Develop Bugs

Help a novice please - have ROOTED Samsung Galaxy Tab Pro 8.4 (SM-T320) - Update?

I just received a used Samsung Galaxy Tab Pro 8.4 (SM-T320) - and discovered (not known to me before purchase) it is Rooted.
When I went to do an Update via standard Settings>about Device - it refused returning tablet modified.
also it had the App SuperSU (free) installed) which asked about permission on a couple of Apps I used.
I have absolutely no experience of Rooted tablets,
and currently have no idea how the tablet was rooted, and what with.
So I am seeking your patience and some advice about this, please.
Is there a way to return to the Stock installation?
If so, how to I check that this is possible?
Or should I keep the Root?
If so, how do I update the tablet?
eg: how do I check what, or if any, custom ROM has been installed?
or
which custom ROM do people advise I install?
Thanks for any advice.
Vincent

Just back up your valuable data and storage contents and flash stock via Odin. And I believe at this time point the updates are not of much importance, so if you're on KitKat you might as well ignore that if you can't spare time for backups.
Sent from Google Nexus 6P @ CM13
[WARNING: XDA One have not implemented "mark forum as read" - do not use]

AndyYan said:
Just back up your valuable data and storage contents and flash stock via Odin. And I believe at this time point the updates are not of much importance, so if you're on KitKat you might as well ignore that if you can't spare time for backups.
Thanks for the reply.
Funny that was starting to be my take too.
Either leave it rooted as is - since it really is just KitKat 4.4.2 - but with more ability.
Or later when the spirit moves perhaps upgrade via a custom rom.
Thank you.
Vincent
Click to expand...
Click to collapse
Click to expand...
Click to collapse

@vincent. I have the same tablet as you and I prefer to run the latest OS which is Marshmallow. As you state you are already rooted so you might as well try out a custom ROM. I recommend Resurrection Remix ROM by Vasumit and the XDA thread can be found here. Latest update to ROM is here. You will also need to install gapps. I recommend Banks Dynamic Gapps 6.X.X found here. Give it a try, I'm sure you will like it. ROM is buttery smooth and Vasumit updates it often. :good::good:

DowntownRDB said:
@vincent. I have the same tablet as you and I prefer to run the latest OS which is Marshmallow. As you state you are already rooted so you might as well try out a custom ROM. I recommend Resurrection Remix ROM by Vasumit and the XDA thread can be found here. Latest update to ROM is here. You will also need to install gapps. I recommend Banks Dynamic Gapps 6.X.X found here. Give it a try, I'm sure you will like it. ROM is buttery smooth and Vasumit updates it often. :good::good:
Click to expand...
Click to collapse
DowntownRDB
Thank you so much for your encouragement and suggestion.
Even though I have used Android on tablets and phones for years -
I am still a n00b when it comes to Root and Custom ROMs
I have heard of the more famous ROMs like CyanogenMod etc -
what makes Resurrection Remix ROM by Vasumit better than CyanogenMod
in terms of features and/or support please?
How easy (or not) are custom ROMs to undo?
Many thanks,

UnknownVT said:
I have heard of the more famous ROMs like CyanogenMod etc -
what makes Resurrection Remix ROM by Vasumit better than CyanogenMod
in terms of features and/or support please?
Click to expand...
Click to collapse
Personal opinion below: most AOSP-based ROMs have equal or slightly better support than CM because the team behind them is much smaller, but they might die out one day because of the same reason. CM maintains a huge number of devices and is the basis of many, so it's not likely to disappear soon. Also, CM is usually among the quickest to get to a new Android version while others usually sync from CM and start from there.
As of features, others are guaranteed to have more than CM. CM doesn't like adding features these days.
How easy (or not) are custom ROMs to undo?
Click to expand...
Click to collapse
Do: Flash TWRP, make a full backup of your stock ROM, full wipe and flash the new one.
Undo: Full wipe and restore the old backup, or if you decide you don't want your data, use Odin.
Sent from Google Nexus 6P @ CM13
[WARNING: XDA One have not implemented "mark forum as read" - do not use]

AndyYan said:
Personal opinion below: most AOSP-based ROMs have equal or slightly better support than CM because the team behind them is much smaller, but they might die out one day because of the same reason. CM maintains a huge number of devices and is the basis of many, so it's not likely to disappear soon. Also, CM is usually among the quickest to get to a new Android version while others usually sync from CM and start from there.
As of features, others are guaranteed to have more than CM. CM doesn't like adding features these days.
Do: Flash TWRP, make a full backup of your stock ROM, full wipe and flash the new one.
Undo: Full wipe and restore the old backup, or if you decide you don't want your data, use Odin.
Click to expand...
Click to collapse
Thank you very much for the very helpful reply -
this was about as good as I was hoping for -
really appreciate all the help I am getting here, thank you.
It will take a bit of time for me to get my head around the information - as it is all new to me -
and I want to proceed with care/caution so I don't end up bricking my tablet.
Gratefully and thanks,

UnknownVT said:
Thank you very much for the very helpful reply -
this was about as good as I was hoping for -
really appreciate all the help I am getting here, thank you.
It will take a bit of time for me to get my head around the information - as it is all new to me -
and I want to proceed with care/caution so I don't end up bricking my tablet.
Gratefully and thanks,
Click to expand...
Click to collapse
Hey!
you could look at it this way, most of the people here have a hard time just ulocking the device and rooting it, not that yours is already done, might as well right. along with the proper research, your device could be one hundred times better, the stock OS of the tablet isn't that good (lets face it.) and with the current technology, it will have a hard time keeping up because the OS for this device is not that efficient (personal opinion). Anyways, it's still up to you to do it or not. Cyanogenmod has released the nightly version of Marshmallow 6.0 for this device. maybe you could check it out!! ^_^

kurogane_tw said:
Hey!
you could look at it this way, most of the people here have a hard time just ulocking the device and rooting it, not that yours is already done, might as well right. along with the proper research, your device could be one hundred times better, the stock OS of the tablet isn't that good (lets face it.) and with the current technology, it will have a hard time keeping up because the OS for this device is not that efficient (personal opinion). Anyways, it's still up to you to do it or not. Cyanogenmod has released the nightly version of Marshmallow 6.0 for this device. maybe you could check it out!! ^_^
Click to expand...
Click to collapse
Yes, thanks for the encouragement.
Seems ironic that I had done lots of look-sees (not quite research, but close) about rooting devices - and I actually now have one
(it was just unexpected on this Samsung Galaxy Tab Pro 8.4 (SM-T320)).
As you see I've decided to keep it rooted and am actively looking at which ROM to flash -
currently I am leaning toward the more conservative approach of doing the CM (CyanogenMod)
and rather than deciding between the snapshot CM-12.1 or the nightly CM-13.0....
perhaps I should just wait for a snapshot CM-13.0
(" and we’ll have a quality approved SNAPSHOT for CM13 sometime Jan." of course it is now Feb - so maybe soon?)
Thanks,

UnknownVT said:
perhaps I should just wait for a snapshot CM-13.0
(" and we’ll have a quality approved SNAPSHOT for CM13 sometime Jan." of course it is now Feb - so maybe soon?)
Click to expand...
Click to collapse
Don't wait for snapshots - they are just forked from nightlies at a certain timepoint and aren't more stable than nightlies. Just backup and flash a nightly, and if anything you feel unstable, restore the backup and/or wait for that to get resolved. I personally don't see anything disturbing aside from wonky external SD support (which is a universal bug across all 6.0+ ROMs).
P.S. The "Thanks" button is there - use it
Sent from Google Nexus 6P @ CM13
[WARNING: XDA One have not implemented "mark forum as read" - do not use]

AndyYan said:
Don't wait for snapshots - they are just forked from nightlies at a certain timepoint and aren't more stable than nightlies. Just backup and flash a nightly, and if anything you feel unstable, restore the backup and/or wait for that to get resolved. I personally don't see anything disturbing aside from wonky external SD support (which is a universal bug across all 6.0+ ROMs).
Click to expand...
Click to collapse
Thanks again, and thanks for pointing out the ext SD card issue with 6.0+ ROMs
Does this work?
How to Use SD Card as Internal Storage on Marshmallow ...
Thanks.

UnknownVT said:
Thanks again, and thanks for pointing out the ext SD card issue with 6.0+ ROMs
Does this work?
How to Use SD Card as Internal Storage on Marshmallow ...
Thanks.
Click to expand...
Click to collapse
The issue is mainly with how to use SD card as external storage (as on older Android versions), not with the new "adoptable storage" feature. That we don't have a definitive solution yet.
You might want to read through the last pages of the CM13 discussion thread in Development subforum if you're determined to get it working.
Sent from Google Nexus 6P @ CM13
[WARNING: XDA One have not implemented "mark forum as read" - do not use]

Recommend a not laggy ROM for HTC One M8 Harman/Kardon edition

Hello, I want to switch my phones OS from ViperOneM8 to a Nougat ROM, but i had a bad experience previous months with it. As i searched, I've found Ressurection Remix and Xeno HD, both of them running on Android N, but they were laggy and had issues with the SD Card - It was instantly injected and ejected. And i want to know, if there are some decent Android N ROMs for this model of One M8, or maybe the previous roms which I talked about have got better and thes issues diaspeared?

LineageOS seems to be the best IMHO.

Jw 5.4

xsteven77x said:
LineageOS seems to be the best IMHO.
Click to expand...
Click to collapse
I know, and i can say more, i've tried also Lineage , but it was the most laggy os between all the nougat os for m8 =/

Callliope said:
Jw 5.4
Click to expand...
Click to collapse
is it S.Team M8 or this is another ROM ?

Wi-f said:
I know, and i can say more, i've tried also Lineage , but it was the most laggy os between all the nougat os for m8 =/
Click to expand...
Click to collapse
That's interesting. I have also test drove all the latest current Ron's we have and it ended up being the best with my setup.
As we all know, performance is going to vary widely depending on what apps you have installed etc etc, so I'm telling you this for no other reason than to say that it's not junk across the board at least for me. It may have to do with your setup because the ROM itself out performs the others in my situation. Good luck and take care!!

xsteven77x said:
That's interesting. I have also test drove all the latest current Ron's we have and it ended up being the best with my setup.
As we all know, performance is going to vary widely depending on what apps you have installed etc etc, so I'm telling you this for no other reason than to say that it's not junk across the board at least for me. It may have to do with your setup because the ROM itself out performs the others in my situation. Good luck and take care!!
Click to expand...
Click to collapse
Ok I'll try it one more time , but it can also be the problem that, maybe they do the custom rom only for original m8 not also H/K version. I know that it is a nonsense, but maybe. BTW what should I install Nightly or regular version, and should I get GAPPS or there are already installed GAPPS ?

I have installed Ressurection Remix 5.8.5, and i managed to run it well, but i have a little problem , apps which need internet connection crash after a little time from starting them. /they seem to start, showing a black screen, after what the system returns a message where is written that the app is not responding. whta can be done?

Resurrection Remix has no lagging problems

Need advice : Nougat or remain 6.0.1

I am using Galaxy Tab S SM-T700. Just checked and I am on 6.0.1. Would I get more speed/battery efficiency if I were to flash to nougat? I am using this tablet mainly for surfing/navigating/ebooks and watching videos, not so much on gaming. Can someone recommend any good stable release of nougat for me to flash as well? Thanks in advance!

You can give the LineageOS 14 a try now that there is an official T700 version. It's not like you have to lose anything. Just install TWRP, backup your current ROM to SD card and then flash the LineageOS and a gapps zip. If you don't like it, you can always restore the Marshmallow ROM with your data.
I don't have experience with LineageOS on the Tab S (it has ok battery life running 6.0.1, now that I disabled most standby processing unless it's plugged into charger), but the Oneplus One port of LineageOS is fast and good enough to be my daily ROM on that phone. OPO had the same problem since Marshmallow was their final release. If you're running out of storage space, perhaps LineageOS will help because its /system partition on my phone is something like 1.2GB, which is 1GB smaller than the Touchwiz /system on the tablet. On the downside, some ecommerce and streaming apps will stop working on LineageOS. Netflix no longer shows up in the play store but you can download the apk manually while Uverse app stops working flat out.

pangxs86 said:
I am using Galaxy Tab S SM-T700. Just checked and I am on 6.0.1. Would I get more speed/battery efficiency if I were to flash to nougat? I am using this tablet mainly for surfing/navigating/ebooks and watching videos, not so much on gaming. Can someone recommend any good stable release of nougat for me to flash as well? Thanks in advance!
Click to expand...
Click to collapse
After a few months with Lineage 14, I just went back to stock MM on my T800. Everything is running smoothly, and unless something really great and stable comes along, I'll probably stay stock with root and TWRP. The only real advantage for me on Lineage was less memory used. By not re-installing loads of apps that I really wasn't using, leaves me with enough memory that will suffice. I use package disabler pro to stop bloat running. I've had this tablet for over 3 years, put in a new battery this year and I'm OK with MM until I retire it.
Sent from my SM-T800 using XDA-Developers Legacy app

linage builds have no fingerprint scanner, if that's important to you.
On most devices aosp/cm is a definate step up, on the tab s maybe not so cut and dried. Devs have to deal with so much crud introduced by Samsung , its a wonder that custom firmware exists for Samsung devices at all, hence there will always be some bugs.
The best in my opinion for this device is a stripped stock MM ( Fenris for me) , which I have been running for a while.

Recommended ROM to speed up my N7

I've loved my N7 2013 since I got it when it came out. It used to be unbelievably snappy, but at some point an OTA made it slow, then the next one even slower. I realised that the Facebook app kills the device so I took that off. Then I rooted the device and did a factory reset. It is less sluggish, but still a bit too slow for me.
If 6.0.1 stock, which I am running right now, is the culprit, which older stock should I go back to? I'd like to strike a balance between speed and going so far back in versions that the security risks and other trade-offs are too great.
I am prepared to also try a custom ROM but I would prefer using my tablet over fiddling with it so I'd like some advice as to which ROM (stock or otherwise) is most likely to speed up my beloved N7.

I highly recommend LineageOS 14.1. (Nougat) It was the last official version for N7 by LineageOS. Everything works on 14.1.... and it is super stable.
wileyc has an unofficial version of it. He is leaving the original build unchanged but is creating security updates almost weekly. Here is the link to his posting:
https://forum.xda-developers.com/ne...m-lineageos-14-1-weekly-builds-nexus-t3968502
or you can go right to his builds:
https://lineageos.disavowed.jp/flo/

TamD said:
I highly recommend LineageOS 14.1. (Nougat) It was the last official version for N7 by LineageOS. Everything works on 14.1.... and it is super stable.
wileyc has an unofficial version of it. He is leaving the original build unchanged but is creating security updates almost weekly. Here is the link to his posting:
https://forum.xda-developers.com/ne...m-lineageos-14-1-weekly-builds-nexus-t3968502
or you can go right to his builds:
https://lineageos.disavowed.jp/flo/
Click to expand...
Click to collapse
Thanks Tam, looks like a good contender. If one wants to regularly flash these updates for security, am I right in saying that each time the device is wiped, or can you avoid losing your configuration and apps? Is there a clever way to avoid a lot of hassle with backup/restore and reconfiguring your device each time?

LeifGR said:
Thanks Tam, looks like a good contender. If one wants to regularly flash these updates for security, am I right in saying that each time the device is wiped, or can you avoid losing your configuration and apps? Is there a clever way to avoid a lot of hassle with backup/restore and reconfiguring your device each time?
Click to expand...
Click to collapse
Edit. Hi Lief, I mis-advised (hazzards of being a noob giving advice). You will actually have to do a clean install of lineage 14.1. Meaning that you will have to reinstall all of your apps and settings.... On a plus side there is virtually no bloat in Lineage 14.1, and there is something to be said for how well your N7 will run with a fresh install.
Sorry for the misinformation
Leif, You are correct. Nothing changes with your apps or configuration.
Just download the update/latest build to your device and install with TWRP. VOILA! Done. Pretty hassle free.

TamD said:
Leif, You are correct. Nothing changes with your apps or configuration.
Just download the update/latest build to your device and install with TWRP. VOILA! Done. Pretty hassle free.
Click to expand...
Click to collapse
Does anyone know if the 14.1 build supports HDMI via Slimport like stock does?

LeifGR said:
Does anyone know if the 14.1 build supports HDMI via Slimport like stock does?
Click to expand...
Click to collapse
I can confirm that the answer is yes - LineageOS 14.1 on deb (LTE) does support video out via the USB port and a Slimport adapter.

TamD said:
I highly recommend LineageOS 14.1. (Nougat) It was the last official version for N7 by LineageOS. Everything works on 14.1.... and it is super stable.
wileyc has an unofficial version of it. He is leaving the original build unchanged but is creating security updates almost weekly. Here is the link to his posting:
https://forum.xda-developers.com/ne...m-lineageos-14-1-weekly-builds-nexus-t3968502
or you can go right to his builds:
https://lineageos.disavowed.jp/flo/
Click to expand...
Click to collapse
Is there a similarly updated build for the LTE version?
Edit: NM, found the deb builds by replacing "flo" with "deb"!

Hi guys
Has someone tried to compare 14.1 and 17.1 performance?
I have installed 14.1 It looks great and just wondering how is the 17.1 fly on it?
thx

Lineage OS 14.1 vs 17.1 (Flo)
Hi guys,
I'm on lineage os 17.1 , Nexus 7 2013 Flo (32gb) , I remember having issues with bluetooth on 14.1 ( sisaxis controller ) and that's why I upgraded to 17.1.
It's a little bit laggy but nothing serious.
Hope that Can help.

Is there more ROMs?

I recently purchased an tab S4 just an update from my previous Samsung tablet. I was wondering is there more ROMs for this tablet or ROMs currently in development? I noticed theres like 2 ROMs for this tablet. I have a note 8 and I'm currently running deluxerom on and it, and I really enjoy the tweaks and customization I'm able to do. I was looking for a same kind of feature for my tablet. Would greatly appreciate the answers I'm looking for. Thanks!

Mkami said:
I recently purchased an tab S4 just an update from my previous Samsung tablet. I was wondering is there more ROMs for this tablet or ROMs currently in development? I noticed theres like 2 ROMs for this tablet. I have a note 8 and I'm currently running deluxerom on and it, and I really enjoy the tweaks and customization I'm able to do. I was looking for a same kind of feature for my tablet. Would greatly appreciate the answers I'm looking for. Thanks!
Click to expand...
Click to collapse
Pretty much zero support. You can get a few 9.0 GSI ROMs to boot, but they all have issues. Mine has been sitting around since it was purchased while still using my old 2014 model.

veekay said:
Pretty much zero support. You can get a few 9.0 GSI ROMs to boot, but they all have issues. Mine has been sitting around since it was purchased while still using my old 2014 model.
Click to expand...
Click to collapse
Aww no way!? Really? I excitingly got this tablet cause of the features and thought perhaps there would be amazing ROMs for this particular tablet, but I guess not xD What are GSI ROMs? Also as a desperate attempt would other tablet ROMs work on this s4? Thanks mate!

Mkami said:
Aww no way!? Really? I excitingly got this tablet cause of the features and thought perhaps there would be amazing ROMs for this particular tablet, but I guess not xD What are GSI ROMs? Also as a desperate attempt would other tablet ROMs work on this s4? Thanks mate!
Click to expand...
Click to collapse
I had thought the same thing, but it seems the S3 is the last tablet to get real support.
https://forum.xda-developers.com/project-treble/trebleenabled-device-development
Some of the ones for 9 will work, but most features won't work too well, if at all.
You might be able to get another rom to work, I know I had no luck. Even trying ones with similar hardware, they all failed to even flash since the booting numbers are different.
Kind of have to be satisfied with Samsung, half baked custom roms or sell the thing.

Mkami said:
Aww no way!? Really? I excitingly got this tablet cause of the features and thought perhaps there would be amazing ROMs for this particular tablet, but I guess not xD What are GSI ROMs? Also as a desperate attempt would other tablet ROMs work on this s4? Thanks mate!
Click to expand...
Click to collapse
First,download "Treble Check" app from playstore & read for your device...
https://www.xda-developers.com/flash-generic-system-image-project-treble-device/
(Some GSIs roms are not compatible with some devices!)

veekay said:
I had thought the same thing, but it seems the S3 is the last tablet to get real support.
https://forum.xda-developers.com/project-treble/trebleenabled-device-development
Some of the ones for 9 will work, but most features won't work too well, if at all.
You might be able to get another rom to work, I know I had no luck. Even trying ones with similar hardware, they all failed to even flash since the booting numbers are different.
Kind of have to be satisfied with Samsung, half baked custom roms or sell the thing.
Click to expand...
Click to collapse
Hey Veekay I tried it and you're right unfortunately I came across the same issue as you brother
Now I'm stuck and I need help sorting my device out, was wondering if you knew this issue or could help?
When I got the stock firmware back and then when I flash TWRP with odin after going into TWRP I get 0mb as internal
so when I format and then go back into my load up the screen after SAMSUNG says "verification failed" and then reset
on the bottom. I tried other options as well. Without even wiping on TWRP the devices boots up into the setup wizard for the firmware fine
but after I wipe TWRP so I can get access to my internal drive my samsung boots into that verification reset screen. Got any clue as to how I can
resolve this issue? Thanks a bunch!

daitalos said:
First,download "Treble Check" app from playstore & read for your device...
https://www.xda-developers.com/flash-generic-system-image-project-treble-device/
(Some GSIs roms are not compatible with some devices!)
Click to expand...
Click to collapse
Hey! Thanks for your reply, will this work for PIE? I can't downgrade from PIE to OREO
and I don't know if GSI even works properly on my device

Mkami said:
Hey Veekay I tried it and you're right unfortunately I came across the same issue as you brother
Now I'm stuck and I need help sorting my device out, was wondering if you knew this issue or could help?
When I got the stock firmware back and then when I flash TWRP with odin after going into TWRP I get 0mb as internal
so when I format and then go back into my load up the screen after SAMSUNG says "verification failed" and then reset
on the bottom. I tried other options as well. Without even wiping on TWRP the devices boots up into the setup wizard for the firmware fine
but after I wipe TWRP so I can get access to my internal drive my samsung boots into that verification reset screen. Got any clue as to how I can
resolve this issue? Thanks a bunch!
Click to expand...
Click to collapse
Have you tried just reloading the latest stock firmware from scratch?

Yup, its unfortunate that there isn't much community support for this device. The Tab S4 is Project Treble supported and a few GSI ROMS do work. But as others have said they are unstable and not for use as a daily driver. We have a few discussion threads here talking about them.

veekay said:
Have you tried just reloading the latest stock firmware from scratch?
Click to expand...
Click to collapse
Would that work? If I did that I would still be able to download and install TWRP and have a root? Because of it being PIE

UndeadAnarchy said:
Yup, its unfortunate that there isn't much community support for this device. The Tab S4 is Project Treble supported and a few GSI ROMS do work. But as others have said they are unstable and not for use as a daily driver. We have a few discussion threads here talking about them.
Click to expand...
Click to collapse
I am going to do more research on these projects because I really wish there was more ROMs its quite an amazing tablet but the potential with the stock ROM lacks a lot

Mkami said:
Hey! Thanks for your reply, will this work for PIE? I can't downgrade from PIE to OREO
and I don't know if GSI even works properly on my device
Click to expand...
Click to collapse
Generic System Image (GSI) list :
https://github.com/phhusson/treble_experimentations/wiki/Generic-System-Image-(GSI)-list
you can try only "Android 9 Pie" official or unofficial gsi roms..
and remember ! Some GSIs roms maybe are not compatible with some devices! you can ask for your device on each thread
(for example look here): https://github.com/phhusson/treble_experimentations/issues/777
(usually this Gsi aosp 9 phh, generally works on most devices...BUT! ask first,and discuss it in the thread)
https://forum.xda-developers.com/pr...vice-development/aosp-9-0-phh-treble-t3831915

daitalos said:
Generic System Image (GSI) list :
https://github.com/phhusson/treble_experimentations/wiki/Generic-System-Image-(GSI)-list
you can try only "Android 9 Pie" official or unofficial gsi roms..
and remember ! Some GSIs roms maybe are not compatible with some devices! you can ask for your device on each thread
(for example look here): https://github.com/phhusson/treble_experimentations/issues/777
(usually this Gsi aosp 9 phh, generally works on most devices...BUT! ask first,and discuss it in the thread)
https://forum.xda-developers.com/pr...vice-development/aosp-9-0-phh-treble-t3831915
Click to expand...
Click to collapse
Can I do this without stock ROM and only TWRP? Because having the stock ROM is disabling my twrp to function without wiping and if I wipe than my stock ROM doesn't work
Thanks!

Mkami said:
Can I do this without stock ROM and only TWRP? Because having the stock ROM is disabling my twrp to function without wiping and if I wipe than my stock ROM doesn't work
Thanks!
Click to expand...
Click to collapse
Sorry,but I don't understand what do you mean " without stock rom and only twrp"...
you can install a Gsi rom, with two ways
Via TWRP, or Via Fastboot : https://www.xda-developers.com/flash-generic-system-image-project-treble-device/ (Tab S4 is a-only arm64)
for any other question, it is better to ask in the thread : https://forum.xda-developers.com/pr...vice-development/aosp-9-0-phh-treble-t3831915
(read carefully in OP & you can post,every single question there for your device,and you will get certainly help from the developer or from any other user..)

Mkami said:
Can I do this without stock ROM and only TWRP? Because having the stock ROM is disabling my twrp to function without wiping and if I wipe than my stock ROM doesn't work
Thanks!
Click to expand...
Click to collapse
You are going to have to just wipe it and start over from square one, unless you made a TWRP backup before starting all of this.
Download and flash the latest stock rom from recovery and then you can load twrp again.

I was looking at the possibility of using GSI's on some devices, and while they can offer new life to older devices, they're not entirely stable all the time unless you're willing to make your own changes. I know Lineage has made some excellent progress, but it's not fullproof yet and I wouldn't try it unless you're willing to not use your device as a daily use device.
I had an extra T-Mobile Revvlry which is basically a rebranded Moto g7 Play that I installed the Lineage GSI image and it works fairly well. However, this is more the exception to the rule and Moto devices, I feel, are far simpler in design vs certain Samsung devices. It also had a ton of trial and error involved for me to get it up and running properly.

Is it possible as the s4 becomes older, more people buy it and Samsung stops releasing official updates that someone will come along and create a ROM for it? Or is it more like Samsung locked the bootloaders and its close to impossible to write a ROM for it? Is it still possible to root the s4?

slipnslider said:
Is it possible as the s4 becomes older, more people buy it and Samsung stops releasing official updates that someone will come along and create a ROM for it? Or is it more like Samsung locked the bootloaders and its close to impossible to write a ROM for it? Is it still possible to root the s4?
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Read very carefully without rush ! for " WETA Kernel + Encryption disabler " etc
especially, read the user comments carefully, and ask on the thread for any questions you have..
https://forum.xda-developers.com/galaxy-tab-s4/development/recovery-twrp-3-3-0-sm-t83x-t3928278 (Pie version)
https://forum.xda-developers.com/showpost.php?p=79483624&postcount=2
https://forum.xda-developers.com/galaxy-tab-s4/how-to/guide-sm-t83x-twrp-magisk-t4059227
( Newest Odin v3.14.4 is there : https://dl2018.sammobile.com/Odin3-v3.14.4.zip )

Thanks. I took a quick peak at the roms and kernels in the roms and kernels forum and they are pretty much all abandoned.
Someone did mention that the LOS 16.0 and ArrowOS GSI's work alright but are a bit buggy.

slipnslider said:
Thanks. I took a quick peak at the roms and kernels in the roms and kernels forum and they are pretty much all abandoned.
Someone did mention that the LOS 16.0 and ArrowOS GSI's work alright but are a bit buggy.
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samsung,maybe at the end of july to give the upgrade to android 10....it is very likely to happen I think
yes,all Gsi Roms still have various problems unfortunately...
my opinion is: stay to stock rom for now....you can "uninstall" many applications if you want & without root, via "samsung package disabler"(paid) from playstore, or with this way:
https://beebom.com/how-remove-bloatware-android-without-root/
also,you can Install "NiceLock Downloader Companion App" ,to add some features on your device : https://forum.xda-developers.com/galaxy-note-9/themes/nicelock-module-download-links-module-t3923844
with this way I operate my device until now..