yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Zippy Dufus:
I just tested file:///sdcard again:

Chromium browser doesn't work.

Brave browser (based on Chromium) does.

I suspect that difference is that my Chromium browser came from a third party repo instead of the official Google Play Store.

I remember seeing Firefox work and I got it from Play Store too.

It looks like some arcane security setting to me.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] laberlaib:
Hi,

I just registered to answer on this and give you my experince.

I had the same problem:

- Developer Options enabled, Bootloader unlocked and "OEM..." greyed out.

- Same message as you had: Binary Version 4 cannot be downgraded to 3

- Then the tablet didnot start up anymore: "there has been a problem with an update. Please use SmartSwitch to repair." But SmartSwitch did not recognize the tablet.

- With this message on the display I started Odin and tried to flash "twrp-3.5.0_9-0-T510XXU3BTK1-20210206.tar.md5" which worked! (Odin => AP-Slot)

- Then I was able to boot into recovery and installed "lineage-17.1-20201121-UNOFFICIAL-T510XXU3BTH4.zip". Some timing with the buttons to boot into recovery was necessary. I downloaded it and copied it on a sdcard to make it available on the tablet and TWRP can access it.

- First it was stuck in a lineage bootloop because I didnot wipe properly. After I went to recovery again (button timing!) and wiped according to the instructions, lineage started fine.

Thanks for the ROM! I got Lineage on all my devices and chose them by the availability of ROMs.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] peanut2020:
I also have the problem that I stuck in Lineage bootloop. Can you please give me a hint what did you do? Can you please explain what in detail "wiped according to the instructions" means?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] laberlaib:
When I booted the device it did not start into LineageOS - the bootanimation never stopped.

if you press power+VolumeDown for 7 seconds the devices turnes off.

Then I booted into revocery. Iirc you do so by pressing Power and volume Up when the screen shows the warning, that the device is unlocked (also according to the instructions).

And in recovery I just followed the instructions from the 1st post:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
The part a lot of people miss is the FORMAT data. A simple wipe doesn't work. You have to actually format the data partition, when coming from stock, to get rid of the encryption.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] FA21:
I just softbricked my device :/

- Just tryed to follow the official instructions. Successfully did the Unlocking. Then I tried to flash AP with Odin, but didn't work "Only official releases..."

- Then I found out skipping the setup process (No logging in to Google, No Pin, no Wifi connection) was a bad idea. I also wondered why the field "OEM Unlocking" in the Dev Options disappeared. So I set a PIN and connected to the internet: OEM Unlocking was now back again, but greyed out.

- So I wanted to retry flash AP with Odin, but didn't get into Download mode, pressing Vol Up&Down while restarting didn't work, Tablet shortly displayed the "Bootloader is unlocked"-Screen, but then started to system. While beeing booted up, using "adb reboot download" brought me into Download Mode. Then I tried to flash AP with Odin again. It failed. Trying to reboot brought me the message "An error has occurred while updating the device software. Use the Emergency recovery function in the Smart Switch PC software". :/

- Smart Switch says, that they can not connect to the device

I'am pretty sad that I messed up. Would be very grateful for any advice to recover and hopefully finally get LOS working. Thank you.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] laberlaib:
I do not really understand what you mean by "tried to flash AP with Odin", especcialy what you tried to flash. I was in the same ( comparable?) situation. I managend to flash TWRP successfully:

https://xdaforums.com/t/rom-sm-t510...-galaxy-tab-a-10-1-2019.4060153/post-84638225
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] FA21:
Thanks dude. This also worked for me.

With "Then I tried to flash AP with Odin" I meant the LineageOS '.tar.md5'-file.

Learnings for me:

- Don't panic, read & search the topic for already occured difficulties

- After Unlocking and First Booting into the old system, make sure that the "OEM"-field in the developer options is existing/visible. Because for me, that was not the case, until I connected to the internet and probably also completed setup by setting a pin (I skipped the rest).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] FA21:
Haha, ty for sharing your experience.

After installing LOS 17.1 on the T510 from this thread, I can confirm, it's only ~ 3sec.

Router (FB 4020) 5m away, one wall in between. No mac filter, 2,4Ghz.

Because I often switch into flightmode, I recognized this is an important factor for me. Waiting 7sec. with my Google P3a is a litte annoying. If somebody has experience with the GP4a with GrapheneOS, let me know^^
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Tidus050:
Hey guys,

can i install this build on the T515?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rw_on_xda:
well, the distance between *AVM* router and an device does mean nothing, even since AVM wants to sell wifi repeater...

just some thoughts regarding connection time:

(if feasable)

- try with wlan mode "b" off, e.g. I guess should read "g+n" or the like

- try with static IP addresses, cause DHCP needs time too

- try channel 13 (usually not that crowed)

- try with WPA (not WPA2 or the mix of it)

- try OpenWRT:

FRITZ!Box 4020 - BoxMatrix

boxmatrix.info

why flightmode ?

is the battery drain too high if you let the WIFI go into "sleep mode".
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] FA21:
Ty for your tips.

I did a quick review:

- First I really measured the connection time of both devices a few times.

SM-T510: 3.25sec

GP3a: 4.45sec

It's not the 7sec as I said, but leastwise for me felt much longer in the comparison

- wlan mode "b" is already off by default, g+n is set.

- each channel has between 18 and 25 operating radio networks, we are on channel 6 with the lowest amount (18; Fritz!box in automatic mode)

- For testing the other points, I currently don't have that much time.

Maybe I can compare with other GP3a users.

I don't want to be available all day and I don't want others to be shown that the text messages have been delivered to me. That puts me under pressure. I can switch off better when the cell phone is practically off. This is how people see that you are really unavailable at the moment.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rw_on_xda:
I've made the experience that switching to the channel the strongest neighbor I see had the less impact.

if you have ever played with AVM-WLan-App you know some of the channels represented as parabola's.

where they cross each other at their sides there is the most signal demolition.

Thinks of (physics):

waves with same frequencies add their amplitude.

waves with 180° shifted frequencies add their amplitudes to ZERO (0, max. demolition)

you can fight breeze (german: Krach) with breeze (with 180° shifted freq.)

AVM automatic mode has proofed to be worse/unrealiable.

AVM WLAN proper configuration seems to be an endless road works (Baustelle) since ages, even when running elder FW.

some guys in an german forum(ip-phone-forum.de) said they are tend to move away from AVM hardware...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] precepv:
Is this 64bit Android OS ?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
No, there's not been a 64-bit OEM release for this tablet yet. We'd need to convert a vendor image from another device with the same SoC like the Galaxy A40.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] PlsDeGoogleMe:
I finally got my Samsung Tablet 10.1 to install this custom lineageOS build! This is my second Lineage OS device. My first one was a pixel 4A phone that works great. With this samsung tablet I got stuck at a few points...first I had to use the Nexus ROM in this forum with ODIN to get TWRP working, when in TWRP I could install the lineageOS ROM..another part I had issues with was I didn't do the the "WIPE" part after flashing. After doing the wipe lineage would boot up. Once Lineage booted up it was constantly crashing saying "messages crashed" then "trebuchet crashed" I then booted back up to the TWRP by holding POWER + Vol up and did a factory refresh.

After getting back into lineage OS I installed some APKs I loaded from a 16GB SDCard. Some APKs like firefox just said "failed to install" and I am finding more and more apps that just wont install. The web browser crashings as soon as I say "download" when I tried to download the f-droid store, hoping that I could use that to install some apks. So far the only Apps I have working are VLC media player (it can stream movies from my server) and the preinstalled browser I can use to surf the web. (might have issues downloading haven't tested much)

Another problem is the USB file transfer doesn't work at all. My windows 10 pc can see the device, but the folders that are on the internal storage are random characters like "ASDFACXVZWSER" and I am unable to move files to it. The tablet also will no longer use my 250GB SD card as it used to, so I have been using a 16GB card to move files from my PC to the Tablet.

If anyone has some suggestions I am willing to give them a try...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
This indicates that you're still using Samsung's file-based encryption. You need to install the Multidisabler in TWRP and then format the data partition.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Off topic, but are you making any progress on TWRP for the T500?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
No, I've still got several updates to complete for SM-T290 and SM-T510 before I get to the SM-T500. There are only so many hours in my weekend, and I have other hobbies.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Sheetespy:
patched it with magisk, now magisk is saying abnormal state, remove the unsuported su. how do i do that?

other than that it worls like a charm, it just never breaks, unlike stock rom, where 2 audio mods would crash into bootloop

even with magisk being dificult it still works just as it should
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] :
When will there be a new security update? Currenly using the latest version but it is still on september 2020
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] kralq:
I'm on T510XXS5BUC4, is it possible to install this ROM or should I wait for matching version of the ROM?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rw_on_xda:
No, cause your binaries are 5 (5BUC4) and downgrade is impossible (AFAIK).

so you need to wait until @Magendanz releases a version based on 5.

OR

you could (temporary) install an GSI (naming ?), . e.g. CAOS 11 (please search the XDA forum)

I got caos-v307-210507-a64-bgZ flashed on 5BUC4

Image Type and Architecture see:

Home

Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.

github.com

TWRP and more:

Create new page · phhusson/treble_experimentations Wiki

Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.

github.com

GSI ROM's:

Generic System Image (GSI) list

Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.

github.com

be aware

currently MTP is broken (workaround: MIX with SMB for file transfer) and WPA3 isn't working (here ?) (workaround: use WPA2 instead)

I don't know if this in all GSI's the case or in CAOS only ...

@Magendanz my intention is not to move user away from your ROM, just help.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
The problem with MTP is that Samsung uses a proprietary implementation in their kernel. That's one of the main reasons that I have to build a custom kernel and why I have to wait until they publish kernel source for every release. (The other main reason is to disable their Knox boot security features.)

BTW, I used the CAOS 11 GSI for my Nexus ROMs, and it's quite good!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Magendanz:
New build just posted...

Downloads:

lineage-17.1-20210526-UNOFFICIAL-T510XXU4BUA1.tar.md5 (Odin tarball)

lineage-17.1-20210526-UNOFFICIAL-T510XXU4BUA1.zip (TWRP update)

Change Log:

20210526:

Based on the latest build of LineageOS 17.1 GSI (20210512) with May 2021 Security Patch.

Updated to the latest Android 10 OEM kernel and vendor partition (T510XXU4BUA1).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] demoneg:
Hi, I just installed the rom " fresh install / wipe everything even system / data and internal storage ", everything works fine, then I installed Gapps and AVG and Avast " both are not running at the same time " and both antivirus gave me malware warning on 6 applications, that included Bluetooth , calendar and other built in and systems application.... anyone else having the same behaviour / issues? or anyone else could test to confirm?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Akki:
Do you have any plans to start development for SM-T500

Actually I'm getting either Tab A 10.1 or A7 which you suggest
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] kill_humans:
Is there any way to flash TWRP and LineageOS without Odin? I have no possibility to install Windows.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
You've told us what you can't do, but not why or what you do have. Do you have a Linux box?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] kill_humans:
Yep, Ubuntu laptop.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] lewmur:
Then there is no reason you can't install Windows. Use the MS "Media creation tool" to download the latest Win 10 iso and then install it in a VirtualBox session. You won't be able to activate it but you won't really need to. You have days to use Odin before you'd need to activate. But that isn't your only option. Linux has a replacement for Odin named Heimdall. A little harder to use than Odin, but an experienced Linux user shouldn't have a problem. VBG
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Zippy Dufus:
See if you can figure out how to do this with Heimdall.

This would require a lot of knowledge and skill, though.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] PMikeP:
Lately the date (time setting) of my Tab A has been jumping ahead about a week. (Manual Time setting.) Even after I set the date and reboot. (Update: It jumps ahead 9 days, if that's a clue.)

Do you think this is a hardware problem or a ROM problem?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] PMikeP:
And ... is there a good reason to flash up to Android 10? Is there anything major that this new ROM fixes?

Else I'll stay with what I have. I don't need to have the "Latest & Greatest" just because.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] MolsonB:
Sadly, I've spent the entire day trying to get this to work. And I'm sure I'm doing it wrong, but this is what I've done to get it "Booting up automatically when connecting charger" with SM-T510, Lineage 17.1 and Magisk.

I've got it to work with other tablets, but this SM-T510 does not have ramdisk, so a little harder to figure out the steps. I have no clue why I have to change sbin/charger, system/bin/charger and system/bin/lpm. I'm sure you guys could do it better in less steps and probably only have to change 1 file, but I couldn't figure it out.

On Pc

-Odin3 lineage17.1

On Tablet

-TWRP - Wipe -> Factory reset

-Setup onscreen device

-Download Magisk

-Reboot

-TWRP - Install -> Magisk-v23.0.zip

-Reboot

-Click on Magisk to install app

-Verify that Magisk is installed

-Reboot

-TWRP - Mount -> System

On PC, open up cmd

-adb shell

-mv /system/bin/lpm /system/bin/lpm_orig

-nano /system/bin/lpm

#!/system/bin/sh

sleep 1

/system/bin/reboot

-chmod 755 /system/bin/lpm

-chown root:shell /system/bin/lpm

-mv /system/bin/charger /system/bin/charger_orig

-nano /system/bin/charger

#!/system/bin/sh

sleep 1

/system/bin/reboot

-chmod 755 /system/bin/charger

-chown root:shell /system/bin/charger

-exit

On tablet

-TWRP - Reboot -> System

On your PC, get recovery.img (I got it from lineage17.1-xxxxx.tar.md5)

-lz4 = decompress recovery.img.lz4 -> recovery.img

-android.image.kitchen = unpacking.bat recovery.img

-copy ramdisk/sbin/charger ramdisk/sbin/charger_orig

-create charger

#!/system/bin/sh

sleep 1

/system/bin/reboot

-android.image.kitchen = repacking.bat

-copy image-new.img to tablet

On Tablet

-Magisk -> install -> (check Recovery mode) -> Patch image-new.img

-TWRP - Install -> image-new.img -> recovery partition

-TWRP - Reboot -> System

Unplug cable and Shutdown

Plug in cable and hope it boots up

*Now when you plug in the charge port, it should turn on automatically.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Int4ng:
Thank you for your great work. Installed it yesterday without any problems.

Seems that double tap 2 wake is not integrated in the rom, right?

In #32 Magendanz recommended to use his Nexus Experience Rom instead of LOS. Is this statement still valid?

Thank you!

*edit* Now i've faced the first issue. Tried to root with Magisk using a patched recovery.img. I've extracted it from the LOS.zip file and patched it with Magisk, then flashed it to recovery using TWRP. I understood (after I've flashed ;) ) that I've actually overwritten TWRP in the recovery with this, correct?

To install TWRP again, I tried to install the .tar file with Odin to AP. From my understanding, this should install TWRP again. Unfortunately I still can't boot to recovery using Power + Volume Up. What have I done wrong?

*edit2* Gave it a second try and now it worked with flashing TWRP again with Odin. But didn't managed to patch TWRP with Magisk App and flash it with TWRP. I've now installed Magisk.zip directly with TWRP and it worked.

I've also found double tap 2 wake in the settings - it's under the special Samsung settings at the top of the menu.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] whoiswes:
OK, I've read both the Nexus and Lineage threads and couldn't find an answer, so apologies for what may seem like a dumb question.

I have 2 T510's, both flashed to the November 2020 build of Lineage. I wanted to update them both to the May 2021 build, which is running on the newer kernel. Initially, I tried just flashing the updated Lineage zip, but of course that failed due to the kernel mismatch. So I tried updating to the T510XXU4BUA1 via Odin, but ended up in a wierd state and had to completely wipe everything.

I think when I updated these to the November build this past winter, I ran into similar issues and had to wipe one of the tablets (IIRC the other did get updated without issue).

So my question - is there a pathway to upgrade Lineage when the kernel changes WITHOUT a wipe? I would have assumed it would be simply flash the updated stock ROM via Odin (AP only) then flash the Lineage MD5 file via the same. That didn't seem to work for me thought.

Subsequent non-kernel-update releases would just be flashed via TWRP like any other ROM.

Thanks @Magendanz for an awesome ROM!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] mcsoap:
Just wanted to share my $0.02 with installation procedures. I now understand why people are running into the VaultKeeper issue - everyone is trying to update the ROM outright, which boots up and triggers it. Here's what I did:

I opted to ignore the entire branch of steps where "TWRP is included in the ROM". I don't care. I will install TWRP first and when I'm done I will install ROM second." Doing it like this won't get you into limbo state with VaultKeeper, because if VaultKeeper gives you trouble while installing TWRP, you can still boot into your stock ROM. Once you succeed with TWRP you install multidisabler from there and it will completely mitigate the risk for you.

- Unlock bootloader. Follow the procedure carefully. When bootloader is unlocked, device will factory wipe. Back up your data first.

- When bootloader is unlocked and device is factory reset, let it boot up, connect to wifi and go to settings. Enable USB debugging again. The option "Unlock bootloader" will already be grayed out and will have the enabled state.

- Reboot into download mode, this time Odin will succeed in uploading the TWRP into AP and will not give the error that "only verified bootloader can be installed"

- After that I successfully booted into bootloader (TWRP), installed the multidisabler and proceeded to wipe.

- After that I booted into download mode again and went into Odin to install the ROM. This failed with no concrete error in Odin, but a red text appeared on tablet saying "System Rev. Check Fail. Device:5, Binary:4 (PRODUCT).

I noticed there were warnings about some versions of the tablet not being supported, but didn't bother to check since I've had this tablet for like 2 years. Now I'm in a state where I guess the only way forward will be to use Odin to install original ROM again.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rw_on_xda:
-deleted , cause @mcsoap's device is "great again" :cool: -
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] X_E_N:
Anyone know why Play Store cries about lack of storage? Cannot install/update ANYTHING. Fresh install.

I've cleared caches, rebooted etc. Nothing. Any clues?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] mcsoap:
Yeah, I installed the CAOS on my T510. If I understand it correctly, the AOSP GSI is pure Android, whereas Lineage OS is basically degoogled version of Android and user has a choice of various levels of Google intrusion (gapps). Since they are two branches, each has it's own flavor of bugs and incompatibilities.

I'll see if I can live with the baked-in amount of Google malware in the AOSP GSI distro (so far only device sign-in during setup and continuous prompts about Google wanting to 'member my passwords for everything).

Thanks for the support anyway, this tablet is like 100x faster now. The official Samsung ROM was really tragic in terms of performance.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] rw_on_xda:
that bugs me too, but I needed playstore to get "Mi Fit" running [1]

anyway apart from playstore you could disable all google apps and /or restrict data collection.

I'm thinking about to try GSI Lineage OS from andyyan (?)...

[1]

not installable on stock (device somehow incompatible ?!) nor the with racoon manual downloaded MiFit
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] TheGriffMaster3:
When will this be updated to LineageOS 18.1?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Hey doggie:
Haven't had this tablet very long and just started using it. Already tired of the junk I don't want on it. I see that it is running Android 11 build T510XXU5CUF4. I suppose your current build will not work. ???
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] jangrahul:
Was able to install this using ODIN.

The wifi connectivity doesn't work, whenever I connect to a network, it shows "limited nertwork connection" warning, has anyone faced this issue ?