T-377v TWRP/Lineage/Locked Retail Mode - Samsung Galaxy Tab E Questions & Answers

I have a T-377v that was donated (I work on laptops, tablets, and phones considered beyond help...) which had its first life as a DoorDash tablet. I am trying to... Unlock it, or otherwise get it to a normal working state.
As it stands, it has no chrome, play store, and settings wont allow developer/usb debug.
Odin doesn't see it in download mode, tried installing official firmware and twrp feom microsd but it failed due to either signature verification failed or E:\ Footer is wrong.
I can get it going in safe mode, however. It will allow me to enable installation from 3rd party sources but when the apps (chrome, settings app w/ dev options) nstall I get no shortcuts and cant find them, tho they seem to be installed.
Anyone out there have ANY ideas? I mean, Were stuck at home here so I am just banging my head against a wall here....

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[Q] Nook Touch + Market Stopped working

So i have a Nook Simple Touch I was using about 9 months ago, which fell to disuse for a bit for a variety of reasons. It's running 1.1.0, and is rooted.
I dusted it off to recently give it some more use again, and wanted to update some of the apps, but discovered that the Market doesn't seem to work anymore - I know it used to, but now, whenever I try to download anything, I get a dialog: "Download Errror: Download was unsuccessful, please try again." I've waited an extra day, as I remember that was originally necessary to complete the registration process, but still nothing. Searching (with Market Search) works, even for things I haven't looked up before, and it still recognizes my account, as I see my email, though I noticed that the Nook Touch doesn't get listed in the Google Play Store under devices.
Any ideas what might be going wrong here, or things to try? I'm also willing to upgrade to a newer firmware (1.2.1), but am not sure of the best method to update a rooted device. I can pull it into a separate post, but I'll include it here for now:
I'm sure I'l have to root again, but Is it possible to upgrade the rooted device and then simply re-root, or will I lose everything I've installed? Is it just better to wipe, update and re-root? If so, is there any convenient way to keep all of my settings?
Thanks!
mrgygar said:
So i have a Nook Simple Touch I was using about 9 months ago, which fell to disuse for a bit for a variety of reasons. It's running 1.1.0, and is rooted.
I dusted it off to recently give it some more use again, and wanted to update some of the apps, but discovered that the Market doesn't seem to work anymore - I know it used to, but now, whenever I try to download anything, I get a dialog: "Download Errror: Download was unsuccessful, please try again." I've waited an extra day, as I remember that was originally necessary to complete the registration process, but still nothing. Searching (with Market Search) works, even for things I haven't looked up before, and it still recognizes my account, as I see my email, though I noticed that the Nook Touch doesn't get listed in the Google Play Store under devices.
Any ideas what might be going wrong here, or things to try? I'm also willing to upgrade to a newer firmware (1.2.1), but am not sure of the best method to update a rooted device. I can pull it into a separate post, but I'll include it here for now:
I'm sure I'l have to root again, but Is it possible to upgrade the rooted device and then simply re-root, or will I lose everything I've installed? Is it just better to wipe, update and re-root? If so, is there any convenient way to keep all of my settings?
Thanks!
Click to expand...
Click to collapse
Sad, no one wants to reply. Or perhaps no one knows.
Did a backup, and experimented. I couldn't update directly, so I wiped back to a stock ROM, and upgraded to 1.2.1. Rooted with ManualNooter, and the market worked. So I have no idea what was going on, but it works now. Sadly, a computer accident made me lose my backups (including unrooted images). But at least I've got something functional.
I am currently in the same boat with my NST (BNRV300) running rooted 1.1.2. I last installed and/or updated some Market apps successfully perhaps about a year ago, and have not made any other change to the Nook, so I am at a lost as to what might be the cause. Any pointers would be greatly appreciated.
For now, my workaround this problem is to download the desired app's apk file from an alternate source (e.g., APKPure) then side-load it onto the NST.
My guess would be that somehow your authtication with Google has been lost on the device.
If you go to the PlayStore on a computer do you see your NST listed as a device, and if so, when you select an app that way does it eventually appear on your NST?
Sent from my NST
nmyshkin said:
My guess would be that somehow your authtication with Google has been lost on the device.
If you go to the PlayStore on a computer do you see your NST listed as a device, and if so, when you select an app that way does it eventually appear on your NST?
Click to expand...
Click to collapse
I think you are right -- my NST credential with the Playstore must have expired or more likely become invalid when I changed my password on my Gmail account.
If so I can't figure out how to re-validate the credential: I recall entering my Google login/password via the YouTube app during the course of rooting my NST using the MinimalTouch tool's 2-phase process, but now I can't even get the YouTube app to start (error message: ... problem starting up, please check your network connection and system time).
Look here
I responded to a related issue awhile back. Not sure if the info at the link might kick-start the signing in process.
Thanks for the pointer.
I decided to go the route of "factory reset, upgrade to 1.2.1 and re-root using Nook Manager", as simply re-rooting 1.1.2 using the old tool (Minimal Touch) is tedious & somewhat error-prone -- plus I'd like to try out 1.2.1.
That was what I would usually suggest but the farther I have gotten from that "day 1", the less likely I am to take/offer the same advice. I've made so many modifications at this point I don't think I'd ever get it back to its present state! Back up early and often...and, apparently, access the Market every so often, even if you don't want anything.
Good luck!

LG Leon- Google Services Stops Working After Root

help! LG Leon- rooted-disabled Google services-can't comple lg wizard - ERRORS
Hi sorry for posting the wrong section if I did.
Oj so I rooted the MetroPCS LG Leon and then restarted , got the LG set up screen I cannot finish the set up because I get those stupid unfortunately Google play services stop working errors and it keeps me on the setup screen.
I was able to accesss the accessibility settings and click on one of the website links and get on the web I downloaded the same app that allows me to enable and disable stuff so I disabled the LG setup Wizard and I'm able to use my phone but of course with tons of errors I I tried to reenable all Google services I tried to reinstall them I hard reset many Times I can't see my notification bar like text messages or my Wi-Fi signal being on I was able to enable USB debugging but when I plug into the computer it does not give me the options menu : charge only or in PTP or whatever i can't even see the files in my phone
when I try to fix certain settings it's says I need tor complete the wizard
so I'm asking how to get around this or how can I reinstall the whole thing back to stock softwareor to stop all these error ...even if I have to have Google play back
Please thanks
Hi,
I'm not sure why your problem occurred and if you still have it, but if you want to reinstall your system and return to stock, you want to flash appropriate firmware.
You can find firmware matching your device here. Just type your IMEI and latest firmware will appear. Download it and follow steps on how to flash .kdz file with LG Flash Tool in this guide.
I had the same problem, but restarting fixed it. If that doesn't help, reboot to safe mode and then back.

Partially corrupted software, can't access developer options.. What to do?

Hello,
I am on stock 6.0.1 locked bootloader. Yesterday suddenly my software got partially corrupted. It boots fine but the status bar and on screen controls like menu button are not working. Also, clicking on build number isn't doing anything. An ota was available and I updated it but still its in the same state. Fast boot mode is accessible. I am using xt1562. Is there any way by which I can flash a full stock/custom firmware with/without rooting/unlocking my phone? I tried to download the stock recovery from github/filefactory but it keeps on getting canceled after 200mb or so. Can someone please guide me or provide me a resumeable link to 107.70 firmware? TIA
Regards
redlag said:
Hello,
I am on stock 6.0.1 locked bootloader. Yesterday suddenly my software got partially corrupted. It boots fine but the status bar and on screen controls like menu button are not working. Also, clicking on build number isn't doing anything. An ota was available and I updated it but still its in the same state. Fast boot mode is accessible. I am using xt1562. Is there any way by which I can flash a full stock/custom firmware with/without rooting/unlocking my phone? I tried to download the stock recovery from github/filefactory but it keeps on getting canceled after 200mb or so. Can someone please guide me or provide me a resumeable link to 107.70 firmware? TIA
Regards
Click to expand...
Click to collapse
You should be albe to flash original firmware with locked bootloader, the best option is to flash exactly the same one you've currently got on your phone.
However, I'd start from installing Activity Launcher (download from playstore) and launching com.google.android.setupwizard.SetupWizardTestActivity. It looks like yor phone is in setup mode for some reason, just like it is when you boot it for the very first time. This activity will take you through the Setup Wizard, hopefully something "clicks" in your system when you finish it and your home button functions, etc. will be restored. If this doesn't work I'd try factory reset before flashing firmware.
minimale_ldz said:
You should be albe to flash original firmware with locked bootloader, the best option is to flash exactly the same one you've currently got on your phone.
However, I'd start from installing Activity Launcher (download from playstore) and launching com.google.android.setupwizard.SetupWizardTestActivity. It looks like yor phone is in setup mode for some reason, just like it is when you boot it for the very first time. This activity will take you through the Setup Wizard, hopefully something "clicks" in your system when you finish it and your home button functions, etc. will be restored. If this doesn't work I'd try factory reset before flashing firmware.
Click to expand...
Click to collapse
I have 107-70-1 but cant seem to be able to find it? The other one is not a resumeable link and downloads break in between. I will try the activity launcher and let you know. I already tried factory reset from setting and facroty mode from fastbook but it did not work.
Edit: The activity Launcher thing worked! Thanks!
redlag said:
Hello,
I am on stock 6.0.1 locked bootloader. Yesterday suddenly my software got partially corrupted. It boots fine but the status bar and on screen controls like menu button are not working. Also, clicking on build number isn't doing anything. An ota was available and I updated it but still its in the same state. Fast boot mode is accessible. I am using xt1562. Is there any way by which I can flash a full stock/custom firmware with/without rooting/unlocking my phone? I tried to download the stock recovery from github/filefactory but it keeps on getting canceled after 200mb or so. Can someone please guide me or provide me a resumeable link to 107.70 firmware? TIA
Regards
Click to expand...
Click to collapse
First of all when you have the opportunity quickly go to the developer mode and check OEM unlock. Then you use fastboot to flash stuff and get things correct
there is also usb debbuging app on playstore to access from there..
kos25k said:
there is also usb debbuging app on playstore to access from there..
Click to expand...
Click to collapse
It won't work if the phone is in setup mode and Developer's options aren't unlocked
i remember lately i had formated my phone and for some unknow reason my dev. mode wasn't showing atall.then i tryied this app and solved it.it doesn't have dev. options inside,it just opens stock devs. settings.
kos25k said:
i remember lately i had formated my phone and for some unknow reason my dev. mode wasn't showing atall.then i tryied this app and solved it.it doesn't have dev. options inside,it just opens stock devs. settings.
Click to expand...
Click to collapse
AFAIK you can't do it in setup mode, even with an app, because ADB access is blocked on system settings level.
ooooh yes sorry.mine was booting normally..
minimale_ldz said:
You should be albe to flash original firmware with locked bootloader, the best option is to flash exactly the same one you've currently got on your phone.
However, I'd start from installing Activity Launcher (download from playstore) and launching com.google.android.setupwizard.SetupWizardTestActivity. It looks like yor phone is in setup mode for some reason, just like it is when you boot it for the very first time. This activity will take you through the Setup Wizard, hopefully something "clicks" in your system when you finish it and your home button functions, etc. will be restored. If this doesn't work I'd try factory reset before flashing firmware.
Click to expand...
Click to collapse
You were right, it was in setup mode. I was unable to install apps over the Google Play Store so I downloaded the apk of Activity Launcher, enabled "unknown sources" and installed it. I opened the activity you wrote but I got an error, so I opened the com.google.android.setupwizard.SetupExit (not sure if it was the exact name) and it was all normal again.
Polyparadox said:
You were right, it was in setup mode. I was unable to install apps over the Google Play Store so I downloaded the apk of Activity Launcher, enabled "unknown sources" and installed it. I opened the activity you wrote but I got an error, so I opened the com.google.android.setupwizard.SetupExit (not sure if it was the exact name) and it was all normal again.
Click to expand...
Click to collapse
Nice, seems like it's even easier way. Thanks for the feedback and a good tip.

Phone still saying rooted after putting stock firmware on

So I rooted my phone following information on this site/a video guide from youtube (I dunno if I'm able to post links but I can PM if you need to see what it had me do etc) so I did a fresh root with TWRP, RMM bypass, no-verify encryption, magisk. All worked great the phone was rooted etc, I then stupidly removed google play services to try get an early date APK which caused issues so I thought a wipe with TWRP would fix the issue but the startup wizard wouldn't work, so I then removed startup wizard via TWRP got back into the phone and put the new version of play services on, yet still had issues so I got the default firmware for my model at samsmobile and put it on via odin - all worked great phone booted fine etc but some apps said a boot was detected, so I made sure to go into developer options and make sure the OEM was locked, did a wipe via the default options when holding power>bixy>up however some apps still say the phone is rooted.. I checked with a rootchecker and I pass the safety and it says no boot detected. So I dunno what the problem is? The only thing I did see was when I did the wipe this came up
"remove failed dir '/system/carrier/ATT/priv-app/AttIqi_ATT' (no such file or diectory)
e:[libfs_mgr] is_dt_compatible(): firmware info was not valid: '/proc/device-tree/firmware/android/compatible: no such file or directory"
Really dunno what to do from here.
bump
mrberta said:
So I rooted my phone following information on this site/a video guide from youtube (I dunno if I'm able to post links but I can PM if you need to see what it had me do etc) so I did a fresh root with TWRP, RMM bypass, no-verify encryption, magisk. All worked great the phone was rooted etc, I then stupidly removed google play services to try get an early date APK which caused issues so I thought a wipe with TWRP would fix the issue but the startup wizard wouldn't work, so I then removed startup wizard via TWRP got back into the phone and put the new version of play services on, yet still had issues so I got the default firmware for my model at samsmobile and put it on via odin - all worked great phone booted fine etc but some apps said a boot was detected, so I made sure to go into developer options and make sure the OEM was locked, did a wipe via the default options when holding power>bixy>up however some apps still say the phone is rooted.. I checked with a rootchecker and I pass the safety and it says no boot detected. So I dunno what the problem is? The only thing I did see was when I did the wipe this came up
"remove failed dir '/system/carrier/ATT/priv-app/AttIqi_ATT' (no such file or diectory)
e:[libfs_mgr] is_dt_compatible(): firmware info was not valid: '/proc/device-tree/firmware/android/compatible: no such file or directory"
Really dunno what to do from here.
Click to expand...
Click to collapse
BUMPITY BUMP BUMP, plz help my fwiend!

Restore FireTabletSettings.apk without adb?

tl;dr -- How do I restore my original FireTabletSettings.apk to /system/priv-app/FireTabletSettings without adb? --or-- How do I enable adb without the settings panel?
Hi all. I'm reaching out to the amazing braintrust here on xda-d in hopes that maybe someone has some guidance. My most recent adventure has been de-amazon-ing my kids new HD10. And for the most part, I have been quite successful thanks to the wealth of knowledge here in this forum. I've managed to get it rooted, de-bloated, replaced the launcher, and even re-enabled a critical feature not found in the Amazon version of Android (screen pinning, essential for 2 year olds!).
But..... (there's always a 'but'..)..... but.. I have discovered I have somehow managed to lock myself out of adb on this particular device. I did search the forum first, finding nothing helpful for this. In order to get screen-pinning back I rolled the dice and used DragonFire1024's rewritten FireTabletSettings.apk, against the recommendation to avoid it with OS versions after 5.6.2.0 (I'm unfortunately running 5.3.7). I accept full responsibility, it was my gamble. The result is screenpinning resurrected (yay!), but also my settings panel is a mine field of broken links. Apparently much has changed in the settings after 5.6.2. Including how they refer to adb. So tapping on the enable box for USB debugging (here called 'enable adb') crashes the settings panel.
The situation is far from hopeless though, because I am rooted, and I had backed up the original FireTabletSettings.apk to the downloads folder on the tablet. However, when I try to copy it to the /system/priv-app/FireTabletSettings folder, CX tells me it's read-only and can't copy it over. I have it in root mode, and even tried enabling adbd insecure for good measure. But no joy. I do not currently have a recovery (twrp or other) installed.
So I need guidance on how to either enable write permissions (temporarily) on the settings folder or on how to install a recovery, all without adb. Or if there's some backdoor way to enable adb, that would work too.
Thanks for any advice.
UPDATE: Hey friends, I just wanted to update this thread with my progress (albeit negative progress, unfortunately). It seems my gamble with this ill-advised mod has failed pretty hard. I'm updating as a cautionary tale to others considering modding their settings file outside the recommended OS versions. I can say pretty confidently: DON'T DO IT.
EDIT: After initially getting stuck after a hard reset, I was able to manually flash an Amazon rom using adb sideload. This did the trick. It is now full factory stock, including the settings panel. I have to do everything over again (except messing with the settings panel), but I have control of my tablet again. The moral of the story is, unless your os version is supported, don't mess with the settings panel. It will rob hours of your life you'll never get back.

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