[Project Treble][SM-T820][SM-T825] based on Android 9.0 20190408 - Samsung Galaxy Tab S3 ROMs, Kernels, Recoveries, &

I'm not responsible for any damage to your device of any sort.
By flashing this you take responsibility of anything that happens.
Process at your own risk!
If you want to check firmware - please make backup.
Notes
The idea of this project treble is to separate the device-dependent part and the system.
The project treble requires a separate /vendor partition for device-dependent part. But unfortunately we do not have it. But we have a /cache partition, which takes about 200mb and there is a /hidden partition, which takes 50-60mb. 200mb is not enough for us, our vendor is about 450mb.
In the first edition I maded for the 825 tablet, I implement an original solution using separate files for the system and the vendor. But this solution was very difficult to understand. Now my good friend @bonuzzz suggested an idea to me using a compressed partition (squashfs with lz4 compression). With this method, our vendor takes 190-195mb and it is possible to write it to the /cache partition. And use the /hidden partition as a /cache.
Now the installation has become much easier, almost like installing the usual lineage.
Installation
1. install twrp version with treble support (this is my special twrp, based on 9.0 with my latest caf kernel with squashfs support)
2. download treble zip and flash it as usual zip. It will flash boot.img and /vendor partition (in /cache)
3. download any treble system (64bit System A-only) image from: https://forum.xda-developers.com/project-treble
extract, you should get .img file, then copy to sdcard/extsd card and then flash image as system_image in twrp (Install - switch to Install Image and flash as System Image)
4. if you wanna back to stock firmware or lineage - you need flash normal twrp version and make full wipe or just flash stock firmware via odin
Links
Firmware
[SM-T820]
1. 20190404: https://drive.google.com/file/d/1hOPdO9UajY7AlJ5lE859Tr6Y7sEpwhTf/view?usp=sharing
[SM-T825]
1. 20190408: https://drive.google.com/file/d/1DokV37D8f2s9OtoAJTCURfdx88tNW788/view?usp=sharing
TWRP
[SM-T820]
1. 20190404: https://drive.google.com/file/d/1gJ50Sg75Vh7PKyiWfejiCPSD0SYCL5p2/view?usp=sharing
[SM-T825]
1. 20190408: https://drive.google.com/file/d/1x_MKQ1PDM6eEbSPsDyFk0DABjXnZfyB4/view?usp=sharing
System images
You can use almost any system image from https://forum.xda-developers.com/project-treble
Our version is: arm64 and a-only image
Magisk
You should use only latest 19.0 beta version from: https://forum.xda-developers.com/apps/magisk/official-magisk-v7-universal-systemless-t3473445
Do not use 18.1 or early version - it's dnw, it will corrupt firmware or may be even corrupt recovery (need flash recovery again via odin)
Almost all firmware say about wrong vendor version. This is normal, just press OK.
let's experiment together!

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Version for SM-T825 hope will come soon too. I have some ril issues.

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Update boot.img
Wow! Thank you for the amazing work. I seriously can't believe no one hasn't gone crazy over this already.
How would I go about adding some libraries to my /vendor partiton now? I want to try a Samsung OneUI GSI image on my tablet but it requires additional libraries.
The files I want to add are in here: https://mega.nz/#!oi52TSTY!2Qy3WU7DjVmafs4zENPF6dlOsbY06JG5NuvsNeDTRn4
How did you build this file in the first place?
EDIT: I noticed that video playback does not work. I see the video starts to buffer, then some ghosting appears, and finally the app crashes (both YouTube and Vimeo). Also, camera apps seem to crash.

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cephasara said:
EDIT: I noticed that video playback does not work. I see the video starts to buffer, then some ghosting appears, and finally the app crashes (both YouTube and Vimeo). Also, camera apps seem to crash.
Click to expand...
Click to collapse
With me, YouTube and YouTube Vanced I run without problems and also the camera app works (only the switching times to the front cam take some time).

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GSIs
rainman74 said:
With me, YouTube and YouTube Vanced I run without problems and also the camera app works (only the switching times to the front cam take some time).
Click to expand...
Click to collapse
Maybe my /hidden & /cache partitions got corrupt somehow. I tried several GSIs and had the same issue. Thanks for confirming though.
Have you tried an GSIs from non AOSP-based images? Like OneUI or Xperia? I had trouble with those.

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rainman74 said:
With me, YouTube and YouTube Vanced I run without problems and also the camera app works (only the switching times to the front cam take some time).
Click to expand...
Click to collapse
Could you let us know which treble rom you used, as I have the same issues with video playback on youtube.

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I also want to throw out there I was on the Nougat bootloader when I tried this and had video playback issues. I have not tried it out on Oreo. I would imagine that could make a big difference.

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deleted (it sucks none of the sensors function properly)

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just installed RR but i think gps not working
https://forum.xda-developers.com/pr...0-resurrection-remix-v7-0-arm64-32-b-t3891636

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This is great!
Hey everyone, this project is big news! I am so happy that we can use Treble GSI, using the cache partition via squashfs is a really elegant way for this.
Almost everything works on my T820! I am using Phh-Treble AOSP 9.0 v112, MindTheGapps and Magisk. Even adoptable storage works, I have 256GB for internal storage now (it displays as 256/512 used when empty, but whatever).
The device is certified with magisk and custom prop value.
Contrary to the old Lineage OS from last year, there is no crazy wifi jitter, so Steam Link just works fine. I did not try out the recent Lineage 20190331, so I don't know if it was due to Lineage.
The rotation sensors are not working, for now I am using "Rotation Quick Setting" app from Play Store. Also, the camera app crashes, but I am not using it anyway.
Thank you so much @bonuzzz and @Valera1978 for making this possible! It is stable enough for daily use for me.
BTW, I came from Oreo bootloader, and have no problems regarding video playback (but I use MX Player, not stock)

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Mhh.. I get constantly soft reboots if i try to install third party apps or restore my titanium backup on Havoc for treble. Fingerprint is also not working. Seems to be very unstable...

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How could I go about adding files to this treblized /vendor partition? Presumably through the zip? If this is the case, how could I do that?

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Fair warning to those wanting to try this: treble roms do install and run, but sensor support appears to be lacking. I can't get any input from gps, accelerometer, gyro, or light sensor.
@Valera1978 If anybody has any idea on how to add support for these to the (I'm assuming) vendor partition, I'd love any hint or direction.

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usb otg not working

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alegru said:
Hey everyone, this project is big news! I am so happy that we can use Treble GSI, using the cache partition via squashfs is a really elegant way for this.
Almost everything works on my T820! I am using Phh-Treble AOSP 9.0 v112, MindTheGapps and Magisk. Even adoptable storage works, I have 256GB for internal storage now (it displays as 256/512 used when empty, but whatever).
The device is certified with magisk and custom prop value.
Contrary to the old Lineage OS from last year, there is no crazy wifi jitter, so Steam Link just works fine. I did not try out the recent Lineage 20190331, so I don't know if it was due to Lineage.
The rotation sensors are not working, for now I am using "Rotation Quick Setting" app from Play Store. Also, the camera app crashes, but I am not using it anyway.
Thank you so much @bonuzzz and @Valera1978 for making this possible! It is stable enough for daily use for me.
BTW, I came from Oreo bootloader, and have no problems regarding video playback (but I use MX Player, not stock)
Click to expand...
Click to collapse
Does Netflix work?

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I get a bootloop after installing image and reboot to system. I have followed the instructions and got an error "Updater process ended with ERROR:7" installing the treble-16.0.zip. I flashed the custom TWRP using odin and using stock Pie. Did I do something wrong?

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Hey all. Flashed all the relevant files in the relevant order and currently have a tablet sitting on the Tab S3 splash screen. How long does this normally take?
I flashed the custom TWRP,
Rebooted into Recovery,
Flashed the Treble .zip file,
Rebooted into Recovery,
Flashed the latest Havoc OS, then Magisk v20.3
then rebooted and it's stuck here.
Strange thing is, Windows has flashed up saying that it is "setting up Samsung_Android" while it's on the splash screen.
I come from the tweaked T825 ROM.
Anyone else had this issue? Should I have flashed stock first?

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ianrobbie said:
Hey all. Flashed all the relevant files in the relevant order and currently have a tablet sitting on the Tab S3 splash screen. How long does this normally take?
I flashed the custom TWRP,
Rebooted into Recovery,
Flashed the Treble .zip file,
Rebooted into Recovery,
Flashed the latest Havoc OS, then Magisk v20.3
then rebooted and it's stuck here.
Strange thing is, Windows has flashed up saying that it is "setting up Samsung_Android" while it's on the splash screen.
I come from the tweaked T825 ROM.
Anyone else had this issue? Should I have flashed stock first?
Click to expand...
Click to collapse
Well I've hard-bricked my tab by flashing the Treble zip so consider yourself lucky. I think you should flash ODIN stock and start from scratch. Flash ashyx's TWRP, follow the instructions there. DO NOT FLASH MAGISK. Then flash Treble TWRP, flash zip, reboot recovery, DO A WIPE DATA / FACTORY RESET, NOT FORMAT, Then flash Havoc OS a only or whatever. After that wipe cache/dalvik and let it boot to ROM, AND THEN flash magisk and stuff.
I hard bricked my tab because Magisk was installed on the device while I flashed Treble. So yeah DON'T DO THAT EITHER
By the way im so sorry for being 2 months late i saw this just now

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Looking dangerous. I'd like to try it but uncertain procedures

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NullCode said:
Well I've hard-bricked my tab by flashing the Treble zip so consider yourself lucky. I think you should flash ODIN stock and start from scratch. Flash ashyx's TWRP, follow the instructions there. DO NOT FLASH MAGISK. Then flash Treble TWRP, flash zip, reboot recovery, DO A WIPE DATA / FACTORY RESET, NOT FORMAT, Then flash Havoc OS a only or whatever. After that wipe cache/dalvik and let it boot to ROM, AND THEN flash magisk and stuff.
I hard bricked my tab because Magisk was installed on the device while I flashed Treble. So yeah DON'T DO THAT EITHER
By the way im so sorry for being 2 months late i saw this just now
Click to expand...
Click to collapse
would some of the issues seen by others be fixed if one started with non-rooted stock 9.0 and 9.0 bootloader (if it is different from that for Oreo)? thanks anyone