yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
​

LineageOS is a free, community built, aftermarket firmware distribution of Android 10 (Q), which is designed to increase performance and reliability over stock Android for your device.

LineageOS is based on the Android Open Source Project with extra contributions from many people within the Android community. It can be used without any need to have any Google application installed. You will need to provide your own Google Applications package (gapps). LineageOS does still include various hardware-specific code, which is also slowly being open-sourced anyway.

Base source code is available in the LineageOS Github repo. And if you would like to contribute to the project, please visit our Gerrit Code Review.

GPL compliance:

​

​

Device tree source code: LineageOS/android_device_samsung_gts4lv

Kernel source code: LineageOS/android_kernel_samsung_sdm670

Working:

Camera

WiFi

Bluetooth

Telephony (Calls and Data)

Audio (Record and Playback)

Video Playback

Sensors

GPS

Encryption (FBE)

Broken:

Nothing (?)

Compatibility:

Compatible with all Samsung Galaxy Tab S5e LTE variants.​

Builds are based off the Samsung's Android 10 firmware with proprietary blobs from T725XXU1CTI1 package.​

Downloads:

Official download links

Notice:

No custom kernels are supported in this thread. Only stock kernel and official builds will be supported. No bug reports if that's not the case.

Installation:

Refer to the official Wiki (link bellow)

Credits & collaborations:

All LineageOS team would like to thank everyone involved in helping with testing, coding, debugging & documenting! Enjoy!​

Device wiki:

Official wiki link
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Quietsch:
when trying to sideload your Lineage in TWRP i got the following error message. This file is for GTS4LV, your device is GTS4LVLTE. What can i do ?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] filjusz:
Try flashing it with ADB sideload on LineageOS recovery instead of TWRP: lineage-17.1-20201107-recovery-gts4lv.img (https://download.lineageos.org/gts4lv)
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Quietsch:
how can i install this recovery.img ? can you give me the sideload command ?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
You clearly didn't follow the wiki, did you? Here is the link again: https://wiki.lineageos.org/devices/gts4lv/
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Quietsch:
in Odin i only can install .tar or .tar.md5. the lineage recovery is img. so my question how to install this lineage recovery. I have read the wiki, but maybe im too old with my 52 years to understand. sorry.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LuK1337:
If you want to keep using TWRP you'll have to switch to that one https://dl.twrp.me/gts4lv.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Quietsch:
thank you soooooo much LUK1337. It works
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] stepstra:
So thrilled to see this finally coming! Thanks!

My first experiences: among all Samsung devices that I ever owned, this one was by far the most complicated to achieve bootloader unlock and install TWRP - but after 1,5h I finally managed it.

Installing lineage-os via TWRP worked as expected, but ... after 1 min. booting with lineage logo the device stops and reboots into recovery. Anyone got an idea why?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LuK1337:
That's what you get for either not formatting the data or installing twrp app ^.^
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] stepstra:
Format data - so easy! :o

Thank you, works like a charme now!
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Geoz:
I got my tablet last month and will like to try the LOS at the weekend.

If I read the Los wiki correctly I can flash/sideload without rooting. If that's correct, can I root after setting up the ROM?

Thanks in advance.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
Yes, you can root afterwards, if you'd like.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] starbright_:
About the installation-howto and just for curiosity:

I know the procedure from other Samsung devices but what is the VBMeta image here? And do I have to use exactly this referenced Odin? Is it patched somehow?

Are all 4 speakers are supported?

Thanks to the devs providing this to us!
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] lapora:
Thank you so much!!! Downloading now!

---------- Post added at 08:13 PM ---------- Previous post was at 08:05 PM ----------

The VBMeta image they link here: https://wiki.lineageos.org/devices/gts4lv/install is for wifi.

Use this: https://dl.twrp.me/gts4lv/
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LuK1337:
They are the same.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] lapora:
I don't know if it's me but I feel Lineage os it's faster than stock samsung.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Pandinus1979:
i installed twrp, formatted the data and deleted the cache and the system under "advanced delete". when restarting, the lineageos symbol comes up, loads for a while and then boots back into the twrp. what am I doing wrong?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LuK1337:
https://xdaforums.com/showpost.php?p=83896137&postcount=10
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Quietsch:
can i format my SD card as internal storage ? I didnt find an option in memory settings.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Finneri:
The OS installed perfectly. After first boot, I wanted to re-lock the bootloader. So I went to download mode and re-locked the boootloader. It gave me an error

partition wbmeta

Reason wbmeta: Error verifying vbmeta image: 0_0_INDIVLDMT_EDRHS_IMTHSGAUEMSAC

Okay. Then I pushed the volume down + power key and it throws me to this same download state every time. I cannot get to anywhere else.

And of course, I did not allow oem unlock and usb debugging after the first boot. I know, stupid me.

But, what to do now? How do I get out from the download mode?

Edit: Found a fix, flashed original firmware eith Odin and started the whole process from the beginning. All is good.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] wipeyourbuttocks:
Follow the wiki. I followed the instructions and everything went smoothly.

The speakers work, but they sounds terrible. Audio FX helps with the sound more than viper4android can.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bniddl:
Stuck on wiki-tutorial

I have two tablets and I got stuck different steps in the installation-tutorial of lineage-wiki.

First tablet: bootloader is unlocked (unfortunately, my mistake), everything works fine until step 13 (Installing a custom recovery using Odin).

Odin log says: successful. Then, when I press the buttons to power off the tablet and release them immediately when the screen turns black, the tablet makes a reboot instead of powering off (and overwrites twrp). I tried to press "Power + volume up" a millisec after releasing "Power + volume down" but then the orignial recovery menu starts. By the way: in download mode, the tablet says: "Volume Down Key + Power Key for ore than 7 secs: Cancel (restart phone)" I tried to reboot the phone into recovery mode with adb, but adb doesn't recognise the tablet when it is in download mode.

Second tablet: bootloader ist locked, OEM is unlocked, USB-debugging is acitvated. I got stuck at step 11 (Installing a custom recovery using Odin).

Odin log says: failed. Tablet says: Blocked by OEM lock. But OEM is unlocked! I don't want to unlock the bootloader again.

I'm grateful for any help.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LuK1337:
Try following https://xdaforums.com/showpost.php?p=81575811&postcount=2 instead, just replace gts4lvwifi with gts4lv in URLs.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Finneri:
Is it just me, or are the speaker quality worse now? The audio fx does nothing. With One UI I felt the speakers were more deep and fuller. Anyway to flash a Dolby Atmos or something in here?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bniddl:
Thanks for your quick reply! Your tutorial helped me to understand that I downloaded the wrong file from twrp, so about tablet 1, it was all my fault!

About tablet 2 (bootloader still locked an I would like to keep it locked): lineage-wiki says "rooting the stock firmware is neither necessary nor required". This means, I don't have to unlock the bootloader, doesn't it? In "developer options", OEM is always unlocked. But in download mode the tablet says: "OEM LOCK : ON (U)", and flashing twrp with odin is blocked by OEM.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LuK1337:
Umm, you know you need to actually unlock the bootloader?

```

- Boot to download mode manually by plugging in USB and holding all the buttons for few seconds

- Follow instructions on the screen

```

You must have skipped that.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bniddl:
Yes, because I thougt with odin and samsung download mode I don't need to unlock the bootloader. So I was wrong, thank you!
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] stepstra:
Is there no vibration mode when holding volume down?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
I didn't notice that stock had haptic feedback. Will add support for the next build.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Quietsch:
is it possible to format sd card as internal storage ? maybe in upcomming version ?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LyMoMo:
No sound! With random lag,freezes and reboots!

Hi,

Installed on a fully updated stock S5e LTE. and having these issues.

I am not sure if the lack of sound is the cause of this and makes the web browser freeze and close.

Any help appreciated.

I format data after LineageOS install and did not install TWRP app.

I tried the complete install process with each (three) versions of this official build and still the same .

Thanks for looking!
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LuK1337:
Newest firmware is not working in current builds yet. You can downgrade to https://github.com/luk1337/gts4lv-fw/releases/tag/T725XXU1CTI1 for time being, just drop all files in Odin and boot back to lineage.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LyMoMo:
Works! Brilliant!

Thanks!
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Benjam_:
Having freezing, sound issues s5e wifi

Hello Hello!

Similar to LyMoMo, but on a new s5e wifi. Installed the latest nightly

I'm experiencing freezes on several pages in settings, plus the volume rocker doesn't work and I'm sometimes unable to get past the device lock screen.

The initial setup app hung at the lineageos-speicific page as well if that's helpful to know.

Thank you for your time!

Very sorry, moving to relevant topic
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
Please don't mix threads. There's a support thread specific for the WiFi variant. This one here is for LTE variant only.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] starbright_:
What about the sound from the speakers? Love the S5e for its speaker. If Atmos isn't working ... that would be acceptable, but sound should be good for watching movies/songs.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LyMoMo:
Sound is working fine! Yes, the speakers are a real stand out on this tablet!

I am not sure how to tell if Atmos is on. I'm just netflix/newpipe/foobar uers^^
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bniddl:
separate encryption password - cryptfs

I'd like to have a strong encryption password and a simpler lockscreen one. I use Magisk.

I tried the solution here: https://github.com/nelenkov/cryptfs-password-manager/issues/25#issuecomment-678674265

But it failed:

gts4lv:/ # vdc cryptfs changepw password 1234 1234abcd

vdc V 11-29 11:44:22 3701 3701 vdc.cpp:52] Waited 0ms for vold

vdc E 11-29 11:44:22 3701 3701 vdc.cpp:62] Failed: Status(-8, EX_SERVICE_SPECIFIC): '-1: '

Does anybody know what this means, or has other solutions? Thanks for any help!
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] 93starletgt:
This ROM rocks! I just don't have a recent apps panel/switcher. Nothing happens when pressing the square on the navbar! Restarted, checked every setting. Any idea how to solve this issue?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] 93starletgt:
Update: I think this isn't a navbar "button" problem. It seems that the capability of displaying the recent apps panel just isn't there. I've downloaded and tried different navbars, and the square button doesn't do anything either. I'm on the last build by the way.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
I have no such problem.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] 93starletgt:
Thanks. Re-flashed through TWRP and that fixed it.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] starbright_:
Someone has an idea how to spoof the ROM to make it ready for microG? Can you @bgcngm create a version that is spoofed? I don't undertstand why LOS is not integrating that. One of the goals of Custom Roms is get back control from Samsung and Google....

I started with LOS18 but I guess it is to early for that. The ROM might work, but with Magisk and microG you run into trouble - at least it should be easier with 17.

It is really bit more complex to flash S5e. What is really worse - if something goes wrong it boots into / stucks where you don't have a chance to switch off the device. So be prepared! My laptop isn't able to work with ODIN if files to flash seems to be bigger, as the stock AP. Blame HP!

One question here: Once bootloader is unlocked and I flashed Stock ROM again.

At which point of Wiki can I start than? Is VBmeta to be flashed again?

I guess it is not possible to lock bootloader again after installation of LOS? The huge warnings while booting are annoying.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] starbright_:
I could manage the spoofing by this little script (attached) out of a Linux shell (adb has to be installed). What is to do:

* Boot into TWRP (Power+Volume+)

* Mount /system

* in a (linux) shell start script (unzip first, make it executable).

I hope I could help someone.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] starbright_:
For my records and maybe it helps others too to complete a mostly spy-free Tablet

Download a few files to PC:

* Magisk 20.4 (latest stable)

* from FDRoid.org Fdroid app and AFwall

I flashed Magisk 20.4 (latest stable) directly after flashing the LOS.

After boot the system I booted back to TWRP and spoofed the ROM as above mentioned.

Booting into system again I installed FDroid and AFwall first. I configure the firewall to just pass FDroid. Most of my used apps are from there - some others I installed via Aurora - which accesses the Playstore with anonymous account.

In FDroid I added a new packet source: mircroG.org/fdroid/repo.

In installed from there the latest microG core, framework, Fakestore and Nlp backends.

Give them rights to pass firewall and do microG selfcheck.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] toystory2000:
Just installed, everything is ok, but wifi can't see any wifi any suggestions , thanks
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
Can you even turn on WiFi? Do you have latest firmware installed?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] toystory2000:
Thanks for the reply

Already on the latest firmware CTK1, have turn on the wifi but can't. see any wifi
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
What model do you have?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] toystory2000:
T725C (TGY hk version ) thanks
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
@toystory2000 what is the output of adb shell getprop ro.boot.em.model on your device?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] toystory2000:
SM-T725C

Thanks
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] GBorges01:
Hello, can anyone help? I installed lineage, but I can't log in to the kindl apk. I can install but at login time the login screen does not appear. On my Mi 8, with lineage and root I can install and log in to kindle.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] starbright_:
Didn't used it for a while, so I installed it now on my LOS S5e. Although I don't give any login data it knows my name and starts synchronizing. That was a bit scary to me! WTF !?!? But it works....

( I am running it with Magisk 20.4 + microG - no gapps are involved).
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] starbright_:
I do have a strange issue. Although I disables "double tap to wake up" (and even reboot device) it happens to me that S5e wakes up while moving and/or touching it. It is not always happen, so til now I didn't found a rule for this behavior.

My impression is that acceleration meter might be involved. Anyone else observed that?

### Edit:

I think I found issue: The "gesture"-feature might be responsible. It seems to be active by default. Not sure what are the criteria, but maybe better to disable that.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] lapora:
Today update broke the device. It stuck on lineageos logo. I am gonna try downgrading to last week update and see if it fix the problem.

Edit: Downgrade didn't work i am gonna have to wipe now hopefully i can boot normally after.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] ryanvi:
anybody know if this will work on sm-t727u?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
Can you both try https://drive.google.com/file/d/1EhKGJfLnKIzPEboEjfxpg6q7VGfRryhF/view?usp=sharing ? If it works, I can backport to 17.1, but I need someone to test this first.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
@toystory2000 and @ryanvi did you manage to try out that build?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] toystory2000:
Thanks , let me try later tomorrow and feedback
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
@toystory2000 and @ryanvi any update?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] ryanvi:
sorry, ended up purchasing the t725!
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Shade_of_RA:
I would be very interested having SM-T727U support added to 17.1. Willing to test and assist with debugging. Also, I'll make a donation if you are still willing to add support.

I've downloaded the file you linked to and installed it. Everything appears to work fine. WiFi 2.4 / 5.0 working. Verizon LTE appears to work (testing limited to talking to Verizon sign up server).

For reference, I did have to take my device thru the SM-T727R4 firmware to achieve OEM Unlock status.

Thanks, RA
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
@Shade_of_RA I have already added support for all LTE models, in both branches, the active one and development. You can enjoy now.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Shade_of_RA:
Many Thanks. Donation sent.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
Thank you so much!
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] megamaced:
As mentioned already here, the speaker sound is awful on LineageOS. Any fix?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
Where was this mentioned? What usecase are you referring to?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Quietsch:
hes correct. Some days ago i compared it with my friends Tab S5e. He has original firmware. Its a big difference. In Lineage it sounds like a 50 dollar smartphone
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
Thanks for answering to my question... not! I still don't know what usecase you're talking about.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] Quietsch:
the soundquality in general. watching tv or movies for example.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] megamaced:
Yeah just watching YouTube for example, the sound difference is massive. Sound lacks depth and is very bright and tinny. I've tried things like VIPER to eq it which helps a bit but still not as good.

Its probably because stock comes with Dolby Atmos for the 4 way speakers built in

I did try to install atmos from another thread on XDA but I could not get the app to open
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] starbright_:
I am running the version from Dec, 26th and I am quite impressed how good it works. Very good job done!

I do have a question/problem with USB. It seems that MTP is somehow not fully functional. Copy more than a file I get an error and connection is lost - device is not seen anymore at (Linux)PC.

USB-OTG (so attaching an USB-Memory-stick) is not working, right?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] starbright_:
It is true - Stock speakers sound like as they would be bigger as they are actually. That is very likely to some proprietary sound processing. But I would say the sound is awful now and no reason to blame the dev - that is out of his scope. Or is it possible to include that as binary blobs?

Nevertheless - if someone found a solution to improve that - welcome!
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] starbright_:
Could install Viper (via Magisk), but honestly - it doesn't seem to work. Anything special to set to get it working? Legacy or compatibility mode?

Mh, even AudioFx doesn't have any effect on the speakers. Can you confirm?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] lapora:
Hey i just wanted to say thank you for this rom! I just finished updating to the march latest update and it works fine. Now i am waiting for Lineage 18 official version to move from 17.1
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] kocj:
I do not have access to a windows machine. How to flash LOS on linux? Will it work with odin form https://odinflashtool.com/
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] dimasik79:
Hello all. i need help by installing this ROM on S5e-LTE.

It is not first custom ROM that i will install on different samsung and other devices.

I try to follow the official installation-guide on LineageOS-website. OEM unlock is done. i will flash "vbmeta" with odin, but it fails by image-verification: "Only official released binares are allowed to be flashed (vbmeta)".

What i do wrong?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LuK1337:
Connect to WiFi and make sure oem unlock is still checked.
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] dimasik79:
OEM is unlocked.

in download-mode i can see this:

Current BINARY: Samsung Official

FRP LOCK: OFF

OEM LOCK: OFF(U)

KG Status: PRENORMAL

....

Qualcomm SECUREBOT: ENABLE

.....

SECURE DOWNLOAD: ENABLE

....
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] LuK1337:
Sure but did you try flashing again now that you connected to wifi on unlocked stock rom?
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] dimasik79:
yes i do. now i am by trying to lock oem, factory reset, and setup-assistand done. WiFi is on and connected, in the developer option the point for "OEM lock" is not more present... i will go to download-mode and unlock again. then retry flashing vbmeta and bootloader
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] dimasik79:
verification error by flashing! :(

and

in developer option it is no point more for "OEM lock/unlock" and in download-mode is OEM LOCK: ON(U1)

:'(
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] dimasik79:
new start: flashing originnal firmware T725XXS2CUA2 from Samsung --> OK

Setup-Device, connect WiFi--> OK

Developer-Options and OEM unlock (after new flashing it was locked) --> OK

Reboot and check OEM unlock again --> OK

Reboot in Download-Mode and check status. Now is OEM LOCK: ON (L) ! And it is no more option to unlock device by long press vol+. hrhrhr

Neu factory reset, new start...

but now it was possible to unlock, flash and boot twrp and now LOS :) .... all good things are 3...
[Samsung Galaxy Tab S5e ROMs, Kernels, Recoveries, ] bgcngm:
Everyone move over to https://xdaforums.com/t/rom-officia...tlies-for-samsung-galaxy-tab-s5e-lte.4190667/.