yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
To expand on FAQ 21, the msm8916 repos are mainly phone focused. Having said that, I don't see any real difference between a phone device and a tablet only. Is there something in particular that stands out?

I will try to get 19.0 up and running on all the devices that I make roms for. If, and that's a big if, I get 19.0 up and running, it won't be released publicly until after LineageOS releases "official" 19.0 for the majority of their devices.

The reason for waiting is that "official" 19.0 should be more or less stable and if not, the bugs should be worked out 30 to 90 days after it's released. I have no interest in hearing complaints about 19.0 features that are still clearly labeled as "work in progress", but some users clearly don't understand that and/or believe they are entitled to fully working 19.0 rom.

Fun fact, not all the TWRP images on the official TWRP site are fully tested. I downloaded a Samsung S4 phone TWRP in summer 2021 from official twrp.me site and to my utter surprise, the touch screen didn't work. I eventually found an older TWRP from twrp.me that worked.

I also have a Samsung T710 where adb and mtp do not work in TWRP in any version. I reported the problem, but received no reply or acknowledgement despite providing detailed logs. Eventually, I needed that functionality and fixed it myself.

To expand on the above post #82, it's clear to me that some, not you, have not read my FAQ regarding TWRP and that's why they have problems with TWRP. In the development phase for 18.1, I usually have 100+ failed builds meaning I use TWRP at least 100+ times. That's the reason I recommend a specific version.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] CRCinAU:
That's fair enough. I did see the FAQ 18 section you quoted, but didn't really understand it.... The links you provided pretty much add the context behind this - and I get where you're coming from now.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
If you want monthly security patches, Google releases them on the 5th of every month. Then it takes a few days for LineageOS to merge these patches into their code. Then it takes a few more days to get them tested and verified before the official merge happens.

So if you check on the 15th of every month, it's likely that I will have a 18.1 security patch made, tested and available for download. Sometimes it's earlier, sometimes it can be later. Alternatively, you can subscribe to this thread and eventually one of my posts will be announcing the Jan 5, 2022 security patch. Same goes for Feb 5, March 5, etc.

I plan to provide monthly 18.1 security patches for all of 2022. I will likely make a decision sometime September or October 2022 if 18.1 security patches will continue in 2023. That all depends on if I can get 19.0 up and running and how well it works compared to 18.1. If 19.0 runs well, then I will likely discontinue with security patches for 18.1 in 2023. Then I would make monthly security patches for 19.0 for all of 2023.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
The number of users vs developers/builders is probably 1,000 to 1. That is, for every 1,000 users, there's only one developer/builder. Even if 10% of these users were in the no effort/low effort category, that's still 100 people wasting the time of the developer/builder.

Remember, I'm doing this for FREE and I don't even have A T550. I have the SM-P550 which has it's x-axis screen reversed compared to the T550, but essentialy it's the exact same rom. So when I build and test the T550 and load it on my P550, the x-axis is completely reversed which slows down my testing.

For people who think my estimate is 1000 vs 1 is BS. See

https://stats.lineageos.org/model/gt510wifi

I'm not 100% sure how LineageOS gathers these stats. You might have to "opt-in" to help LineageOS improve during the initial setup screen and that's where these numbers come from? Right now, it shows 1090 users and 375 people using my 18.1 build, 125 using my 17.1 build. So that's 500 users using my builds. Another 540 are still using virsys 16.0 build.

If these above numbers only count those who "opt-in", then the 1090 number is significantly higher.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] kingdba:
Hi, I'm using this system now,

Everything is fine,Has anyone noticed the memory in which his system is running. We went from 2 to 1.5 grams.?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
I don't know what you are talking about, but the SM-T550 comes with 1.5GB DRAM installed. The SM-P550 (s-pen version) comes with 2.0GB DRAM installed.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] chironfr:
Hello, I've just resurrected my sm-t550 with your Rom + gapps (I need a couple of purchased apps).

As you wrote in the first post, following the instructions helps. :)

Everything works flawlessly so far, it's perfect to read ebooks and digital newspapers.

Thnaks a lot.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] CRCinAU:
I agree - it resurrected my SM-T550 with something that wasn't the bloated Samsung ROM... Now I use the tablet quite often to view CCTV feeds and use my bluetooth ODBII dongle to read engine data from my car.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] juanysara:
@retiredtab can fix clah of clans for next build?

Thanks
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20220121-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

18.1 continues to be my daily driver since March 2021.

Jan 20, 2022 release notes

1. Jan 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2022-01

2. Whatever LiineageOS changed since last December release (about 9,600 files had to be recompiled).

Note: The Jan 5 security patches were originally uploaded on Jan 6, but the "bump security string" was only submitted Jan 19 and merged Jan 20.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] CRCinAU:
Flashed and booted ok. Didn't look like I could install the update via the Lineage Recovery - so had to throw that TWRP version on to the AP partition via ODIN and then do the finger dance to get into TWRP...

All seemed to work well after that...
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] XDA_username00:
Few things that may help your cause...

1. You gotta read the first posts in this thread that explain how to get help.

2. Provide details of your current configuration, what you've installed, the specific error message you are getting, etc. The more details, the better.

3. Read the system requirements of the app/game to confirm that your configuration meets the minimum requirements.

If you do nothing else, do step 3. You should discover that Android OS is required and as such most likely won't run on Lineage OS unless you have the full Google suite/gapps installed.

Maybe if you do steps 1 and 2, someone will take the time to help you out, but my guess is that it won't work on this tablet unless you restore the original factory rom. If it works, then no need to worry about any of the steps.

Hope that helps. Cheers!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] XDA_username00:
Just wanted to report another no issue in place upgrade. Thanks again for all your work on this project. Cheers!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] maserati2011:
Netflix doesnt work
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] maserati2011:
Okay so I've tested the latest build 21-01-2022 on my T550 and the first thing I noticed is when opening netflix it gives an error, i installed drm check app and there was no widevine certification at all, after that i tried your latest build of LineageOS 17.1 and netflix worked like a charm, drm check gave me Widevine level 3 on LineageOS 17.1

Not to sound rude or demanding but are you willing to fix this issue in LOS 18.1 or should i just accept my fate and stick with LOS 17.1 ?

Thank you very much for your hard work.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
If you came from stock or another rom, you may have random files left around especially if you didn't wipe EVERYTHING and FORMAT DATA in TWRP as per FAQ11.

user @toybits had a similar problem. See posts 52 to 56.

https://xdaforums.com/t/unofficial-...t550-jan-21-2022.4305889/page-3#post-86017199

Here's my drm info using the 18.1 T550 Jan 21, 2022 build on my P550. So if you are not getting widevine certification, it's specific to your device. Something's likely messed up with the configuration, file system, etc.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] maserati2011:
I did wipe everything when i flashed this rom (1-Dalvik/ART Cache,2-Data,3-Internal Storage,4-Cache,5-System) like i always do when flashing a new rom (I never dirty flash rom's) but the issue still exist, like i said before when i flash LOS17.1 it works fine but on 18.1 it doesn't, should i try and flash an older version of LOS18.1?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20220212-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

18.1 continues to be my daily driver since March 2021.

Feb 12, 2022 release notes

1. Feb 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2022-02

2. Whatever LiineageOS changed since last January release (about 34,500 files had to be recompiled).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
Wipe data != format data. Wipe data and format data are two different functions. Format data removes any encryption and prepares the partition in a different way than wipe data. It's important to format data. That's why they are two explicit instructions.

I still think there's something left behind in your device that is probably screwing up the DRM in 18.1. There's 32 flash partitions on my P550

and likely the same on T550 so if there's a corruption or messed up configuration files, it can causes problems like this.

All my T550 18.1 roms have had working DRM/widevine since March 2021 so using older versions won't help.

Try this.

1. Backup all your data.

2. Download kernel-permissive-patcher.zip from

https://xdaforums.com/t/mod-kernel-permissive-patcher-for-android.3506338/

3. Wipe everything and FORMAT data in TWRP.

4. Install Feb 12 rom above. It's the latest build. I made no changes to DRM in the Feb build, but since it's the latest you might as well use this vs Jan 21 build. I just happened to be updating all the roms I build to the Feb 5 security patches yesterday and today. And yes Feb 12 T550 rom shows DRM widevine info on my P550.

5. After installing Feb 12 rom, install by flashing kernel-permissive-patcher.zip using TWRP. This will put the rom into selinux permissive mode (not enforcing).

6. Boot into OS.

7. Download AuroraStore_4.1.1.apk (Aurora Store) from

https://gitlab.com/AuroraOSS/Aurora...7ab2b40bbf288ccbef8d1f0/AuroraStore_4.1.1.apk

8. Install the Aurora Store apk, follow the instructions to install and login as anonymous.

9. Download devcheck by flar2.

10. Install devcheck.

11. Use devcheck and choose the system tab. Scroll down and see if widevine exists.

12. If yes, reboot back into TWRP

13. Re-install/flash Feb 12 rom again. This will remove the kernel-permissive-patcher. Then my rom will be rebooted into selinux enforcing mode.

14. Reboot into OS.

15. Use devcheck again to check DRM. If widevine exists, then whatever is/was corrupt should now be fixed.

16. You can uninstall devcheck and Aurora Store if you want. Netflix should now work since widevine exists.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] maserati2011:
Okay i have followed all steps you described and here's the result: first i wiped everything + formatted data and then flashed the feb 12 version + kernel permissive patcher, rebooted the device and installed devcheck by flar2, checked the system tab and found Widevine L3, installed Netflix and all is working fine, went back to recovery and repeated the same steps (minus the kernel permissive patcher) rebooted, went to devcheck and no widevine to be found.

my conclusion: when the rom SELinux is permissive widevine L3 is showing and netflix works, when the rom SELinux is enforcing Widevine disappears and netflix gives error.

So now that we made sure there's nothing on my device causing this issue, what is the solution? should i just use the rom with SELinux permissive? and if so, is that a security problem for me? (for example: can my accounts and passwords be stolen?)

P.S. when I was on LineageOS 17.1 SELinux was also Not Enforcing, hence why i did have Widevine L3.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
Please clarify what you mean by repeated the "same steps". Did you do steps 1 to 15 in order as I described or your own thing?

No, my P550 is selinux enforcing and it shows widevine L3. All the 18.1 devices that I build for SM-P550, SM-T350 and SM-T560NU ALL have L3 widevine and selinux enforcing.

toybits has T550 18.1 with widevine L3 and selinux enforcing.

I purposely did not build selinux enforcing for 17.1, only 18.1
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] maserati2011:
Yes i followed all the steps correctly, i did not skip a single step.

I will give you the benefit of the doubt and will reset my T550 to stock rom using odin then reflash Twrp and LOS18.1 again and will let you know if the issue has been fixed or not.

If all else fails and i can't get widevine L3 working on LOS18,1 is it safe to go back to LOS17.1 and use it with SELinux permissive? and do you still push security updates to LOS17.1 or have you stopped completely maintaining that rom for the T550?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
You do not have to go back to stock rom via odin. There might be something different with your T550 vs another T550.

I'm not building 17.1 anymore as I wrote in that thread.

Do you have access to a linux computer? If yes, run this command after you run devcheck so I can see what is going on.

# you may have to install the audit2allow program in ubuntu - I'm running lubuntu 22.04 beta
sudo apt install policycoreutils-python-utils
# run the audit
adb pull /sys/fs/selinux/policy && adb logcat -b all -d | audit2allow -p policy
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] XDA_username00:
@maserati2011

If it helps, I ran into the same issue that you originally had - but then went through it one more time and got it to work. The first time when it didn't work - I formatted first then wiped - instead of wiping everything (except my micro sd card) and then formatting. (I didn't know the order mattered, but apparently it does - thanks to @retiredtab for that clarification).

Once I saw the Widevine with L3 - I rebooted back into TWRP - and then just selected the Feb package and ran the installer without wiping or formatting. Then I wiped both caches and data, and rebooted.

All the packages were still installed, SELinux was back to enforcing, and Widevine still showed L3 and Netflix installed and ran without any issues.

Hope that helps.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] phipps_2000:
Just wanted to drop a shout out to retiredtab! ROM is awesome! Been running 20220121 for a couple weeks. Very fast and improved over stock. Haven't installed much on it yet. Runs Monopoly pretty well, which is pretty graphical. Very happy!

Now I do have a couple quick questions that I didn't find suggested answers to.

1. Recommended root method for this ROM?

2. Is it recommended and possible to enable the expanded system storage for the sdcard?

Keep up the excellent work on our neglected device!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bierma32:
@phipps_2000

For root install magisk

For my oppinion it makes no sens only trobble to use an ext.Sdcard as Sytemstorage
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] phipps_2000:
Thanks for the reply.

I cannot seem to get magisk to work. Do you happen to have a link for the method you used to get it installed and working? And what version of magisk did you use?

I realize sdcard as system storage can cause problems, just thought I would try it out as I install some fairly large apps.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bierma32:
@phipps_2000

Download the latest Version of magisk.

Is it an apk file, than you have to rename it to .zip.

Than you can flash it with the TWRP recovery .

Downloading Magisk App... | Magisk Manager

The download will automatically start in 5 seconds, please click here to access the download URL directly. If you are confused and want to know how to install the Magisk Manager on your phone you can click here.

magiskmanager.com
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
Scoped storage in Android 11 and beyond is significantly slower if your application hasn't been rewritten as per

https://developer.android.com/about/versions/11/privacy/storage

I have no plans to increase the system partition.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] phipps_2000:
Thanks for the very easy directions and the links! I had seen these directions in my research along with more complicated ones. This seems to have did the trick!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] phipps_2000:
Thanks for the response. Guess I will not concern myself with trying that then.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20220313-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

18.1 continues to be my daily driver since March 2021.

Mar 13, 2022 release notes

1. Mar 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2022-03

2. Whatever LiineageOS changed since last January release (about 5,700 files had to be recompiled).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] skills14:
installed on my t550 no issues, amazing performance on such an old device, thanks for your hard work
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] maserati2011:
Thanks but after all that trouble I reverted back to stock rom as I need NETFLIX in HD.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] maserati2011:
Thanks for your help but i think i will stick with stock rom for now, maybe if you release LOS 19 i will give it a try again.
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Zomer123:
THANK YOU SO MUCH FOR THIS AWESOME ROM!
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] Elgigio85:
can i install this rom on my t555`?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] magicmellon:
Read the FAQ on page 1 - does not work for T555
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] magicmellon:
Hi there,

I am amazed to find an up-to-date linage ROM for my old tablet. Mad props @retiredtab for maintaining this - Thank you <3.

I was wondering if youd be able to tell me about OTG charging on this ROM. I have been looking for a kernel for my SM-T550 which has is Accessory charging adaptor enabled (Outlined here)

I have just had a look at the MSM8916 Git-library which you linked on page 1, but it doesnt appear to have a OTG folder in "drivers\usb\otg\msm_otg.c". Does that suggest this build has no OTG drivers at all?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
The April 11 build has the April 5th security patches. It will be posted after I answer this.

The file msm_otg.c doesn't exist at all in my kernel directory only the documentation for it. I checked another device that also uses msm8916 kernel code and that file doesn't exist either. So without that file, I'm going to say there's no support.

$ find | grep msm_otg.*
./Documentation/usb/msm_otg.txt
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20220411-UNOFFICIAL-gt510wifi.zip. The sha256sum is

$ sha256sum lineage-18.1-20220411-UNOFFICIAL-gt510wifi.zip
b0063ab1f43b6775e39302ebdc5956fb8621ee4722f4b359dd458076a32f49c4 lineage-18.1-20220411-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

18.1 continues to be my daily driver since March 2021.

April 11, 2022 release notes

1. April 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2022-04

2. Whatever LiineageOS changed since last January release (about 11,000 files had to be recompiled).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] magicmellon:
Thanks for the confirmation. Appreciate it :)
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] skills14:
thanks again for your hard work, amazing performance on such an old device
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] skills14:
This worked for me, thanks alot
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] thedaywalker1989:
will you create a compatible package of LineageOS 19 for SM-T550 or continue on 18? @retiredtab ​
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] retiredtab:
New build called lineage-18.1-20220507-UNOFFICIAL-gt510wifi.zip

NOTE: All builds that I upload have been personally tested on my device to boot and function as described in post #1. Having said that, there's still a chance it won't work on your device due to human error, your configuration, your apps, etc. If it won't boot, always start with a complete wipe of everything and format your data. This is known has a clean install. Backup your data before a clean install.

18.1 continues to be my daily driver since March 2021.

May 7, 2022 release notes

1. May 5 security patches as per https://review.lineageos.org/q/topic:R_asb_2022-05

2. Whatever LiineageOS changed since last April release (about 4,100 files had to be recompiled).
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] VoidedKN0X:
i've install the gt510wifi on my T550 but it keeps booting into recovery :/
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] bierma32:
More details please.

Which TWRP Version you are using ?

Which files you have installed.

From which version you coming.

Was it a clean install?
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] VoidedKN0X:
I was indeed using the wrong trwp version, installed the latest one and it booted up fine
[Samsung Galaxy Tab A series ROMs, Kernels, Recover] XDA_username00:
How does one get chrome to install via Aurora store?

These airline apps require chrome browser to play their ridiculous DRM and chrome-based doesn't appear to work (tried edge).

Tablet plays Netflix on its own - so its not the usual widevine issues.

When I click install after download, nothing happens. I suspect its related to not having any gaps apps, but didn't know.

Or has anyone gotten this to play any of the shows while flying american or united?

Thanks!

(running latest May 18.1 image on sm-t550)