use smart view

Not sure if caffeine or live display does anything (auto brightness?)

Really love this rom for the minor hiccup. I just need to find other games that the kids can use or gapps for Gmail since the built in email couldn't connect to the Gmail server.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] andronikal659:
What file system is recommended for this ROM, extfat?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] tobykenobi:
Well I know I'm green, but I just can't get my tab A to start up after the new install. I could get 16 to go, but the browser would stop upon firing it up. For this one (17.1) I'm stuck in the boot loop. I've cleared the cache, formatted data and flashed the multi disabler and still no love.

Any ideas? Start from scratch yet again? (done this a few times already)

I've installed this using odin and installed various other things (i.e. gapps - yeuuch!) with twrp so that all seems to be fine. If it weren't for that boot loop I might be gold.

Any help appreciated.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retarded1:
everything installed very easily, thanks
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bedwere:
Do you guys have access to file:///sdcard/ using Chrome? I installed the version of this ROM for T515 and I don't. I was wondering whether this is a general problem. Thanks!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Zippy Dufus:
This has been bedevilling me too but with Chromium.

It is not just this device either.

I've spent considerable time trying to figure it out without luck.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] tobykenobi:
Hmm. Seems Lineage is not in my future. (SM-T510)

I could get 16 to install and boot up, but it WILL NOT access the innertubes. It starts to open a white page but immediately shuts down. This happens for any app that attempts to access the web. Sideloaded an alternate browser... exact same.

Installed 17 but it's stuck in a boot loop. The multidisabler doesn't help.

Installed the stock Android and it's also stuck in a boot loop.

So the only thing I can do is install Lineage 16 which immediately stops & closes any app which tries to access the web.

oddness.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] cmo_sec:
Months ago I flashed version 20200321 via Odin and everything was working fine. I wanted to update to the newest version 20201121 now, flashed the ZIP via TWRP but ended in a boot loop.

I reflashed 20200321 via TWRP and luckily everything was working again. Then I tried to flash version 20200413 over 20200321 and it worked. Afterwards 20200713 over 20200413 which also worked. But after I flashed version 20200812, my T510 also got stuck in a boot loop just like with version 20201121.

What's the reason for this behavior? How to fix the boot loop in the newest version 20201121?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Zippy Dufus:
The first flash resized/reformatted the partition or something.

Look back in this thread and see were I pointed out the same behaviour.

The OP Magendanz replied with an explanation.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
There was a change in the partitions that mandates you flash the latest stock ROM before you can flash the latest LOS ROM. After flashing the stock ROM, you need to follow ALL of steps you would in a first time custom install. Including formatting, not just wiping, the data partition. You won't need to do this everytime, but you need to do it once to get past the Aug 2020 update.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] cmo_sec:
Ah I see, didn't know that. Thank you both for your answers!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] MattSpec:
I've turned down the screen brightness to 0 while trying to watch a movie in a dark room. Now the screen backlight is completely off. I cant see to unlock the device again. Any way to fix this without reflashing the os? Also how can I prevent this in future? (Its certainly going to happen again sometime)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] TheDevil259:
It's just an LCD screen.

Thus you can just shine a bright light (like a flashlight) at the screen and you'll be able to see the UI.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] MattSpec:
I've tried this, the screen is pretty reflective so ive not been successful so far. Was wondering if someone had a different solution.

EDIT: After tapping around i got lucky and got the backlight back on. Any way to change minimum brightness?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] danielmm1997:
It does not work with the latest Firmware

Samfw.com_SM-T510_DBT_T510XXU4BUA1

or?

It is possible to Downgrade the Bootloader from 4 to 3?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Muxd:
I have a problem with the SD, I can't use it:

When I define the SD as internal storage, I can view it in Settings/Storage, but not in Files app (nor in Amaze or DiskUsage).

When I try to use it as external storage, a notification say there is a problem with the SD, and the only thing I can do is define again SD as an external storage, but it comes in loop. In Settings/Storage, the SD appears as corrupt.

Is it a known issue? How can I use the SD?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
If it is formatted as exFat , then the answer is yes, it is a known issue. The kernel doesn't support exFat. You can install the Infinity kernel to get exFat support but it won't connect to a PC via USB, except from TWRP. There is a way to format SD larger than 32gb as FAT32 but the file size is still limited to 4gb.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Muxd:
Yes, it was in exFat.

In TWRP I've tried to format the SD in FAT or ext4, but I had errors and the capacity was very low.

Now I've formatted in FAT32 from a computer and it seem to be OK. Thank you!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] thebobbydigital:
I managed to get this ROM installed on my Tab A after lots of mistakes during the bootup :)

Odin gave me a success/pass message, and i followed the instructions to shutdown the tablet, disconnect from host PC and power up.

When I booted up, I got a warning from the Samsung tablet about the custom OS and I had to tap power to continue (which I did). However, then I seem stuck on this black loading screen with an teal inverted smile.

Here's what I see:

I've tried leaving it doing its thing as I thought i was some first run issue, but after 15 mins I power cycled it but get to same place. I'm not sure if this is the same as the "boot loop" issue others are mentioning. I assume not, since it's not rebooting over and over again, it's just stuck.

Questions:

I've tried reflashing with Odin and same result. What have I possibly done wrong and how to do fix this? Am i hosed at this point or is this just caught up somewhere obvious that I'm missing?

I've installed another ROM (The Nexus version based on LIneageOS) and now getinto same situation boot, except now it's a loading screen with the google symbol. Is this an issue with LineageOS on my tablet?

I don’t see a way to restore stock ROM. In TWRP when I go to “Restore” there’s nothing listed to choose from.

My next step is to try installing the Nexus ROM for the Tab A but based on AOSP instead of LineageOS. In meantime if you have suggestions please let me know!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Zippy Dufus:
Have a look at this reply from the OP to a post that I did previously in this thread: https://xdaforums.com/t/rom-sm-t510...-galaxy-tab-a-10-1-2019.4060153/post-84004959

My post/question is just before it. A simple reboot after the hang upon the initial flash may solve your problem.

Very nice and detailed question/post by the way. I'm amazed at your effort and detail!

Have a look at this reply to a post that I did previously in this thread: https://xdaforums.com/t/...-galaxy-tab-a-10-1-2019.4060153/post-84004959

My post/question is just before it. A simple reboot after the hang upon the initial flash may solve your problem.

Very nice and detailed question/post by the way. I'm amazed at your effort and detail!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] thebobbydigital:
Okay, i got this to work finally. What I got tripped up on was the following:

Based on other comments, I had to upgrade first to Android 10 as there is some partition changes that happen that you can't just install LineageOS ROM for 17.1 on Android 9. I did that after finding a Android 10 ROM for XAR (my region is USA) online.

After that, I then installed the this ROM using Odin. But what got me tripped up what in the instructions in the first post it says "If TWRP launches, factory reset with Wipe->Format Data and reboot to system. (Not necessary for incremental upgrades.)". This is super confusing. It should instead say "Reboot in TWRP (using power + vol up), and then go to Wipe, then swipe on the bottom to do a factory reset". The existing instructions are confusing because (a) it won't boot into TWRP automatically and (b) "format data" is an option on the screen.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
But "format data" MUST be done when coming from a stock ROM . After your upgrade to Android 10, stock, your data partition was encrypted and you have to format the data partition to get rid of the encryption. Just wiping doesn't do it. THEN you need to flash the custom ROM AGAIN, in order to get back an unencrypted data partition.

That is why you'll find both an Odin version AND a TWRP version of the custom ROM. Flash the first time with Odin, format the data partition and flash again with the TWRP version.

edit: what you probably did was to go back a flash the custom ROM a second time with Odin, which will also work. Most people just find it easier flash the second time with TWRP. But if you had never formatted the data partition, it wouldn't have worked.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rw_on_xda:
well, maybe a temp. gap between used to do something daily and describing that for newcomer (?!)

anyway, on the first page is a link named "Unlock bootloader" , that opened => e.g. section "Buttons" and more

the maintainer works on diff. ROM, his last nexus auto. boots into recovery, this here did not - IIRC (checked in Sept. 2020) -

he also did a writeup of boot modes here:

https://xdaforums.com/t/sm-t510-t515-2019-galaxy-tab-a-10-1-hard-resets.3927366/
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] FA21:
If you turn on Wifi at the OEM Rom, it connects very fast within 2-3 seconds. I have another device (GP3a) running LOS, there it takes like 6 seconds to connect, which is very annoying. Can somebody tell about connecting time for the T510 with this LOS rom please?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] ste0s:
Hello!

I tried to flash this on my tablet using Odin but it fails with SW Rev check error, as my bootloader apparently is binary version 4, but this is built for binary version 3. From the information I could find it seems it's not possible to downgrade. Is there any way to get linageos installed on my device? Is it possible to do a custom build for binary version 4? Or am I out of options?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rw_on_xda:
with an "pre-connected" device *I* need ~3 sec to connect the T510 with LOS 17.1 to my router (FB 7590)

pre-connected :=

the T510 was once successful connected to the router and is currently not connected.

so the time measured is the amount after tapping Wi-Fi on and until I see T510 is connected.

router has fixed channel 64 (5 GHz), MAC filter set, 2 m away.

wifi is depending on a lot factors

btw. :

what are 3 sec ?

just count: 21, 22, 23 ?

a fly-s**t in our space-time continuum... :cowboy:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rw_on_xda:
don't know if it help's, but yesterday I downgrade-flashed stock with Odin 13.3.3 from 3BTK1 to 3BTH4, both 3 though.

IFAIK, you need to let the device connect to the internet with stock to be able to have another shot with custom rom's.

see:

Installation

The Magic Mask for Android

topjohnwu.github.io

=> section "Unlocking Bootloader" => keyword "VaultKeeper"
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bedwere:
I guess it was a problem with Chrome. Today I've opened file:///sdcard and it seems to work fine. I have a dump of a web site and I can now navigate it offline.