[UNOFFICIAL][ROM]BETA LineageOS 18.1 for SM-T715 - May 14, 2023

metterschling · Jan 22, 2023

January build lineage-18.1-20230122-UNOFFICIAL-gts28ltexx.zip uploaded. Please see FAQ #24 for the download link.

January 22, 2023 release notes:

January 2023 LineageOS & Android security fixes. >4200 files changed.

If you are coming from a previous version of these builds, you can dirty flash, otherwise please perform a factory reset and format data before installing this ROM.

Enjoy

metterschling · Feb 18, 2023

February build lineage-18.1-20230218-UNOFFICIAL-gts28ltexx.zip uploaded. Please see FAQ #24 for the download link.

February 18, 2023 release notes:

February 2023 LineageOS & Android security fixes. >21000 files changed.

If you are coming from a previous version of these builds, you can dirty flash, otherwise please perform a factory reset and format data before installing this ROM.

Enjoy!

samgs2 · Feb 26, 2023

Does this rom work with Udemy App? I have tried other videos dont play. can someone check to see if its just my device? thank you

GRAM333 · Feb 27, 2023

thanks for all the hard work put in to creating this,,,i have t715lte and android 11 working great but having problems with phone...i can phone out but no one can phone me....i can hear them but they cant hear me,,,,is it possible the calling problems will be fixed or is it not possible.????...i dont mind using speaker phone for calls...i have not rooted the tablet does that make a difference with phone call problem..????.....thanks

metterschling · Feb 28, 2023

GRAM333 said:
thanks for all the hard work put in to creating this,,,i have t715lte and android 11 working great but having problems with phone...i can phone out but no one can phone me....i can hear them but they cant hear me,,,,is it possible the calling problems will be fixed or is it not possible.????...i dont mind using speaker phone for calls...i have not rooted the tablet does that make a difference with phone call problem..????.....thanks

No need to root, I also don't use root. As I wrote in the opening post, attempts to use a bluetooth device for calls or web telephony will cause microphone to stop working until you reboot. I tested telephony but I might have missed testing inbound calls with the latest release, let me double-check if I can find something.

metterschling · Feb 28, 2023

samgs2 said:
Does this rom work with Udemy App? I have tried other videos dont play. can someone check to see if its just my device? thank you

Can't tell, Udemy seems not available on F-Droid which is the only store I'm using. Udemy content is also available on the web, isn't it? So you might use a browser to double-check if it is the content or the app. It might also be related to DRM support restrictions noted above, can you try to use a lower resolution?

GRAM333 · Mar 3, 2023

ok this is best build i have found all seems fast....calls are working both ways...one problem is it takes maybe 5 seconds before the call starts working and they can hear me or i can hear them....do you think this can be fixed or is there any work arounds...,,i am using the speaker phone for calls ....other than that i very happy with this ...the tab s2 is great tablet with 4.3 screen,,,,im surprised Samsung never released an updated model with the latest specs,,,i even tried newest ipad mini but cant make calls only sim card data.???........thanks for all the hard work with this build

mikelosat · Mar 11, 2023

LineAgeOs is truly a power and this ROM demonstrates it, the performance of my SM-T715 is formidable, I don't understand how the L.A.O parent company has not created a specific stable version for this LTE TABLET which still remains a UNIQUE piece today. The big problem is focused precisely on the LTE system, calls are difficult for a number of reasons and the bad audio when sending voice messages with apps. of messaging. I hope we get to a stable version where these bugs are fixed, there are other small problems but not as serious as the LTE function.
Anyway, thanks to the author for giving us the chance to bring this 2015 device back to life.

kekesed97 · Mar 22, 2023

Hi, thanks for your efforts bringing this tab alive to see another tomorrow.
I just want to ask if there's a possible LOS 19 support for this tab?

metterschling · Apr 1, 2023

March build lineage-18.1-20230326-UNOFFICIAL-gts28ltexx.zip uploaded. Please see FAQ #24 for the download link.

March 26, 2023 release notes:

March 2023 LineageOS & Android security fixes. >27000 files changed.

If you are coming from a previous version of these builds, you can dirty flash, otherwise please perform a factory reset and format data before installing this ROM.

Enjoy!

metterschling · Apr 1, 2023

kekesed97 said:
Hi, thanks for your efforts bringing this tab alive to see another tomorrow.
I just want to ask if there's a possible LOS 19 support for this tab?

I did in fact work together with @retiredtab and created a LOS19.1 T715 build, but it did not meet my quality expectations (ie. telephony audio was not working at all) so I decided to skip that version.

metterschling · Apr 1, 2023

mikelosat said:
I hope we get to a stable version where these bugs are fixed, there are other small problems but not as serious as the LTE function.
Anyway, thanks to the author for giving us the chance to bring this 2015 device back to life.

I am repeating myself, please see previous posts in this thread: LTE is working well and stable, you can use it for mobile data perfectly and same applies to most if not all of the other functionality apart from telephony audio.

I have extended to opening post (see "what does not work", item #4) to set expectations right like also mentioned in the above discussions.

mikelosat · Apr 1, 2023

metterschling said:
I am repeating myself, please see previous posts in this thread: LTE is working well and stable, you can use it for mobile data perfectly and same applies to most if not all of the other functionality apart from telephony audio.

I have extended to opening post (see "what does not work", item #4) to set expectations right like also mentioned in the above discussions.

Yes, when I refer to problems concerning LTE I refer to audio that does not even allow you to associate a Bluetooth device, it is possible to speak only in speakerphone.

metterschling · Apr 30, 2023

April build lineage-18.1-20230423-UNOFFICIAL-gts28ltexx.zip uploaded. Please see FAQ #24 for the download link.

April 23, 2023 release notes:

April 2023 LineageOS & Android security fixes. >4600 files changed.

If you are coming from a previous version of these builds, you can dirty flash, otherwise please perform a factory reset and format data before installing this ROM.

Enjoy!

Don K · Apr 30, 2023

Thank you, best rom for my sm-715

GRAM333 · Apr 30, 2023

great,,,,,,,thanks for the update

GRAM333 · May 2, 2023

dirty flash worked great ,,,i have to use ABD commands to make it boot to twrp,,,,,couldnt do it with buttons press method...

metterschling · May 18, 2023

Don K said:
Thank you, best rom for my sm-715

Thank you @Don K for the positive feedback! Keeps me motivated to spend the extra time for development and building which is not easy to reserve with a busy "real life".

GRAM333 said:
great,,,,,,,thanks for the update

You're welcome. Just uploaded the new build with May Android security patches, so another update waiting to be performed.

GRAM333 said:
dirty flash worked great ,,,i have to use ABD commands to make it boot to twrp,,,,,couldnt do it with buttons press method...

I use the "Advanced restart" setting. Once you have this enabled this in the settings, you can long-press the power button, then select to reboot to recovery after selecting "On/Off -> Reboot".

metterschling · May 18, 2023

May build lineage-18.1-20230514-UNOFFICIAL-gts28ltexx.zip uploaded. Please see FAQ #24 for the download link.

May 14, 2023 release notes:

May 2023 LineageOS & Android security fixes. >5600 files changed.

If you are coming from a previous version of these builds, you can dirty flash, otherwise please perform a factory reset and format data before installing this ROM.

Enjoy!

GRAM333 · May 18, 2023

metterschling said:
Thank you @Don K for the positive feedback! Keeps me motivated to spend the extra time for development and building which is not easy to reserve with a busy "real life".

You're welcome. Just uploaded the new build with May Android security patches, so another update waiting to be performed.

I use the "Advanced restart" setting. Once you have this enabled this in the settings, you can long-press the power button, then select to reboot to recovery after selecting "On/Off -> Reboot".

hi ..i have t715,,,if i go to developer options i cannot find "advanced start",,???

Question	Answer
Q1. Can I build this ROM for myself? Where are the source and kernel source files?	A1. Yes, you can. The source files are listed below. Kernel https://github.com/metterschlg/android_kernel_samsung_universal5433 Device Tree https://github.com/metterschlg/android_device_samsung_gts2-common-selinux https://github.com/metterschlg/android_device_samsung_gts28ltexx Vendor https://github.com/metterschlg/proprietary_vendor_samsung In addition, there is a repo diff file for device-specific tweaks needed to work and a roomservice.xml (local manifest file) file so you can build this rom yourself. The other patch required for tcp/ip is at https://github.com/DerpFest-11/pack...mmit/22fd53a977eeaf4e36be7bf6358ecf2c2737fa5e Build manifest can be found at https://github.com/metterschlg/local_manifests/blob/lineage-18.1/gts28ltexx.xml Build environment setup is docmented (as code) at https://github.com/metterschlg/los-devel-scripts
Q2. Is this ROM suitable as a daily driver?	A2. It might be, depending on your requirements. You would need to try it yourself, with your preferred apps, to see if suits your purposes. I've been using it myself since mid April 2022 with no major issues.
Q3. What do I do if my app xyz doesn't work?	A3. I can't help diagnose problems with random apps I know nothing about. If the app is critically important to you and it doesn't work on this ROM, go back to a ROM where it did work.
Q4. Why is this ROM laggy and/or buggy?	A4. The device will be noticeably slower if you're using any Gapps package. Consider going gapps-free. A lot of apps will work without Google's services, or there exist alternatives that will. Check out F-Droid, Aurora Store, NewPipe, etc.
Q5. What TWRP should I use?	A5. I use official TWRP 3.6.1_9. Get it from https://twrp.me/samsung/samsunggalaxytabs280ltexx2015.html
Q6. Why should I use this ROM?	A6. You don't have to! If you don't like it, go back to your old ROM.
Q7. Will you offer monthly updates with security patches?	A7. I plan to do so. I will try to update the ROM with the monthly security patches after LineageOS has released them, free time permitting. Each monthly build will be quickly tested to make sure the ROM still works, before it's made available (which might in some cases delay the release).
Q8. I'm a newbie. Can you provide step by step instructions?	A8. We simply don't have the time to do this, but there are lots of tutorials, videos, etc online showing how to flash custom ROMs and how to deal with common problems. Newbie questions are also accepted in the XDA General Questions and Answers forum. Having said that, @pflyaz has kindly make a guide in post #37.
Q9. Can I report a bug with respect to the ROM?	A9. Yes, but you need to supply the following information. If you don't, I won't look at it. Provide an adb logcat of the problem, and if possible describe how to reproduce it. Note that I can't help if it involves downloading any app I don't already use that requires payment or creating a userid/password. To get a logcat, open a terminal window on your PC, connect your device to it via USB, and do this: Bash: `# clear the logcat first adb logcat -c # start logcat trace adb logcat > problem.txt # reproduce problem # wait until problem has occurred, # then stop trace by hitting ctrl-c then zip the problem.txt file # before uploading it.`
Q10. How long will you build 18.1 for this device?	A10. For now, 18.1 will be built for all of 2022. After that, we will make a decision depending on a number of factors.
Q11. Do I need to erase everything and format my data before installing this ROM for the first time?	A11. Under most circumstances, yes. If you're coming from stock Samsung Android, or an earlier version of LineageOS, or a different custom ROM, you MUST 'clean flash': boot to TWRP recovery, wipe system, data, dalvik/art cache, and cache partitions, then Format Data, then install this ROM. If you don't do this you're likely to run into problems, such as getting stuck at the boot animation for more than 5 minutes.
Q12. What Gapps should I use?	A12. Your choice! There are several well-known Gapps packages, such as NikGapps, BiTGapps, ~~OpenGapps~~, and MindTheGapps. OpenGapps is being removed as per this post. Do your own research as to what is the most reliable gapps option for you. I recommend installing the SMALLEST version of any of these, preferably with just the minimum Google services needed to access the Play Store and run apps that depend on Google services. You could also consider Google alternatives, such as Aurora Store, which mirrors the Google Play Store apps but doesn't need any Google services itself. Many Play Store apps do not actually depend on Google services. If you are going to install any Gapps package, follow the installation instructions given for that particular package.
Q13. I'm having problems with Gapps. Can you tell me why it's not working?	A13. I can't answer any questions about Gapps, because I don't use them. Ask your questions on the XDA thread for the Gapps package you're using.
Q14. Why isn't my post answered?	A14. There are several possible reasons: the question is answered in the FAQ (in which case it will be ignored completely); or it involves apps or operating systems that I don't use; or it's about Gapps, which I don't use; or I simply have not had time to answer any questions.
Q15. What speed up/optimization tips do you suggest?	A15. These steps can make a big difference to performance: Turn off animations. Go to Settings > System > Developer options, scroll down to the Drawing section, and set Window, Transition and Animator scale all to "Animation off". Don't install Gapps unless you depend on something that only Google is providing. Use Aurora Store to get your preferred Play Store apps - they will all be available on Aurora Store. You can choose to access this anonymously or use a Google account. Don't run more than two apps at the same time. You can probably listen to music in the background and use a web browser at the same time. Use a web browser with built-in adblock and privacy features, such as Brave. Use NewPipe to watch your streaming content. It has built in adblock so you don't have to watch forced ads. Look for apps that are open source, ad-free and lightweight.
Q16. Does this ROM support Magisk so I can root my device?	A16. Magisk works with this ROM and I'm using it, but that could change with any revision and changes by Google. However I can't help with any related issues. Direct any questions about Magisk to the XDA Magisk forum.
Q17. Will this ROM ever become official?	A17. Never. Official maintainers have onerous responsibilities, and I know my device trees, code organization and git commits will NOT meet LineageOS standards. I'm not able or willing to take on the responsibilities and commit the extra time to supporting an official build.
Q18. What is the difference between this ROM and others?	A18. This ROM tries to be pure LineageOS with little or no modification. Other ROMs may come with a different UI, different bundled apps, etc.
Q19. Will there be any major 18.1 code modifications in the future?	A19. I don't anticipate any major modifications. There may be some slight tweaking to the SEpolicy, small bug fixes and minor code cleanup, but all the hard work - getting the ROM up and running, and fixing all the major bugs - has been done. This doesn't mean the code is perfect or well organized, but I won't be making any major changes.
Q20. Why did you fork the trees?	A20. I wanted my own private branch where I could make changes that would only affect my own personal builds.
Q21. Can you build a variant of this device? For example, a S-pen version?	A21. I cannot and will not try to build for a variant device if I don't physically have that device. I have to be able to boot and test it myself, and there's no guarantee that I can get those variant features working. So I will NEVER build T710, T810 and T815.
Q22. Does this ROM have any wifi connection issues?	A22. This ROM's wifi has been stable on the specified device ever since lpedia and retiredtab determined the root cause of the wifi problems back in July 2021 and re-installed the original S2 network 'blobs' with LOS 17.1.
Q23. Is this ROM secure so I can do financial transactions?	A23. Although Android monthly security patches do improve general security, this ROM's outdated kernel and old proprietary vendor blobs/drivers will NEVER get updates of any kind, and could have significant security holes. In addition, although the ROM is SElinux enforcing, there's a good chance that the rules written (about 800+ lines of code) have some errors. If the device is rooted, this would further weaken the security. With this information, it's up to you to make an informed decision about whether you trust this ROM to be secure enough for your financial transactions.
Q24. Okay, I understand the consequences and willing to take the risks outlined, now where can I find the BETA ROM?	A24. Downloads are at https://sourceforge.net/projects/los4sgt/files/los18.1/ Please note that there are two builds for every date. Start with the enforcing build, if you hit issues, flash the permissive boot image to determine if your issue is related to SELinux. If you have Magisk installed, you first need to patch the permissive boot image with the Magisk app before flashing. If your initial enforcing build install does not have working RIL, you might need to fix SELinux labeling of your EFS partition. To do so, use ADB in root mode. Please note that ADB root needs to be enabled in the developer options of your device. Then use the following commands from a PC connected via ADB: Bash: `adb root adb shell # Check if SELinux relabeling is required, do not modify anything restorecon -R -v -n /efs # If you see some "Relabeling..." output, run the real relabeling restorecon -R -v /efs`

[UNOFFICIAL][ROM]BETA LineageOS 18.1 for SM-T715 - May 14, 2023

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