[ROM][diOS][N] Samsung Galaxy Tab A 7.0 LTE SM-T285 (gtexslte)

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pramanayudha

Member
Dec 15, 2013
35
0
No Gapps installed (do i need to? That would be against the purpose of this Rom for me)
GPS test app installed, no fix, at all.
Location already set to accurate.

Gapps installed?
Install a gps test app, do ypu get a fix?
Location is set to accurate so NOT to gps only?



Sent from my OnePlus 7T Pro using XDA Labs
 

steadfasterX

Recognized Developer
Nov 13, 2013
5,687
15,018
No Gapps installed (do i need to? That would be against the purpose of this Rom for me)
GPS test app installed, no fix, at all.
Location already set to accurate.
No you don't need to install gapps i just wanted to know.
Well I would need logs for that but atm I'm rare of time..



Sent from my OnePlus 7T Pro using XDA Labs
 

haniya5474

New member
Aug 13, 2020
1
0
Excuse me, I'm sorry I can't speak English. mod edit: translated
I really appreciate the hard work of making this custom ROM. I hope that this will continue to be updated. I found the video recorder bug not working with various camera applications that are on

Saya sangat mengapresiasi kerja keras pembuatan custom ROM ini. Saya berharap agar ini terus di update ya. Saya menemukan bug perekam video tidak berfungsi dengan berbagai macam aplikasi camera yang ada di play store.

---------- Post added at 01:19 PM ---------- Previous post was at 01:13 PM ----------

Testing and report
Thank You for this Great JOB

---------- Post added at 07:32 PM ---------- Previous post was at 07:10 PM ----------


Migration from Lineage Jed for LOS 7.1.2
Recovery 3.3.1.1 Ok
installation Ok
Magisk Ok
Google Apps Ok
Fist Boot Ok
Wifi and sensors Ok
OpenCamera working Perfectly
ROM stable Ok no errors in all files i recomend this release for all users Galaxy Tab T285
Great Job Great ROM.
Hacker.

mod edit: translated
does the video recorder work?

apakah perekam video bekerja¿
 
Last edited by a moderator:

jedld

Senior Member
Oct 15, 2007
429
438
Bacoor
New build arrived

I had a REALLY hard time to actually make LOS 14.1 boot with cleaned sources.. thought the ramp-up will take a week at most .. but that was way off..
jedld had done several patches within AOSP and I had to find out which are required where etc. the main reason why my build were not booting at all (which is f**** hard to debug without and log and/or adb ) was that one.
.-

Ah yes, the samsung magic headers! It is one of the first things I had to figure out while hacking the SM-T285.

I am glad to know that someone is continuing development for this I am unable to support this device any longer, unfortunately I had to donate my SM-T285 for someone to have their online classes
 

steadfasterX

Recognized Developer
Nov 13, 2013
5,687
15,018
BREAKING NEWS
I've decided to create a Telegram group for all stuff around Android : sfX Android Group
and another one if you want to keep up2date whenever I build something (TWRP, SHRP, LOS, /e/, ...): sfX Automation Group

.. ah well and:

New build arrived for discoveryOS (diOS) & LineageOS (LOS)

Changelog

Release date: 2020-08-27 (diOS), 2020-08-28 (LOS)
Download: see OP



Known issues (diOS):
The new included Automate app is missing the navigation flow to be fully operational (will be fixed in the future).
The flow can be downloaded here: Kioskmode Flow (kioskmode_discoveryos.flo)
Download the flow to the device and open it in the file explorer. You get prompted to import the flow. Click start and the flow will enable a light version of a kiosk mode for the app "Waze".



.-
 
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johnnyhoang

Member
Jan 18, 2020
8
3
Thanh Hoa city
Quite ok rom. Keep forwarding.

I have installed it yesterday.
Gapps from 2017 works.
MagiskSU and MagiskHide works flawlessly that i can install Netflix from Play Store.
Camera works with third-party apps (like Hedgecam 2 or OpenCamera, recording video works with poor quality.), but in other app it doesn't.
Sometimes the screen flashes, especially Magisk Manager or youtube vanced app.
App2SD or second partition does not work, Link2SD says invalid argument. But anyway i found some workaround so it's ok.
Overall this rom works fine, but you need to improve it to use on daily usage. I hope someday the camera bug will be fixed, so that you don't need another camcorder to record (if you use as navigation tracker)
And sdcardfs limitations tho to download large apps. Honestly i'm use this tablet on my daily use ( like watching youtube, playing games, texting, etc..) and i wait a rom to flash since last year because stock rom isn't really good.
 

steadfasterX

Recognized Developer
Nov 13, 2013
5,687
15,018
I have installed it yesterday.
Gapps from 2017 works.
MagiskSU and MagiskHide works flawlessly that i can install Netflix from Play Store.
Camera works with third-party apps (like Hedgecam 2 or OpenCamera, recording video works with poor quality.), but in other app it doesn't.
Sometimes the screen flashes, especially Magisk Manager or youtube vanced app.
App2SD or second partition does not work, Link2SD says invalid argument. But anyway i found some workaround so it's ok.
Overall this rom works fine, but you need to improve it to use on daily usage. I hope someday the camera bug will be fixed, so that you don't need another camcorder to record (if you use as navigation tracker)
And sdcardfs limitations tho to download large apps. Honestly i'm use this tablet on my daily use ( like watching youtube, playing games, texting, etc..) and i wait a rom to flash since last year because stock rom isn't really good.

Well I'm glad it works in general for you while LOS is not my main target with this project. Hope u had read the ABOUT topic in the OP..?!




Sent from my OnePlus 7T Pro using XDA Labs
 

johnnyhoang

Member
Jan 18, 2020
8
3
Thanh Hoa city
Well I'm glad it works in general for you while LOS is not my main target with this project. Hope u had read the ABOUT topic in the OP..?!




Sent from my OnePlus 7T Pro using XDA Labs

Yeah i've read carefully the about OP. Although this is not your main target, but i hope you will keep forwarding this project and make it stable to use. Thank you and have a good day.
 

Aaron2345

Member
Apr 16, 2017
10
0
Amazing Rom, but bluetooth now gives me "bluetooth share keeps stopping" error, and I´ve given up on video recording so anyways, keep it up!
 

premkumar5056

Member
Mar 5, 2014
12
0
Lineage is 14.1 volte

Hi
My Samsung galaxy tab A7.0 sm-t285,update lineage is14.1 successful.but I have some problems calling time hear set can't work only loudspeakers work. I will try "jiovoice apps" also I use jio Sim, now work hear set on calling time .I am so happy:good::good:
 

SakitJiwa

Senior Member
Apr 2, 2014
71
14
Sendawar
in diOS 20200911 bluetooth connection error too

lineage-14.1-20200403-UNOFFICIAL-gtexslte.zip
and
discoveryos-14.1.0_20200508-gtexslte.zip
bluetooth works fine for that version, version after that bluetooth got crash

thx for the good rom for t285
 
Last edited:

W-Zaki

Senior Member
Dec 8, 2014
86
15
Great


61201819

This is discoveryOS (diOS)

Code:
/*
 * I'm not responsible for bricked devices, dead SD cards, thermonuclear war, or you getting fired because the alarm app failed (like it did for me...). 
 * Please do some research if you have any concerns about features included in the products you find here before flashing it! 
 * YOU are choosing to make these modifications, and if you point the finger at me for messing up your device, I will laugh at you. 
 * Your warranty will be void if you tamper with any part of your device / software.
 * Same statement for XDA.
 */

About this project: discoveryOS (or in short: diOS)

I was not satisfied with any external car navigation system I can get because either they are ultra slow, outdated, having bad user experience, missing speed cam support or simply taking ages to get a gps lock within my car.

So the main approach here is not having the best ROM for all users but for those having the same need then I have. Usually these both should not conflict so if I fix an issue for my needs it might fix yours as well. But my focus is navigation, nothing (much) else.

Examples: if Bluetooth has issues I might not solve it, if calling has issues I might not solve it, etc.

So while the whole project is about diOS (discoveryOS) I might provide from time to time pure LOS builds as well but again that is not my main target here.


Features of discoveryOS 14.1.0

  • fully based on LineageOS
  • Selinux=Enforcing
  • F-Droid (OpenSource Apps as an alternative to Google Play)
  • debloated everything not needed for diOS (check out "Known issues for diOS" for details)
  • Integrated Waze Navigation
  • Integrated Automate App
  • Speaker output optimized for speech (i.e. increasing loudness as much as possible)


Roadmap



Requirements
  • Your device need to be unlocked (seriously?!)
  • Latest TWRP/SHRP build, e.g. mine: see my recovery post
  • Do a full Nandroid backup before doing anything else!


Installation
  1. Backup ;)
  2. When you flash diOS the first time:
    Wipe: System and do a factory reset !
    A LOT of bad stuff can happen otherwise
  3. Flash the ROM
  4. Optional (I recommend f-droid + Aurora): Flash GApps (7.1 - ARM) if you like to use google apps (but keep in mind Google is eating a LOT of battery, GAPPS are known to cause many issues including bootloops, making your system slow and last but not least Google is SPYING at you..)
  5. Optional (if you want root): Flash the official LOS root-addon (addonsu-14.1-arm-signed.zip) or Magisk
  6. Boot (be patient on first boot!!! SIM detection might take a minute after the FIRST boot after clean flash as well)
  7. Configure Waze
  8. Configure Automate to always start Waze or any other Navigation app you like (will be automated or semi-automated soon)
  9. Enjoy


Known issues for LOS:
  1. no OMS support! OMS is a hack DEEP in the android sources and all these are outdated now. if you need that use jedl's build
  2. build is ENG , i.e. "adb root" will work and no auth required for ADB
  3. bluetooth is working but using the blobs by jedld's build until I find the time fixing the android sources (unfortunately the repo of jedld does not contain the full history so I have to compare manually...). Until then I keep it like that.
  4. not charging on USB connection (normal power supply works fine) - still investigating. Seems to be an issue with my kernel.
  5. If you find a bug not listed, follow the instructions here and provide me with the logs: FAQ #1

Known issues for diOS:

Keep in mind that this is brand new stuff so it may (still) contain unknown issues!
So back up regularly and frequently!

  1. same as for LOS above PLUS:
  2. This ROM is just coming with BASIC stuff so several apps you might want to see in an Android ROM are simply not there.
    Examples (excerpt only!):
    - no Camera app
    - no Browser app
    - no Gallery app
    - no Email app
    - no Calendar app
    - no <fill-in-whatever-you-are-missing>
    the complete list can be found here always
  3. If you find a bug not listed, follow the instructions here and provide me with the logs: FAQ #1


Download

Get the builds (diOS and LOS) from my leech server

Note:
  • Builds are updated when I decide to do so. There is no build cycle.


Changelogs

  • search results from this thread: click


Credits
  • LineageOS
  • jedld, really! thanks dude, not just for giving a starting point but also for providing your sources.
  • ... if I forgot to mention YOU, tell me ;)


Sources
It took me a while (2 or 3 weeks iirc) to clean up all the sources from jedld in order to be able to update and keep in sync with LOS itself.. All these can be found here:

XDA:DevDB Information
discoveryOS 14.1, ROM for the Samsung Galaxy Tab A series

Contributors
steadfasterX, jedld (without his work I would never had bought that tab! he made all the main parts until 2018!)
Source Code: https://github.com/smt285

ROM OS Version: 7.x Nougat
ROM Kernel: Linux 3.10.x
Based On: LineageOS 14.1

Version Information
Status: Beta
Beta Release Date: 2020-05-08

Created 2020-04-03
Last Updated 2020-08-27

Amazing but I hope there will be a fix for camera and bluetooth.
 
Last edited:

tuskyhusky

New member
Oct 16, 2020
1
0
Thank you for the build! Smooth as butter.
But are there known issues of bluetooth share apps keeps stopping among other users? I had a bit of an issue with the bluetooth on my device, is there any fix or work around i can try?
Thanks in advance
 

gatsu777

Member
Apr 24, 2011
6
0
I found a solution for the camera! It is possible to photograph and record videos normally with the front and rear camera using the app:
"Simple Camera - Capture photos & videos easily". It can be downloaded from the play store and has an orange icon, unfortunately I cannot place the link here.
 

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  • 11

    61201819

    This is discoveryOS (diOS)

    Code:
    /*
    * I'm not responsible for bricked devices, dead SD cards, thermonuclear war, or you getting fired because the alarm app failed (like it did for me...).
    * Please do some research if you have any concerns about features included in the products you find here before flashing it!
    * YOU are choosing to make these modifications, and if you point the finger at me for messing up your device, I will laugh at you.
    * Your warranty will be void if you tamper with any part of your device / software.
    * Same statement for XDA.
    */

    About this project: discoveryOS (or in short: diOS)

    I was not satisfied with any external car navigation system I can get because either they are ultra slow, outdated, having bad user experience, missing speed cam support or simply taking ages to get a gps lock within my car.

    So the main approach here is not having the best ROM for all users but for those having the same need then I have. Usually these both should not conflict so if I fix an issue for my needs it might fix yours as well. But my focus is navigation, nothing (much) else.

    Examples: if Camera has issues I might not solve it, if calling has issues I might not solve it, etc.




    Features of discoveryOS

    • fully based on /e/ OS for a full google-free experience
    • F-Droid (OpenSource Apps as an alternative to Google Play) including extra repos
    • debloated everything not needed for diOS (for details check this list)
    • Integrated MagicEarth Navigation
    • Integrated Automate App
    • Integrated Aurora Store
    • Speaker output optimized for speech (i.e. increasing loudness as much as possible)
    • my builds come with full OTA update support (from v2.0 on)
      (... you know that thing which informs you that a new update is there and where you just click to download + install)


    Roadmap



    Requirements
    • Your device need to be unlocked (seriously?!)
    • Latest TWRP/SHRP build is highly recommended, e.g. mine: see my recovery post
    • Do a full Nandroid backup before doing anything else!
    • Samsung STOCK firmware should be on T285XXU0AQH1.
      You can check your current firmware version in Android -> settings -> About / Phone info -> Baseband version
      If you like try first without flashing this firmware but if you encounter any issues upgrade to this version first before reporting
      Fast and (afaik) good site for downloading: https://sfirmware.com/samsung-sm-t285/
      (scroll down and type T285XXU0AQH1 in the search box, choose the one for your country, download, flash as usual, flash TWRP/SHRP again, flash this ROM)


    Installation
    1. Backup ;)
    2. When you flash diOS the first time:
      Wipe: System and do a factory reset !
      A LOT of bad stuff can happen otherwise
    3. Flash the ROM
    4. Optional (if you want root): Flash Magisk
    5. Flash OpenGapps ????? STOOOOOOOOP NO No no! you don't want that on a google-free phone! diOS contains everything you need to live without Google!
    6. Boot (be patient on first boot!!! SIM detection might take a minute after the FIRST boot after clean flash as well)
    7. Open Maps (MagicEarth) and click the download button to get your country/region maps
    8. Open Automate to import the kioskmode flow
    9. Open F-Droid -> Settings -> Repositories and choose those you want to enable (most of them are described here) & swipe down to update the repo list.
    10. Open Aurora -> choose Anonymous as long as you don't want to have paid apps working
    11. Enjoy


    Known issues
    1. no OMS support! OMS is a hack DEEP in the android sources and all these are outdated now. if you need that use jedl's build
    2. build is ENG , i.e. "adb root" will work and no auth required for ADB
    3. bluetooth is working but using the blobs by jedld's build until I find the time fixing the android sources (unfortunately the repo of jedld does not contain the full history so I have to compare manually...). Until then I keep it like that.
    4. not charging on USB connection (normal power supply works fine) - still investigating. Seems to be an issue with my kernel.
    5. This ROM is just coming with BASIC stuff so several apps you might want to see in a regular Android ROM are simply not there.
      Examples (excerpt only!):
      - no Camera app
      - no Browser app
      - no Gallery app
      - no Email app
      - no Calendar app
      - no <fill-in-whatever-you-are-missing>
      the complete list can be found here always
    6. If you find a bug not listed, follow the instructions here and provide me with the logs: FAQ #1


    Download

    Get the builds from my leech server

    Note:
    • Builds are updated when I decide to do so. There is no build cycle.


    Changelogs

    • search results from this thread: click


    Credits
    • LineageOS
    • jedld, really! thanks dude, not just for giving a starting point but also for providing your sources.
    • ... if I forgot to mention YOU, tell me ;)


    Sources
    It took me a while (2 or 3 weeks iirc) to clean up all the sources from jedld in order to be able to update and keep in sync with LOS itself.. All these can be found here:

    XDA:DevDB Information
    discoveryOS, ROM for the Samsung Galaxy Tab A series

    Contributors
    steadfasterX, jedld (without his work I would never had bought that tab! he made all the main parts until 2018!)
    Source Code: https://github.com/smt285

    ROM OS Version: 7.x Nougat
    ROM Kernel: Linux 3.10.x
    Based On: /e/ OS

    Version Information
    Status:
    Beta
    Beta Release Date: 2020-11-19

    Created 2020-04-03
    Last Updated 2020-11-20
    5
    Testing and report
    Thank You for this Great JOB

    ---------- Post added at 07:32 PM ---------- Previous post was at 07:10 PM ----------

    For those interested I will also provide SHRP (skyhawk recovery) after some testing and fine tuning ...
    Sent from my OnePlus 6T using XDA Labs
    Migration from Lineage Jed for LOS 7.1.2
    Recovery 3.3.1.1 Ok
    installation Ok
    Magisk Ok
    Google Apps Ok
    Fist Boot Ok
    Wifi and sensors Ok
    OpenCamera working Perfectly
    ROM stable Ok no errors in all files i recomend this release for all users Galaxy Tab T285
    Great Job Great ROM.
    Hacker.
    4
    New build arrived for discoveryOS (diOS)

    The very first fully customized build for GPS navigation!
    Re-branded completely to "discoveryOS (diOS)"!
    Due to the re-branding the OP has been fully re-worked to reflect all changes of this project.

    Changelog

    Release date: 2020-05-08
    Download: see OP

    Kernel:
    • nothing

    diOS:
    • initial release just for diOS!
      This includes:
      - custom boot animation
      - custom default wallpaper
      - custom build id
      - added Automate app
      - added F-Droid
      - added Waze App
      - and much more..

    CHECK OUT THE OP FOR INSTALLATION INSTRUCTIONS!
    A CLEAN FLASH, INCLUDING FACTORY RESET IS REQUIRED!


    The new included Automate app is missing the navigation flow to be fully operational (will be fixed in the future).
    The flow can be downloaded here: Kioskmode Flow (kioskmode_discoveryos.flo)
    Download the flow to the device and open it in the file explorer. You get prompted to import the flow. Click start and the flow will enable a light version of a kiosk mode for the app "Waze".

    Detailed changes:

    .-
    4
    New build arrived

    Changelog

    Release date: 2020-04-03
    Download: see OP

    initial build:

    I had a REALLY hard time to actually make LOS 14.1 boot with cleaned sources.. thought the ramp-up will take a week at most .. but that was way off..
    jedld had done several patches within AOSP and I had to find out which are required where etc. the main reason why my build were not booting at all (which is f**** hard to debug without and log and/or adb ) was that one.

    But I needed to clean the sources as several parts of these were incredible outdated and so needs to be udpated.
    I had spent several more days to cleaning up even more stuff and finally uploaded a test build.

    feel free to join but read the KNOWN ISSUES topic carefully before.
    It is still in a very early state and I have tested pretty much nothing else then boot, apps, bluetooth, WiFi :p

    Kernel:
    • switching to EUR kernel
    • implemented kernel build within LOS build!
    • added own TWRP defconfig
    • moving kernel modules like WiFi to /system
    • .... and more (see "Detailed changes")

    LOS:
    • added alle needed TWRP configs
    • moving kernel modules like WiFi to /system
    • sepolicy updates for rild
    • .... and more (see "Detailed changes")


    Detailed changes:

    .-
    3
    everything around my recovery images

    RECOVERY images

    Download (shrp + twrp)
    TWRP: here
    SHRP (recommended): here

    I provide 3 formats:
    • IMG (twrp only)
    • TAR (shrp & twrp)
    • ZIP (shrp only)

    When to use the IMG (twrp only)?
    • If you flashed a custom recovery already
    • if you like to flash by download mode with heimdall

    When to use the TAR (shrp & twrp)?
    • If you never flashed a custom recovery before you have to use this one
    • if you like to flash by download mode with ODIN or JOdin

    When to use the ZIP (shrp only)?
    • If you want to switch from TWRP
    • if you want to upgrade from one SHRP version to another
    • if you flashed the TAR of SHRP in download mode by ODIN or JOdin you HAVE to flash this ZIP in SHRP once

    How to flash the IMG?
    1. boot to your custom recovery
    2. push the IMG to your device (e.g. by adb)
    3. select flash
    4. ensure you select "IMG" (when in TWRP. when in SHRP that is not needed)
    5. select the IMG file
    6. choose "Recovery" as the "Target Partition" and flash
    7. Reboot to Recovery to complete the setup.

    How to flash the TAR?
    1. boot to download mode
    2. start ODIN/JOdin
    3. put the TAR into the AP/PDA slot
    4. ensure the "Auto Reboot" is NOT ticked/checked
    5. flash
    6. turn the device off (HOME+PWR+VOLDOWN) and directly switch just the VOLDOWN button to VOLUP when it wakes up and hold all 3 buttons until you see the recovery loading

    How to flash the ZIP?
    1. boot to your custom recovery
    2. push the ZIP to your device (e.g. by adb) (or start and use adb sideload and you are done)
    3. select flash
    4. select the ZIP & Flash
    5. Reboot to Recovery to complete the setup
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