yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab 3 8.0 Android Development] JoeDoe0:
This is a Custom ROM and not an official OEM firmware.

Therefore you have to trust these community developers that they did not put any backdoors in the ROM that could be opened up to steal your data. ;) :D :fingers-crossed:

Since Magisk Hide does not work with this ROM and it fails both SafetyNet checks (even basicIntegrity) most banking apps will not work anyway. I tried it with the pushTAN app from my bank and it does not work. :(
[Galaxy Tab 3 8.0 Android Development] JoeDoe0:
Hi tigger2014,

I just came across this older post where you are stating that you modified the OC kernel by gr8nole so that Magisk Hide works and SafetyNet passes as well.

Could you provide this modified kernel as a separate img file to allow flashing to an existing ROM?

Maybe you could even modify the standard kernel that is used in cuberio1's current build since this works very well on my T315.

I'm just missing the Magisk Hide (maybe SafetyNet pass) support to get my banking (TAN) app working.

NB: I already extracted boot.img (that includes the kernel to my knowledge) from the build that you provided for T310 and flashed it to my current LinOs14.1 build. OS boots with no issue but WiFi does not work. I tried the suggested fix and deleted the macloader file but it didn't help. Without WiFi I couldn't check if SafetyNet passes.
[Galaxy Tab 3 8.0 Android Development] tigger2014:
Im unlikely to produce a full rom build for the T315 however the reason why the WiFi did not work is due to the drivers changing in later builds of the rom, meaning even if i bundle the kernel separately it wouldn't work. Would the rom that i built for the T310 not work on your T315 (excluding the 3g of course)?
[Galaxy Tab 3 8.0 Android Development] JoeDoe0:
When I tried to install your T310 ROM on my T315 there was an error in TWRP due to wrong device. After replacing "updater-script" with all the device info in your ROM with the one from cuberio1's latest version for T315 I was able to flash it. I tried a dirty flash first followed by a clean flash. However the device would try quite some time to boot up (boot animation screen) but finally fail to load the OS and reboot.

As I stated before I was able to boot the latest cuberio1 build for my T315 with the boot.img (with modified kernel) from your latest build. I do not fully understand your comment that WiFi wouldn't work due to changed drivers in newer builds.

To my understanding even the latest cuberio1 build uses the old kernel from gr8nole (3.0.31-kerNoleCM14.1+ taken from phone info screen). The OC kernel kerNoleOC v6 from April 2017 works as well including WiFi on my T315.

Hence my question again. Would it be possible to modify the standard kernel 3.0.31-kerNoleCM14.1+ from cuberio1 builds for T315 with mountname spaces back-ported or as an alternative the OC kernel kerNoleOC for T315?

If this works it should be possible to pass SafetyNet and Magisk Hide should work as well.

I would very much appreciate your (continued) support.
[Galaxy Tab 3 8.0 Android Development] tigger2014:
The wifi issue is a mismatch of wifi drivers in the rom and the kernel, I have started a build for the lt01lte device which i believe is the T315, if this build is successful I will pm you a link to the rom as i cant test it myself as i dont own the device, if it works for you and everything is ok i will share the link publicly

EDIT

Please give the below rom a try, it should have the OC kernel and the rom should have the mount namespaces patches needed to allow magisks to work and therefore safety net.

https://androidfilehost.com/?fid=11410932744536987547

Let me know if this does everything you need.
[Galaxy Tab 3 8.0 Android Development] theo2:
can i install the rom from tigger for my T311 tablet ?
[Galaxy Tab 3 8.0 Android Development] JoeDoe0:
Thank you very much for this prompt service. :good:

Good news first. The ROM seems to work as intended and it passes both SafetyNet checks. Magisk Hide works and after using the hide function of Magisk Manager itself that renames the app package even my very reluctant ("root suspicious") banking app works. I'm still configuring the system and reinstalling my apps since I had to do a clean install with wiping data. Even with the clean install I had a problem when I directly installed OpenGapps after the ROM and then tried to boot.

First I had tried a dirty flash with just installing the ROM (only wiping Dalvik and Cache) since I came from the latest LineageOS from cuberio1. The OS started but crashed, rebooted, worked for a while just to finally crash again and refusing to fully boot up. I had to do a Clean Flash losing all system settings and installed apps but of course keeping internal storage and external SD card data.

Here the exact steps how it worked.

- Make a full backup of your existing system and data to have a fallback if this ROM doesn't work for you.

- Copy ROM, OpenGApps, and Magisk (optional) zip files to your internal storage or external SDCard

- Boot into TWRP Recovery and wipe Dalvik/ART Cache, System, Cache, and Data

- Install the ROM, reboot, and perform the initial settings to fully boot up the OS

- Reboot into recovery again

- OPTIONAL: If you want Root install latest Magisk zip (currently 17.1 stable) and reboot

- Reboot into recovery again and install latest OpenGApps (ARM , 7.1 , Nano recommended) zip

- If you installed Magisk you can now check with Magisk Manager (latest 6.0.1) the SafetyNet status​

All basic functions of my SM-T315 (LTE) like WiFi, BT, GPS, mobile data connection and even phone calls do work!!!

I'd recommend to add this ROM to the start post of this thread.

Thank you very much again tigger2014. You are my hero !!! :good::good::good:

---------- Post added at 23:49 ---------- Previous post was at 23:35 ----------

Usually there are device specific versions for the T310, T311, and T315 of the ROMs (see cuberio1 ROMs here: https://drive.google.com/drive/folders/1IkFs43Pj-CCmQQJhK9fLiV4PhdGwD8vO).

Therefore I doubt that this T315 ROM will be properly working on your T311.

Let's see if tigger2014 is inspired by the success of his T315 ROM to provide it for the T310 and T311 as well. ;) :angel:
[Galaxy Tab 3 8.0 Android Development] tigger2014:
Im glad to hear it all worked, I have just started a build for T311, it shouldn't take long and hopefully will also work.

Just a heads up, I will not be providing regular updates at all for any of the 3 variants and I have only provided a rom for the two I don't have (T311 and T315) as there is very limited development taking place within the community for them.
[Galaxy Tab 3 8.0 Android Development] JoeDoe0:
I fully understand and I'm fine with that. As long as the ROM works without (bigger) issues I don't need any updates just for the sake of monthly Security Patches. My previous 4.4.2 stock ROM didn't get any update or sec. patch for years. :D

For me the full Magisk Hide / SafetyNet support is the step change across all the LineageOS based 7.1.2 ROMs by gr8nole (this one, AICP, and crDroid) that are around.
[Galaxy Tab 3 8.0 Android Development] tigger2014:
Here is the build for the T311, this is untested so please do report back if this works ok.

https://www.androidfilehost.com/?fid=11410932744536989323
[Galaxy Tab 3 8.0 Android Development] xu3sno:
Tested this LineageOS on T311 with clean install > flash OpenGapps (armv7-7.1-pico-20181027) > reboot > system booted with "Setup Wizard keep stopping" popping up.

Went to > Settings > Apps > show system apps > two Setup Wizard apps showing up, one with LineageOS logo and the other with Android logo > tapped Setup Wizard with Android logo and give permission for Contacts and Phone > press Home button > no Home screen showing up but " Setup Wizard keep stopping " instead!

Reflashed ROM with clean install > installed Magisk (17.2) > Reboot > System running without "Setup Wizard keep stopping" popping up anymore.

Reboot to recovery mode > flashed OpenGapps > reboot > Sign in to Google > and setting up works as it should be.

SafetyNet checked > ctsProfile: true and basicIntegrity: true. :cool: :good:

However, as I tried theming with Substratum and DNA Dark Projects theme, got an error. I think that's one drawback of LineageOS compare to RR or crDroid in term of OMS theme engine!

Reverted back to crDroid 20180929 build!

Anyway, thanks [MENTION=4968646]tigger2014[/MENTION] for providing LineageOS for T311, too. Waiting crDroid build for T311 :D

Have a great weekend! :cool:
[Galaxy Tab 3 8.0 Android Development] cloche:
Hello, thanks for your work.

There is a safetynet fix for T310?
[Galaxy Tab 3 8.0 Android Development] tigger2014:
I have released roms for the T310, T311 and T315. All should pass safetynet when used with magisk.

There is a link to my AFH in the first post.
[Galaxy Tab 3 8.0 Android Development] mickcomp:
Great work [MENTION=4968646]tigger2014[/MENTION] rom very smooth and fast!!!!

I have the ROM installed on my SM-T310, which is a permanent dash mount in my car.

Only issue i have is OTG + Charge not working, which i need for my steering wheel controls to work (using a USB JoyCON EXR)

Is OTG + Charge something you can enable in the kernel? or provide a patch? On the old rom I have 64K resistor between pins 4&5 which enabled it.

Thanks

Mick
[Galaxy Tab 3 8.0 Android Development] tigger2014:
I don't want to make any promises however if you can link me with a kernel it works in i can certainly try to find the code to enable this. I've got a idea where it might be in the source but I'd need a kernel with it working, ideally a couple would be good
[Galaxy Tab 3 8.0 Android Development] mickcomp:
[I[/I]

https://xdaforums.com/showthread.php?t=2455058

Thanks.
[Galaxy Tab 3 8.0 Android Development] bichitrax:
I just got this tab (SM-T311) on android ver. 4.4.x. On the first day I tried to root and install TWRP. Unfortunately I couldn't get rooted but twrp ver.3.1.1 is there. My question...can I install this rom without root but from twrp ? Can Any body help me to root this device ? Tried several su files but no luck.
[Galaxy Tab 3 8.0 Android Development] breversa:
Since you've got TWRP installed, the hardest part is done. :)

Next one is to flash this ROM, then the corresponding LineageOS addon-su from here : https://download.lineageos.org/extras.

Boot, then go to Settings/About, tap 7 (seven) time on "Build version" (IIRC) to activate (and go to) Settings/Developers' options, scroll down a bit until your reach the root setting, and activate it ! Pfew, you're done ! :)

[MENTION=3034891]gr8nole[/MENTION] [MENTION=3390537]cuberio1[/MENTION] [MENTION=4968646]tigger2014[/MENTION] :

Is there any plan (and/or obstacles) to propose your builds as official LineageOS port ?

Having an official LineageOS port would in turn make a LineageOS for MicroG build available : https://lineage.microg.org/ (making the integration of MicroG MUCH more hassle-free) :)
[Galaxy Tab 3 8.0 Android Development] bichitrax:
Sir...many many thanks for your reply.Just now I tried this rom....with and without magix...in both cases it bootlooped. Once it just booted but immidiately boot looped.Please help....

I just want atleast Marshmallow,Google assistant,otg,mhl, and of course root (I need taskar,greenify). Please help sir.

Model no. SM-T311, Android ver..4.4.2, Baseband ver.T311DDUAMH1, Kernel ver..3.0.31-2376617dpi@SWDD5616#1 Thu Aug 7 19:37:59 KTS 2014 Build no.KOT49H. T311XXUBNH6.
[Galaxy Tab 3 8.0 Android Development] breversa:
Since your ROM is several Android versions old, have you tried flashing progressively newer ROMs ? Maybe find CyanogenMod 11, 12 then 13 before LineageOS 14 ? You''l have to do some Internet digging though...
[Galaxy Tab 3 8.0 Android Development] bichitrax:
I'll try Resurrection Remix 5.5.9 [20151213] to night.
[Galaxy Tab 3 8.0 Android Development] martrant:
Tigger's T315 ROM works indeed well...

I confirm that your ROM "lineage-14.1-20181025-UNOFFICIAL-lt01lte.zip" does indeed work fine with T315, with all functionality present and usable, save for a rather odd quirk: namely, the battery charging seems to be misbehaving. Indeed (using the original factory charger and cable that came with my T315) the lock screen displays a message "Charging slowly" and, occasionally, it gives the estimated time to complete the charging in as many as 7 hours! This is definitely not the actual case, as, in reality, the charging completes way faster than that. Also, the charge level indicator does not seem correct. E.g., with the T315 switched on, it might say it's charged to 54%. However, after powering the T315 off, the charge indicator says 66%, clearly a discrepancy.

Another glitch (which is common in all incarnations of LinOs for the Samsung Tab3 8.0) is that casting (Miracast) is not supported. The relevant settings menu item is there, but when selected, it invariably says it can't detect any nearby devices, even though a bog-standard smartTV is a couple meters away. This is a problem that existed with the original stock 4.4.2 ROM. That ROM would detect nearby devices for casting, yet it would always fail to to the casting with a message like "hardware configuration error", or somthing to that effect. At any rate, this is only a minor problem, as similar functionality can be with the "sharing" (as opposed to "casting") apps like AllCast etc.

I grasp the chance to thank you for allocating time to help us common users with our T31? tablets, these would be long ago used a doorstops if it weren't for people like grenole, cuberio and your goodself.
[Galaxy Tab 3 8.0 Android Development] bichitrax:
Finaly I abled to install this rom...first I installed R.R. the C.M. and finaly this rom.Endless thanks to the devs for keeping my old SM-T311 alive.

Devs please enable mhl (I've 55" lg tv...unfortunately that's not smart tv). And the most important is otg with charging as this tab is very old...battery is not lasting much.

Thanks devs.
[Galaxy Tab 3 8.0 Android Development] breversa:
[/COLOR]

Glad to see that progressive upgrade was the way to go. Worth to keep in mind for future reference. :)
[Galaxy Tab 3 8.0 Android Development] mickcomp:
[MENTION=4968646]tigger2014[/MENTION] have you had a chance to look into otg + charge? I would offer my help but I have little skill in this area :(

Mick
[Galaxy Tab 3 8.0 Android Development] MehdiBmm:
I am actually using the 2018/08/29 Build on my T310. The only issue I see is the battery that loads slowly along with "Charging slowly" on the lockscreen.

Can anyone tell me what is new in the 2018/09/20 build? More battery life? fast charging anything? even if just a little bit improved..
[Galaxy Tab 3 8.0 Android Development] YnGWiE27:
I'm on September build, but same problem on battery charging.

« Ma io sono già morto, e anche quella volta era una donna. »

( Spike Spiegel )
[Galaxy Tab 3 8.0 Android Development] snapdealbuy:
I can't understand so if someone help me that will my pleasure,

When i am going to download the crdriod rom by granole , their i find three types

Vopte, 3g and wifi,

I am using t311, which rom is suited for my tablet, plz response someone,

Thanking you
[Galaxy Tab 3 8.0 Android Development] xu3sno:
SMT-311 lt013g
[Galaxy Tab 3 8.0 Android Development] snapdealbuy:
If u don't mind will u plz elaborate all the three types, bcz i want to know for my mental pleasure

Thanking you:o:o
[Galaxy Tab 3 8.0 Android Development] xu3sno:
SM-T310 (Wi-Fi)

SM-T311 (3G & WiFi) As you have this type, your tab is enable 3G and WiFi network connection as well.

SM-T315 (3G, 4G/LTE & Wi-Fi)

Please read these links out:

https://www.gsmarena.com/samsung_galaxy_tab_3_8_0-5456.php

https://en.wikipedia.org/wiki/Samsung_Galaxy_Tab_3_8.0

Since you intent to install crDroid ROM on your SM-T311, download that ROM (latest build 20180920, security patch level Juli 5, 2018) by cuberio1 from link below:

https://drive.google.com/drive/folders/1_kTdxE6ptrht_MeV-Ydksb5yAZVYSQzN

https://drive.google.com/open?id=1ZP994K66tvRbZxPwAL3QM1UYK-jvTc81 (direct download)

Galaxy Tab 3 T31x crDroid forum:

https://xdaforums.com/galaxy-tab-3/development/rom-crdroid-t31x-nougat-t3580136

Happy flashing and wish you luck!

Have a great day!
[Galaxy Tab 3 8.0 Android Development] snapdealbuy:
Thank you:angel::angel:
[Galaxy Tab 3 8.0 Android Development] Droehnemeier:
There is no flashlight on my tab3...? or do you mean a white screen? You can create a white picture for that.. Cheers
[Galaxy Tab 3 8.0 Android Development] mattia.b89:
Hi guys,

a friend of mine asked me to refresh his tab (T311, of course), this is the reason why I am here!

I have been member of XDA since years... I'm not a novice... CM before, LOS now, android at its best.

I am here to ask you what I have to expect (bugs, caps, etc) from this ROM and most any suggestion are welcome, as well!

TODO list:

0- starting point, a vanilla, never tweaked T311 tab

1- install TWRP (https://xdaforums.com/showthread.php?t=2619518)

2- install LOS (from here)

It looks easy (compared to many devices in the wild) maybe too much!!! I'm missing something?

Thank you guys
[Galaxy Tab 3 8.0 Android Development] breversa:
Yes, that's it basically. Don't forget to install the addon-su to be able to activate root in the Developers' options (7 taps on "Build number" in "About device").

You're not missing anything*; this device (and many Samsung devices IMO) are really easy to work on. :)

If your tablet hasn't been cared for for a long time, you may want to run fstrim on it :

1. Either with https://play.google.com/store/apps/details?id=com.fifthelement.trimmer

2. Or from TWRP, after mounting all partitions, then going to Advanced/Terminal and typing*:

fstrim -v /system
fstrim -v /data
fstrim -v /cache

Your friend's table will soar after that*! :)

Also, you might want to ditch Play Services totally and go the MicroG way. Ask if needed. :)
[Galaxy Tab 3 8.0 Android Development] mattia.b89:
Thanks [MENTION=4555353]breversa[/MENTION]

What about call issue reported in the OP, is it still here?

Other bugs?
[Galaxy Tab 3 8.0 Android Development] breversa:
No idea*; I only have the wifi-only SM-T310.
[Galaxy Tab 3 8.0 Android Development] duncanWalpole:
OTG Gamepad issue

i can't get my Logitech Gamepad F310 to work with the latest cuberio (20/09/2018) build.
[Galaxy Tab 3 8.0 Android Development] Droehnemeier:
Delete
[Galaxy Tab 3 8.0 Android Development] ei146:
Hi everyone,

I use a T310 with cuberio1's latest build from 20/09/18. Thanks for that!

However, there is something strange I noticed. With today's apps this old tablet is no exactly a rocket anyway, but after a few hours of usage or sometimes days without reboot the device becomes slower and slower until it becomes unusable. As if the system runs out of ressources or so. It seems to me all things related to network access are most affected. After a reboot things are fine again for a while. Did anyone else notice that? Or is it just my device in dire need of a fresh and clean install?

Cheers
[Galaxy Tab 3 8.0 Android Development] nabril15:
I'm not sure how to assist. But I can suggest that you try the overclocked kernel to 1.6 or 1.8. Maybe installing it will assist. I've had it on my t310 for years, and it helps quite a bit. Look for the oc kernel thread, make a back up, and give the 1.6 version a try. Then try the 1.8 ghz version. Or perhaps, do it in reverse. Read first though.
[Galaxy Tab 3 8.0 Android Development] breversa:
Have you tried running Trimmer/fstrim once*?

https://play.google.com/store/apps/details?id=com.fifthelement.trimmer
[Galaxy Tab 3 8.0 Android Development] ei146:
Thanks for your suggestions. It turned out, that a bit of housekeeping solved my issues. I don't know what it was exactly. I removed some trash from the file system, run the trim, changed my adblocker. I also got an update for an app I use a lot, which seems to be a lot more stable. So all my fault.
[Galaxy Tab 3 8.0 Android Development] cuberio1:
Hello to all :)

A new build is up, credits gr8nole & Lineage.

December security patch included .
[Galaxy Tab 3 8.0 Android Development] xu3sno:
Many thanks [MENTION=3390537]cuberio1[/MENTION].

Should your time allow, hope crDroid not left behind :D

Have a great weekend.
[Galaxy Tab 3 8.0 Android Development] cuberio1:
Did try to build it, but it failed (as it failed the previous times I tried).

Great week-end to you too ;)
[Galaxy Tab 3 8.0 Android Development] Janzzon:
[MENTION=3390537]cuberio1[/MENTION] Would it be possible for you to combine your build with tiggers to pass safetynet? Thanks for your work on this relic.
[Galaxy Tab 3 8.0 Android Development] droiduzr2:
Can someone please verify that camera and video camera work.

I am using ResRemix (newest version, last version posted). Cameras not working. Can't Skype.

Please let me know. Thanks:highfive:
[Galaxy Tab 3 8.0 Android Development] Inazuma1200:
Hello,

i am using lineage-14.1-20190122-UNOFFICIAL-lt013g, camera and video camera works fine.
[Galaxy Tab 3 8.0 Android Development] droiduzr2:
Hello,

Can you tell us which build is the newest and supported?

Is it Tigger???

Tigger 2014's builds are newer as gr8nole no longer builds (and cuberio1 builds occasionally).

LineageOS

Old Builds by gr8nole : https://www.androidfilehost.com/?w=files&flid=140570

Builds by cuberio1 : Google Drive

Builds by Tigger2014 : https://androidfilehost.com/?a=show&w=files&flid=281549
[Galaxy Tab 3 8.0 Android Development] unsquashable:
New life to stock SM-T310

THANKS EVERYONE FOR THE GOOD WORK !!!!

:D:D:D:D:D

Just installed according to instructions latest build by cuberio1, on a stock T310.

Everything worked flawlessly after flashing.

Only caveat is that going from stock straight to 14.1 looks like first boot is a bootloop, but actually it just took pretty long, probably around 10 minutes or maybe even more (went for dinner in between) I was already deciding to reboot and flash in increments when first welcome screen came up.

After that just follow prompts, only thing I do not see working so far is the flashlight, but I am not sure if I ever used it in stock firmware.............

One quick question though since this a fairly slow machine, how do I overclock it???

Thanks again to everyone involved
[Galaxy Tab 3 8.0 Android Development] nabril15:
Look for the overclock thread and you'll see 1.6ghz and 1.8ghz options. Flash the 1.6 first, after making a backup, of course. If that works fine, then try the 1.8ghz version.
[Galaxy Tab 3 8.0 Android Development] fulgura91:
Flashlight? my t310 has no flashlight ...
[Galaxy Tab 3 8.0 Android Development] unsquashable:
You are absolutely right.....no flash on T310

Got confused since drop down quick settings showed flashlight and as I said not sure if I used it before.

Thanks
[Galaxy Tab 3 8.0 Android Development] unsquashable:
Thanks I am quite a noob :D in flashing just the kernel.

Sorry to be such a PTA, could you be so kind to give a more step by step.

I know have to backup with TWRP, but what?

and then flash the new image

Thanks in advance
[Galaxy Tab 3 8.0 Android Development] droiduzr2:
Do we use Magisk or SuperSu for Root?

Thanks!
[Galaxy Tab 3 8.0 Android Development] nabril15:
No problem.

Donwload the latest img file for 1.6ghz.

Make your backup in twrp.

In twrp flash that img file to the boot partition and not the recovery partition. Select flash image file and locate your download.

Reboot.

I suggest that you read the thread for the kernel that is in this same forum. Look for oc kernel. A lot of people have gotten bootloops and issues with this; I was fortunate that I didn't. So read, read and read more in that post.

Good luck.
[Galaxy Tab 3 8.0 Android Development] astracd:
Magisk works perfect.
[Galaxy Tab 3 8.0 Android Development] unsquashable:
Thanks for the feedback, tried the 1.6 Ghz version and boot loop.

Later on tried the 1.8Ghz version and works like a champ, only problem is my CPU heats up too much so I limited to 1.6 Ghz.

So now the venerable T310 tab3 8.0 runs LineageOS 14 and the modified 1.8 V6 kernel

thanks again everyone

:):):):):):)