Ok, this is useful information.... Mine is at Android 8.1. How do I downgrade to Android 7?
Also, after the downgrade and TWRP+root, I guess there is no going back to Android 8...
Ok, this is useful information.... Mine is at Android 8.1. How do I downgrade to Android 7?
Also, after the downgrade and TWRP+root, I guess there is no going back to Android 8...
Thanks for this very beginner friendly how-to.
What I am wondering is about this that differs from what I used to do:
"e. SuperSU (get latest version) https://download.chainfire.eu/supersu
f. ashxy's Dm-verity and force encryption disabler https://www.androidfilehost.com/?fid=24591000424951049"
For e) I would guess this is only one way to get root. If you install Magisk later one this is not required, right?
About f) - now idea what it is needed for, can someone please explain?
What I am wondering is about this that differs from what I used to do:
"e. SuperSU (get latest version) https://download.chainfire.eu/supersu
f. ashxy's Dm-verity and force encryption disabler https://www.androidfilehost.com/?fid=24591000424951049"
For e) I would guess this is only one way to get root. If you install Magisk later one this is not required, right?
About f) - now idea what it is needed for, can someone please explain?
Ongoing saga of my SM-P580 . . .
1st post: couldn't get the install to work. In boot loop, please help.
2nd post: redownloaded all the files and did reinstall . . . WORKED! Yay!
Today: problem again . . .
I have a tablet case that will shut off the screen when I close it. When that happens the tablet locks up. Just get a black blank screen. I also can 't power down or restart the tablet using the power button; I end up doing the power/vol down/home key thing. I press and hold them til I get the blue warning screen, then press the down volume to restart. I've been powering down the tablet every time I am finished. Am I missing something? I also got an alert that TWRP app has to be updated . . . ? I haven't found any info about that; I don't want to mess with it cuz I'm sure I would screw things up.. Any suggestions would be deeply appreciated. :crying:
1st post: couldn't get the install to work. In boot loop, please help.
2nd post: redownloaded all the files and did reinstall . . . WORKED! Yay!
Today: problem again . . .
I have a tablet case that will shut off the screen when I close it. When that happens the tablet locks up. Just get a black blank screen. I also can 't power down or restart the tablet using the power button; I end up doing the power/vol down/home key thing. I press and hold them til I get the blue warning screen, then press the down volume to restart. I've been powering down the tablet every time I am finished. Am I missing something? I also got an alert that TWRP app has to be updated . . . ? I haven't found any info about that; I don't want to mess with it cuz I'm sure I would screw things up.
. Any suggestions would be deeply appreciated. :crying:
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So I got this all done on my SM-P580 with Android 8.1.0. It boots up fine. I got Magisk in there and running and added the ExSDCard Access Enable module. But I am not seeing my 1218GBB SD card as internal storage. If I try to format the SD card it does not have an option to format it as internal storage. It just refers to it as portable storage. I've looked all over reading about it, trying to figure out what is wrong. Can anyone tell me what I am missing here? Thanks in advance. I really appreciate it!
TWRP restore : failed to mount '/system'
Hello,
I have a Galaxy Tab A 2016 SM-T585
I have used ODIN to flash your [2x1]MOD_SM-T585XXS6CTC3_with_twrp-3.3.1-1-gtaxllte_and_patched_boot_with_disabled+dm-verity,+forced+encryption+disabled_without_CSC : no problem.
I have installed magisk 20.4 : no problem.
I have made a backup : no problem.
Then I tried to restore this backup : it ended with "Failed to mount '/system' (invalid argument)" and "No OS installed".
What should I do ? Thank you for your advice
Hello,
I have a Galaxy Tab A 2016 SM-T585
I have used ODIN to flash your [2x1]MOD_SM-T585XXS6CTC3_with_twrp-3.3.1-1-gtaxllte_and_patched_boot_with_disabled+dm-verity,+forced+encryption+disabled_without_CSC : no problem.
I have installed magisk 20.4 : no problem.
I have made a backup : no problem.
Then I tried to restore this backup : it ended with "Failed to mount '/system' (invalid argument)" and "No OS installed".
What should I do ? Thank you for your advice
Thanks. I finally got it working a while back. I thought I posted an update but I don't see it. I documented what I did but of course cannot find the document!
I'm actually currently trying to upgrade to a 400GB card but that's not going well. It seems like the maximum capacity for an SD card on this tablet is 256GB. So I put the 128GBB card back in and now the table wants nothing to do with it either. 
manibengood
Member
- Jan 5, 2011
- 32
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Dug this tablet out of the drawer to root and ROM for my kids. I've downloaded all the appropriate files and installed the ones that need to be installed. I'm getting stuck trying to install TWRP. I put the tablet into download mode, by holding power, home, and volume down at the same time. I select AP on Odin. Then I push start. I get a log of 0 completed/0 errors. I don't think that Odin is seeing my tablet. What could I have done wrong?
Hi Please help
i have T585XXU6CTE6 (SM-T585, Samsung Tab A6 2016) Education Tab! (No play store, can’t install unknown sourceand not enable able)
i can’t open download mode (cannot install TWRP or Root)
can’t Factory reset even from recovery: MDM error
lock screen setting is disabled in setting no way to enable it! so i can't do factory reset using PIN Code error after 15 trial
every time i turn on developer option it disabled automatically once i leave About page
any suggestions??
i have T585XXU6CTE6 (SM-T585, Samsung Tab A6 2016) Education Tab! (No play store, can’t install unknown sourceand not enable able)
i can’t open download mode (cannot install TWRP or Root)
can’t Factory reset even from recovery: MDM error
lock screen setting is disabled in setting no way to enable it! so i can't do factory reset using PIN Code error after 15 trial
every time i turn on developer option it disabled automatically once i leave About page
any suggestions??
install TWRP via ODIN
can any please explain why when I open ODIN on my laptop running Windows 10, I can NOT access the bottom portion which has the start, etc.. buttons. Very frustrating.. thanks to anyone who will help and appreciate everyone involved in this tutorial.
nevermind seems to be a pixel issue...and lack of sleep......
can any please explain why when I open ODIN on my laptop running Windows 10, I can NOT access the bottom portion which has the start, etc.. buttons. Very frustrating.. thanks to anyone who will help and appreciate everyone involved in this tutorial.
nevermind seems to be a pixel issue...and lack of sleep......
Last edited:
Hello, i have a problem to flash a rom on my SM-T580. I get an error 7 whatever i do. I've already tried different versions, even the most recent ones, none of them work. I also tried different rom versions, I get the same error.
Does anyone have a solution please ?
Does anyone have a solution please ?
If anyone is still subscribed to this thread I would love some noob help
I'm no stranger to rooting and flashing, but haven't bothered recently on my Samsung devices.
But my SM-P585 always runs into storage issues, so my main goal is to try and format my 256gb card as internal storage.
I followed a guide I found that tries to force-enable to the option via ADB, but even though I experienced no errors, it appears to have had no effect on the storage options.
Any advise on how to actually achieve this before I frisbee the tablet out the window?
I'm no stranger to rooting and flashing, but haven't bothered recently on my Samsung devices.
But my SM-P585 always runs into storage issues, so my main goal is to try and format my 256gb card as internal storage.
I followed a guide I found that tries to force-enable to the option via ADB, but even though I experienced no errors, it appears to have had no effect on the storage options.
Any advise on how to actually achieve this before I frisbee the tablet out the window?
Do a trade in to Samsung and buy a new Tab S6 or S7 with 128/256/512 GB of internal storage + mSD card.If anyone is still subscribed to this thread I would love some noob help
I'm no stranger to rooting and flashing, but haven't bothered recently on my Samsung devices.
But my SM-P585 always runs into storage issues, so my main goal is to try and format my 256gb card as internal storage.
I followed a guide I found that tries to force-enable to the option via ADB, but even though I experienced no errors, it appears to have had no effect on the storage options.
Any advise on how to actually achieve this before I frisbee the tablet out the window?
Do you understand the reason Google stop supporting apps on the SD card? First of all, it is a security risk. But MUCH more important, IMO, is that the SD card is very, very slow compared to the internal RAM, physically attached to the SoC. If you root the tablet and do a serious debloat of the apps and make sure all of the DATA is transferred to the SD card, then you shouldn't have a problem of running out of internal storage. The only exception to this that I have seen is games that stupidly insist on their DATA, not just the app itself, be stored in internal memory. Personally, I have no sympathy for people who buy a tablet and expect it to be a highend gaming device.If anyone is still subscribed to this thread I would love some noob help
I'm no stranger to rooting and flashing, but haven't bothered recently on my Samsung devices.
But my SM-P585 always runs into storage issues, so my main goal is to try and format my 256gb card as internal storage.
I followed a guide I found that tries to force-enable to the option via ADB, but even though I experienced no errors, it appears to have had no effect on the storage options.
Any advise on how to actually achieve this before I frisbee the tablet out the window?
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101Tested SM-P580, SM-T580, SM-P585
This post is designed to gather information found across this forum to give a step-by-step guide for obtaining a custom recovery TWRP and Root to 2016 Samsung Tab A tablets.
Credit to the software authors, original post creators (especially jcadduono and ashxy) and all those who contributed to the discussions to clarify all the issues.
Here is my set of instructions to gain TWRP and Root on the Tab A (WIFI) SM-P580, SM-T580, and SM-P585.
WARNING Flashing a custom recovery to your device will trip the Knox warranty bit on your phone. Check with your mobile provider to see if they will still cover warranty on Knox bit triggered devices. If you understand this risk, continue on. You generally don't have to worry, as it's incredibly hard to brick a Samsung device, and physical damage warranties should be exempt from Knox triggering. [credit: jcadduono]
If you prefer Magisk to chainfire supersu, please see the modification described in https://forum.xda-developers.com/showpost.php?p=73719123&postcount=82
1. DOWNLOAD
a. ODIN https://build.nethunter.com/samsung-tools/Odin_3.12.3.zip
b. Samsung USB Drivers http://developer.samsung.com/technical-doc/view.do?v=T000000117
c. Original firmware
For SM-P580 Search for SM-P580 at http://updato.com/firmware-archive-select-modeld. TWRP
For SM-T580, https://www.sammobile.com/firmwares/database/SM-T580/XAR/. (Thanks post #2)
For SM-P585, Search for SM-P585 at http://updato.com/firmware-archive-select-model
For SM-P580 https://dl.twrp.me/gtanotexlwifi, click twrp-3.0.2-0-gtanotexlwifi.img.tar, then follow directions to downloade. SuperSU (get latest version) https://download.chainfire.eu/supersu
For SM-P585 https://dl.twrp.me/gtanotexllte/
For SM-T580 https://dl.twrp.me/gtaxlwifi/
f. ashxy's Dm-verity and force encryption disabler https://www.androidfilehost.com/?fid=24591000424951049
2. PREPERATION
a. While running your tablet in Android, go to Settings -> About device. Tap 7 times on Build number to enable Developer options. [credit: jcadduono]
b. Now go to Settings -> Developer options. (above About device). You need to enable OEM unlock, otherwise you might end up with boot problems or be unable to flash later on. Do not ever turn off Developer Options or OEM unlock. Doing so will cause your device to refuse to boot and require a full factory restore. [credit: jcadduono]
c. Turn off your tablet.
d. Get a micro SD card
e. Copy SuperSU and dm-verity script onto microSD card
f. Install microSD card into Tablet
g. Install Samsung USB Drivers on Windows machine
h. Unzip ODIN (1a) and Original firmware (1c) on your Windows computer
i. While tablet is off, plug in usb cable between tablet and Windows computer
3. REFLASH ORIGINAL FIRMWARE (Optional)
a. Enter Download mode, press and hold Home, Down Vol, and Power until you see the Warning screen of the downloader mode. Press Vol up to continue
b. Open up ODIN, confirm that ODIN can see your tablet, click AP button on Odin. In popup, select AP_[blah blah].tar.md5 (whatever AP file you downloaded in step 1c). After selecting the file, Odin will check the signature of the file you downloaded and appear to freeze up. Let it finish, and it will report: <OSM> Checking MD5 finished Sucessfully.. <OSM> Leave CS..
c. Then click Start. The screen of the tablet should show a progress bar as your tablet is being restored to its original firmware.
d. At this point, you need to let the tablet reboot into Android. If ODIN doesn't do this itself, reboot into to download mode (home, vol down, power), then select Vol down to reboot. After a while, you will be greeted with the Welcome screen where you can select your language.
e. Power off the tablet using the power button
4. FLASH TWRP
a. Enter Download mode (press and hold Home, Down Vol, and Power) until you see the Warning screen of the downloader mode. Press Vol up to continue
b. (Re) Open up ODIN, confirm that ODIN can see your tablet,
c. Important We do not want the tablet to automatically reboot after installing TWRP. If the tablet does reboot into Android before completing the steps in Section 4 and 5, there is a good chance the stock recovery will overwrite TWRP. So click the Options tab on the left and deselect Auto Reboot. After doing that, click the Log tab so you can monitor progress
d. Click AP button on Odin. In popup, select twrp-[blah blah].img.tar (downloaded in step 1d), click Start. You will see the progress bar on your tablet. Watch the log window of Odin and wait for the message "<OSM> All threads completed. (succeed 1 / failed 0)"
5. ENTER TWRP AND CONFIGURE
a. At this point, from the last section, you should still be in Download mode on the tablet. It is important that, after flashing TWRP, to go straight to TWRP without letting the Android System reboot. To do this, Hold [Volume Down] + [Home] + [Power] to get out of Download mode and immediately swap to [Volume Up] (while still holding [Home] + [Power]) when the screen blanks. [credit: jcadduono]
b. In a few secs, you will see the TWRP first screen, you can let go of all the buttons.
c. If you don't see then TWRP boot splash try again from the start of 4. FLASH TWRP.
d. Swipe to Allow Modifications. (For some reason, TWRP has some issues with the touchscreen for some tablets. If you experience this, expect to make several swipes or taps until it properly registers. You have succeeded when you see the classic 8-button main screen of TWRP. Indeed, throughout your use of TWRP, expect that touches will often not properly register, and just keep trying until it does.)
e. Click Wipe then Format Data (do not just Wipe data), type yes and let it complete. (It is also a good practice, though not always necessary, to Wipe the Cache and Dalvik Cache whenever you make changes to the system. They are always rebuilt as needed. Now is as good a time as any.) Then click back until you get to the 8-button main screen of TWRP.
f. Click the Mount button. Select Storage button, and confirm that the Internal Storage shows non-zero MB. If it is, you know that the /data partition is now mounted properly. However, since we put the needed scripts on the microSD, go ahead and select Micro SD Card as our storage. Click Back until you are back at the 8-button main screen.
g. Click the Install button, install the SuperSU zip file you downloaded in step 1e and copied to your microSD. It will finish and say Updating partition details… …done. Click Back to get back to the install screen (do not reboot yet).
h. Install the no-verity zip file from step 1f. When it completes, you can press the Reboot System button and let your tablet reboot into Android. You can also disconnect the usb cable connecting the tablet from the computer. The tablet may reboot itself once or twice, let it do its thing, and eventually you will see the Samsung Welcome! Screen, where you can select your language.
6. CONFIRM DATA ACCESS IN TWRP
a. Before going into configuring your tablet, go ahead and turn off the tablet and re-enter TWRP (Home, Vol up, Power).
b. *Important* Since you will not be changing your system partition, this time, when you get to the "Keep System Read only?" screen, click the Keep Read Only button.
c. In the 8-button screen of TWRP, click Mount, click Select Storage. Confirm that the Internal Storage is greater than zero MB. If it is, congratulations, you have TWRP installed with /data mounted. At this point, you might want do a backup. If you want your TWRP backup to be on your microSD card, select it now while still in the Select Storage dialog.
d. Do a backup.
e. Reboot to System
7. FUTURE USE OF TWRP
a. Unless you are planning to make changes to the System, continue to choose the Read Only System when you return to TWRP. If you need to make changes to System, e.g. flash a new ROM, go back to Step 5 and install the ROM just before Step 5g
8. Click the Thanks button if my guide helped you.33Fantastic write up. Worked flawlessly on a brand new SM-P580.
Only thing to add: After finishing all the steps and the tablet is booted, at first launch of SuperSU, it will ask you to disable Knox. If you say OK, the process will likely will hang. So press OK and let SuperSU try. If it hangs for more than 30 seconds, reboot the tab, go back into SuperSU, select OK when asked again, and it should successfully disable Knox.
Also, I did not re-flash the original firmware (since this was a new tablet).3
Thanks Quoddity.
No need to use fastboot oem unlock, and just making the change to OEM unlock in the developer settings is all that is needed to unlock the device.
I prefer to use ODIN, as it is the go-to tool for working with Samsung devices, especially for installing base firmware and specific partitions (e.g. recovery). It is because of ODIN that Samsung devices have the reputation as "hard to brick". No matter how much you messed up your Samsung, all you need to do is get the device into download mode (using the key combination) and re-writing the whole device firmware with ODIN. While this will not reset the Knox, it will put the device essentially into factory reset condition. There may be other tools that accomplish this, but ODIN has yet to fail me.
Getting original firmware from updato is easy, but will take a long time (for me, up to 12 hours), so it is a good thing to get "before you need it".
Let us know how this whole thing works for you. Just make sure you have the right model number for both your firmware and TWRP. I'll be interested in hearing your outcome.
