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[ROM][ROOT][STOCK][TINKER-EDITION][5.1.1] Galaxy Tab A 7.0 2016 SM-T280/T285

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o0o.paw

Senior Member
Dec 31, 2011
103
43
Perth
Samsung said they'd update it to Marshmallow so I thought it would get adaptible storage. Nope.

It is useless even with sd card storage (you can get it to work on this rom but it is not simple). I would be inclined to ask Samsung for a refund for selling a defective device.
 

matthewd769

Senior Member
Aug 21, 2017
288
57
So .... in closing ... the sm-t280 CAN NOT HAVE A CUSTOM ROM INSTALLED ... i have tried every custom rom and NONE can run properly ... has ANYONE got a custom rom to flsah and run on the sm-t280
 

Arceus99

Member
May 25, 2017
38
4
Any idea how to swap sd and internal memory on this crappy tablet? I have only 8g and its useless

---------- Post added at 06:24 PM ---------- Previous post was at 05:29 PM ----------



try stock rom?


Just root and use apps2sd to link apps to sd card. I use it and it works perfectly. It moves 100% of app to sd card.
Ps. You can move any app
 
Last edited:

NoCrAppleHere

Senior Member
Jan 18, 2014
767
225
Having trouble with the wifi on my SM-T280 wifi only. Issue was there even before I flashed the V5 file with ODIN. Shows all bars of signal. Says very strong and says 56 mbps speed, but no internet at all. If I toggle the wifi on/off/on, then I'm usually good, until it happens AGAIN. Now, I tried running the commands w/ ADB shell but I keep getting error messages. 1) is there a different method to fixing this issue 2) the main post tells you to run commands w/ ADB Shell to fix some wifi issues, are the issues I'm explaining going to be remedied by this or am I having different difficulties? Thanks for the help.

P.s. I've been out of the game for a while now, since Twrp CM13 on my Galaxy S3 Verizon, so please bare with me and know that I'm not a noob here. I'm just out of practice. [emoji6][emoji23]

Sent from my VS995 using Tapatalk
 

NoCrAppleHere

Senior Member
Jan 18, 2014
767
225
@jedld after flashing the commands at the bottom of the OP using adb shell, my wifi has gotten worse. It was bad before, now it's rendered the SM-T280 tablet almost unusable. Any thoughts? Thank you

Sent from my VS995 using Tapatalk
 

jedld

Senior Member
Oct 15, 2007
429
438
Bacoor
@jedld after flashing the commands at the bottom of the OP using adb shell, my wifi has gotten worse. It was bad before, now it's rendered the SM-T280 tablet almost unusable. Any thoughts? Thank you

Sent from my VS995 using Tapatalk

What sort of wifi issues are you encountering? The adb commands only fix dhcp, it shouldn't have anything to do with wifi quality issues. have you tried using a static ip to check if it works with that. The wifi chip on the T285 and T280 don't support the 5Ghz channel, so make sure your router as a 2.5 Ghz channel available.
 

NoCrAppleHere

Senior Member
Jan 18, 2014
767
225
What sort of wifi issues are you encountering? The adb commands only fix dhcp, it shouldn't have anything to do with wifi quality issues. have you tried using a static ip to check if it works with that. The wifi chip on the T285 and T280 don't support the 5Ghz channel, so make sure your router as a 2.5 Ghz channel available.
Issues are basically it disconnects often then reconnects or you are still connected, veru strong connection and everything shows it's a perfect connection, but no wifi is present. You need to toggle wifi on and off to remedy that issue. I am using an app to keep it connected to my wifi, which works, but it's not perfect. Still have the issues sometimes.

Sent from my VS995 using Tapatalk
 

wasd_03

New member
Feb 3, 2018
1
0
wifi problems persist

Heya,

first of all: Thanks a lot for the great work and effort!

The new ROM works fine, except I am also experiencing the same Wifi problem as previously reported: I can only connect with a static IP, under DHCP it keeps "Connecting..."

I made sure I am root user and USB debugging/OEM unlocking is turned on and ran the commands in the first post in the adb shell (under cmd -> adb su, adb ...)

But after a restart, the problem persists. Anyone has an idea what I overlooked and if there is a check if the fix was applied correctly? Or is there a second solution?
 

karamazov

Member
Sep 15, 2006
9
1
Adoptable storage

Hi folks!

Anyone knows how to make adoptable storage work on this rom? I use link2SD but when updating the apps they keep moving to main memory so I have to move them back manually each time((

Thx for help!!!
 

akasarf

Member
May 4, 2018
37
4
Unable to root SM T285.I do not have OEM unlock option.I would appreciate your help.

so far this is best rom that i can use daily, thx @jedld
everything is working and functional

Thanks for replying. I really want to get my device rooted. I do not have OEM unlock option in developer options.
I have used using odin to flash SMT285_sepolicy_patched_permissive.img. Did not flash. https://ibb.co/mTSFBJ
I have used using odin to flash TWRP, did not flash.
In download mode FRP lock is shown on screen. https://ibb.co/dD60BJ

Screenshots attached
Please help.
 

ashyx

Inactive Recognized Contributor
Oct 14, 2012
15,110
9,892
Thanks for replying. I really want to get my device rooted. I do not have OEM unlock option in developer options.
I have used using odin to flash SMT285_sepolicy_patched_permissive.img. Did not flash. https://ibb.co/mTSFBJ
I have used using odin to flash TWRP, did not flash.
In download mode FRP lock is shown on screen. https://ibb.co/dD60BJ

Screenshots attached
Please help.
Please refrain from double posting. Its unnecessary.
 

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  • 39
    Samsung Galaxy Tab A 7.0 LTE/WIFI 2016 TINKER EDITION ROM (DEOXED/ROOT/XPOSED)
    ============================================

    Update 01/04/2017
    -----------------------

    Tinker Edition V5.1 is now out.

    * Re-added Samsung stock camera and gallery
    * revert back to stock vold to fix issues people are having with micro sdcards

    Now available for the SM-T285, SM-T280 to follow

    Update 10/29/2016
    ------------------------
    TWRP for the SM-T285 here

    Early Build of TWRP for the T285 (see post by @ashyx will update this if an official version is released. The T280 version should be available not far behind I believe :)

    Update 09/21/2016
    -----------------------
    V5 now out (root, deodexed, xposed) for the SM-T280/T285, still working on the SM-T280

    Update 09/20/2016
    ------------------------

    Turns out this device is not as locked as we all thought it too be. See thread below for my ordeal and more details:

    http://forum.xda-developers.com/galaxy-tab-a/help/resources-samsung-galaxy-tab-7-0-2016-t3431022

    Modifications:
    ===========

    * Based on LMY47V.T285XXU0APCN
    * Stock Boot and Recovery (Not much choice since the bootloader is locked)
    * Busybox
    * Hijacked Vold (using CM 12.1 sources) to run shell scripts stored in /data/scripts/vold.init
    * Removed Touchwiz launcher and redundant samsung apps (Hancom office, Kidzone), replaced with Trebuchet
    * Enabled r/w to the external SD Card
    * Dolby Atmos mod (09/11/2016) (thanks to @Nando14sunny)
    * Deodexed/Xposed (09/13/2016) (thanks to @wanam and @rovo89)
    * soft linked /etc/hosts to /data/scripts/hosts and can be edited using adb shell (09/13/2016) (thanks to @venomrat)
    * V5: root chainfire's SuperSu 2.78 (09/21/2016) (thanks to @Chainfire)
    * stock boot animation

    Special thanks also to @ashyx for initially taking a look at this device , I haven't given up on rooting this device yet.
    Special thanks to @klemen241 for helping me try out the SM-T280 build

    Haven't done extensive testing on Xposed modules, but the pokemon go iv mod/hacked worked and that was good enough for me :) (Before pokemon Go was patched). If you use this ROM feedback is highly appreciated

    NOTES: To be safe, perform a cache wipe using recovery. I didn't need to do this personally but I haven't tested all use cases
    NOTES: Since this rom is deodexed, the first boot will take quite a while, so please be patient :).
    NOTES: if you are coming from V2 and are using the mount_ext4 apps2sd scripts please update it for additional support for the V3 ROM HERE:
    https://github.com/jedld/smt285_data_scripts

    NOTES: (09/13/2016) Unfortunately, the V3 build fails the Google SafetyNet check, will be a problem if you play Pokemon Go

    Other Notes: Removed support for zygote.init scripts in V3 as I am now using the app_process32_xposed binary, will work to get this back soon. I haven't had a need for zygote scripts though. The vold.init scripts shoud still work as before if you are using the apps2sd script

    Installation Instructions:

    Odin or Heimdall Required. I you are coming from the Stock Rom please wipe/factory reset to be sure. If you are upgrading from V1 or V2 you are not required to wipe unless there are problems. If you are upgrading to V3 cache wipe is recommended using recovery.

    --FLASH AT YOUR OWN RISK--

    1. Make sure to backup of your data and have a copy of your stock Rom in case something goes wrong.
    2. Make sure your device is OEM unlocked. (Enable Developer settings and Enable the OEM unlock settings)
    3. Extract ZIP file below and flash the tar.md5 file using ODIN, for details on this kindly look for instructions in the xda site.
    4. For Heimdall you can use 7zip to extract the system.img from the tar.md5 and just flash the system.img itself.

    Choose the appropriate download for the model (wifi only T280/ lte T285) that you have:

    WIFI ONLY Download (SM-T280)
    ==========================

    Link (V5 Deodexed, Rooted and Xposed):
    https://mega.nz/#!0Jdg0a4D!XWLES1BwCPrkBlUzqNhRfRi_91LOdawYHydQ_scV2dI

    Link (V3 Deodexed and Xposed - with special thanks to wanam with his custom Xposed build (86.0), and credits also to rovo89):
    Download from Mega (v3 09/13/2016)

    LTE Version Downloads (SM-T285)
    ===========================
    Link (V5.1 Deodexed, Rooted and Xposed):
    https://mega.nz/#!ZFFTFKYZ!NAeajNUjIgYI7zOslpWoJ2AeJ-NCKG0Ut8Buz_6eCgU

    Link (V3 Deodexed and Xposed - with special thanks to wanam with his custom Xposed build (86.0), and credits also to rovo89):
    Download from Mega (v3 09/13/2016)

    Link (Original V2 odexed version):
    Download from Mega (V2 09/11/2016)

    If you have suggestions, send me a PM.

    Other Notes (So people don't have to ask):

    * I've tried to run superuser daemonsu, but unfortunately the sepolicy scopes for vold and zygote are too narrow in this device for supersu to use despite being root. In theory a version of daemonsu can be made specifically to run on this device with a somewhat castrated functionality though I don't have access to the source code to figure it out. Navigating the sepolicy landmine is hard.


    WIFI ISSUES
    =========

    There are reports of wifi problems with the latest build due to wrong permissions with dhcp hooks, if so you can do the following (big thanks to @_mone):

    Using adb shell:

    Code:
    su
    mount -o rw,remount,rw /system
    chmod 755 /system/etc/dhcpcd/dhcpcd-run-hooks
    mount -o ro,remount,ro /system

    /system is readonly by default, which is why you need the remount commands. Reboot your device after just to make sure.
    8
    We don't have a custom kernel for the SM-T280 yet

    Hi, does this rom have selinux set to permissive? I really need it for my t280!

    The T280 uses the stock kernel, so no. However there might be some devs willing to build a permissive kernel for the T280.

    Coming soon.
    5

    Hi there!

    I'm still working on a proper custom kernel for the T280.. Samsung made this device extremely difficult to work with.. Depends on what I add to the kernel the device won't boot, even if it's just a governor or some minor modifications that I'm used to include in the kernel of my other samsung's devices.
    Today I saw your post and I've decided to share at least what I'm able to as of now, and that is a kernel that is able to set selinux to permissive (still trying to find out wtf is the trigger for the no boot).. so I've flashed this tinker edtion ROM (first time for me), made a quick set up (everything worked fine), then I've compiled a kernel (AQA4 sources) with my usual selinux patches, decompiled the included boot.img with the tinker edition ROM and replaced the kernel with my newly compiled kernel, repacked everything, applied the usual patches to the header, flashed the new boot.img and the device was in a boot loop.. So I tought was a kernel source problem, and I've used and older one (T280XXU0APL7) to compile the modified kernel and done again all the steps... again boot loop!
    Then I've remembered.. when I bought this device there was no AQA4 sources (kindly provided by samsung's OSRC when I asked for it), and I've started to work with APB6 and APL7 sources.. with those sources I was able to compile a kernel that I could use for a custom recovery but not on a samsung's firmware. Only recently I've started to work on samsung firmware because my LineageOS port was going nowhere so I've decided to try to understard how the samsung mess works like that I may be able to learn something that can help me to finally get rid of samsung's software.
    As for now I'm working on T280XXU0AQA4 and T280XXU0AQF1 firmwares and I'm able to modify how I like the system in my device but not able to create a proper system.img to share with the community (I'm having some issues with google play store), and I'm able to use a "limited" custom kernel (based on AQA4 source as AQF1 has not been released yet "already asked for it") with both firmwares..

    In conclusion: If you want a permissive kernel, with patches for your favourite root method, for samsung's official firmware AQA4 or AQF1 I can provide it with no issue, but I can't provide a custom kernel for this ROM in its current status, if @jedld updates it with a recent samsung's firmware there will be no problems in running a permissive kernel on this ROM.
    5
    E.T.A. of SM-T280 ??
    Xda rule. DO NOT ask for ETA's
    3
    Is it possible to run V4A on this rom?

    ---------- Post added at 03:37 PM ---------- Previous post was at 02:50 PM ----------

    Also I do not see BusyBox.

    hay.

    when v6?
    thx and respect from italy

    Soon, I just got caught up porting OmniROM 6.0 to this device. I'll start working on it immediately once I give up and conclude that 5.1.1 is the best it could get.