Would a custom kernel (looking at superkernel) work on a stock but rooted firmware? - Samsung Galaxy S7 Questions and Answers

I took a break but Ive been playing around with trying to downgrade my s7 to marshmallow, despite the bootloader not letting you. I can get everything to work, except for vibration... it does a quiet beep instead. but haptic feedback is a must for me, as well as ringtone and vibrate mode
But i just wondered, if anyone has tried using this, or another recommended custom kernel, to enable full function of marshmallow samsung stock rom? did you experience any negative side effects from doing so?
Im not new to rooting but fairly new to understanding how firmware and samsungs new bootloader lockdown works... (unlocked should mean you can install whichever firmware youd like as long as its for your specific device, but thats a whole other rant...)
I enjoy the look of touchwiz and really enjoy the samsung themes, so I dont want to go pure stock at all... but if this is possible/works it may be the perfect middle ground.
Thanks
Ive tried playing with editing the stock nougat kernel into the stock marshmallow rom, but none of my PCs support virtualization, which is required to run linux in an emulator in order to finally truly see whats inside of those .img files... this is a dead end approach for me short of buying a new PC which isnt going to happen anytime soon.

Pawprints1986 said:
I took a break but Ive been playing around with trying to downgrade my s7 to marshmallow, despite the bootloader not letting you. I can get everything to work, except for vibration... it does a quiet beep instead. but haptic feedback is a must for me, as well as ringtone and vibrate mode
But i just wondered, if anyone has tried using this, or another recommended custom kernel, to enable full function of marshmallow samsung stock rom? did you experience any negative side effects from doing so?
Im not new to rooting but fairly new to understanding how firmware and samsungs new bootloader lockdown works... (unlocked should mean you can install whichever firmware youd like as long as its for your specific device, but thats a whole other rant...)
I enjoy the look of touchwiz and really enjoy the samsung themes, so I dont want to go pure stock at all... but if this is possible/works it may be the perfect middle ground.
Thanks
Ive tried playing with editing the stock nougat kernel into the stock marshmallow rom, but none of my PCs support virtualization, which is required to run linux in an emulator in order to finally truly see whats inside of those .img files... this is a dead end approach for me short of buying a new PC which isnt going to happen anytime soon.
Click to expand...
Click to collapse
You can flash any kernal to a rooted device as long as that kernal is for the exact same device and firmware. Flash via Odin, make a complete back up before, if it all goes wrong, flash the back up.

Related

Help choosing ROM and Recovery

Hi everyone.
I rooted my Note Pro 12.2 (wifi) a while back and installed a basic rooted ROM, not CW12.
I honestly don't remember which ROM I flashed. I believe it was just a stock de-bloated ROM, and if it's the one I think it is, in the thread it says that ROM was faulty and dev has stopped for it. I see the kernel version and build in the "about" section under settings but I'm not sure if that number would tell me which ROM it is, or just the ROM and kernal that it was built on top of.
I basically wanted a stock style ROM with the ability to change things as I wanted. I'm still noticing a TON of lag. Scrolling on pages, loading apps, screen lag between touch and actual input of characters when using on screen keyboard, etc etc. I've frozen a bunch of bloatware and other things and it helped a little, but it's still pretty bad.
Audio latency with recording and MIDI apps is very bad, but I know that's improved with lollipop.
Aside from lag, it seems that GPS won't lock on no matter how long Iet it look for a signal (hard to tell if it's the ROM, but my Note 4 has found GPS very easily). Also, my Note 4 (unrooted and stock at this point) is waaaaay smoother and faster than this tablet. I realize we're talking about lollipop vs kitkat, and that the Note 4 version I have is the snapdragon one. But it still seems like performance should be better on this tablet.
So I'm wondering if anyone can suggest a good ROM for me to flash until lollipop comes out for the wifi version of this tablet. I want the stock multi-window functions (4 at a time plus floating windows), so CW12 is not an option. I want to use some of the Samsung apps like s note and Hancom office. I use the s-pen from time to time with the pen apps like write-on-screen.
The "rooted" features I want to access are turning off the camera sound (adding the switch to the settings menu in the camera app, not just replacing the sound file with a dummy file) Changing PPI of apps (xposed module) and full access read/write on micro SD cards and really important is the ability to add any app to the multi-window apps list and force orientation. I've been able to do all this with xposed modules.
Other than that, stock would be fine if it wasn't so laggy. The main reason I want to try another ROM is the lag. On screen keyboard has a lot of lag, but even my Logitech k810 bluetooth keyboard is laggy.
I'm also currently travelling and don't have a PC with me. So I'm hoping I can flash the ROM without ODIN, or perhaps I can use one of the ODIN-for-android type things on my Note 4 to flash a ROM to the Note Pro 12.2. Also I have the stock recovey, and would like suggestions on which recovery to use instead. Again, no computer with me to flash a new recovery. Ido have an OTG cable and USB flash drive so Ican back up my files before flashing the new ROM, as well as a miscro SD card.
Any recommendations for a smooth, fast ROM? Any tips on flashing it without a PC? I know I can copy the ZIP to the tablet and flash it from recovery...but it is the stock recovery...is this going to be sufficient?
THANKS!
The hyperdrive rom by sbreen (in the dev section) works great. Isnt there an internet cafe in the vicinity? Ask them for assistance flashing the beast. I love twrp. Good luck!
I tried to find an easy root apk thingy so you dont need a computer, couldnt find anything (but maybe kinguser or something like it will work)
Link to twrp with explanation
https://twrp.me/devices/samsunggalaxynotepro122exynoswifi.html
Thanks! TWRP is I think what's on my Note II back home. My tablet is rooted already of course. For the Hyperdrive ROM, one thing I'm a little confused about is if I have to FIRST install a stock ROM and THEN flash the custom ROM. I'm a little confused about why exactly but I see that in the forums from time to time. It's recommended for certain ROMs. I don't know if flashing the stock ROM updates some other firmware/hardware driver type stuff that's needed for the new kernal to work or what.
There might be an internet cafe. I'm flying from Vienna to Lithuania today. Trying to explain to them that I want them to download and install ODIN might be tough knowing only English and Spanish haha.
Sorry for the noob question but is clicking the thumbs-up icon what generates "thanks" or do I do that somewhere else?
spaceturd3000 said:
Thanks! TWRP is I think what's on my Note II back home. My tablet is rooted already of course. For the Hyperdrive ROM, one thing I'm a little confused about is if I have to FIRST install a stock ROM and THEN flash the custom ROM. I'm a little confused about why exactly but I see that in the forums from time to time. It's recommended for certain ROMs. I don't know if flashing the stock ROM updates some other firmware/hardware driver type stuff that's needed for the new kernal to work or what.
There might be an internet cafe. I'm flying from Vienna to Lithuania today. Trying to explain to them that I want them to download and install ODIN might be tough knowing only English and Spanish haha.
Sorry for the noob question but is clicking the thumbs-up icon what generates "thanks" or do I do that somewhere else?
Click to expand...
Click to collapse
If its rooted you can install twrp without computer (see my link) use twrp manager fromthe play store for that
You only have to flash the custom rom
(Make sure you backup on an ext sd or something, then delete everything in twrp, install custom rom, restart and done) I also always backup the launcher settings, if you backup the apps with titanium restoring is very easy afterwards)
Lemme know if this works for you!
goenieg said:
If its rooted you can install twrp without computer (see my link) use twrp manager fromthe play store for that
You only have to flash the custom rom
(Make sure you backup on an ext sd or something, then delete everything in twrp, install custom rom, restart and done) I also always backup the launcher settings, if you backup the apps with titanium restoring is very easy afterwards)
Lemme know if this works for you!
Click to expand...
Click to collapse
I'm already having trouble installing TWRP. I can't do it from the app, as my device isn't listed. I downloaded the zip file of the correct version of TWRP and tried to flash it using the stock recovery. But when I boot into recovery mode, it still just goes to the stock recovery. Then I downloaded and installed ROM manager from the play store and it shows TWRP as being installed, but whenever I boot into recovery I just get the stock recovery.
I'm back home now and I guess I'll just try to do all this with ODIN.
Is there any reason I can't just install the custom ROM using the stock recovery? That's what I did last time.
Ok So I got TWRP installed via ODIN then I used it to clean wipe and flash Hyperdrive ROM but gmail app won't even open, just crashes immediately, and it's one of the main apps I need so...probably gonna look for another ROM...or most likely gonna flash the stock ROM, unroot and sell the tablet and get a Dell Venue 11 Pro. Might wait till the end of July though, the supposed release date for lollipop on this device.
Had the same problem. Install hyperdrive without the gmail app option. Afterwards install itmvia the play store.
And if you want lollipop give cyanogen a try. I love it (but its a personal thing).
Ad make sure to read the Venue reviews, they are not very positive.
goenieg said:
Had the same problem. Install hyperdrive without the gmail app option. Afterwards install itmvia the play store.
And if you want lollipop give cyanogen a try. I love it (but its a personal thing).
Ad make sure to read the Venue reviews, they are not very positive.
Click to expand...
Click to collapse
I wanted to try lollipop because I use it for music, and latency is much better with lollipop. My Note 4 is running lollipop and I get way better performance from MIDI keyboards and guitar amp modelling. I really like the multi window functions on the stock and hyperdrive ROMs though, 4 at once, floating, etc. I'm sure as soon as lollipop is officially out for this device, someone will release a rooted version.
Thanks for the tip on gmail, fortunately I read it before getting too deep and just reflashed without gmail it and then installed the gmail app as you suggested and it does work. There still seems to be a bit of delay when using the on screen keyboard, not as fast as I had hoped. But it's up and running.
I was considering the Dell after trying a bunch of different audio and video editing apps for android and realizing that I just need full photoshop, premiere, and Reaper with all my VST plugins, so I need windows. Perhaps Surface Pro is a better choice but I like the Venue's chassis better, fanless, rounded corners. Also new tablets might be coming out with Windows 10 so another reason to wait...
My laptop is great but it's really big and I like a touch interface for on screen mixers and instruments. So I figured a tablet PC might work best for me. But the problem is GUI scaling. with the Windows legacy apps like Premiere and Photoshop, the buttons and menus don't scale, and on an 11" 1080 display they are quite small.
Just wait for win 10 and while waiting fine tune your 12" beast did you try system tuner pro already? You should be able to get less latency from that.
(And did someone mention "buy a Mac" already?
I am surprised, because after testing dozen ROMs I found stock ROM fastest one. Just root and debloat it.
Not so any lag or problems, but with custom ROMS I had a lot of problems.
tin2404 said:
I am surprised, because after testing dozen ROMs I found stock ROM fastest one. Just root and debloat it.
Not so any lag or problems, but with custom ROMS I had a lot of problems.
Click to expand...
Click to collapse
Indeed, cyanogen requires a lot of tuning (but its what I like about Android, I am more tinkering with it than actually using it I believe
goenieg said:
Just wait for win 10 and while waiting fine tune your 12" beast did you try system tuner pro already? You should be able to get less latency from that.
(And did someone mention "buy a Mac" already?
Click to expand...
Click to collapse
I checked out system tuner pro (didn't buy it yet just read the description) What exactly would I adjust to get lower audio latency? Just clock the CPU higher? OR does it have audio-specific settings not mentioned in the description?
Hold yer horses
http://www.sammobile.com/firmwares/download/49414/P900XXU0BOF2_P900OXA0BOF2_PHN/
Looks like Samsung official lollipop (I read that it has way better latency) is finally coming to your tablet.
---------- Post added at 10:02 PM ---------- Previous post was at 09:51 PM ----------
Better link https://drive.google.com/file/d/0B4ccvyxgge4kaUktYWtPUl9QSW8/view?pli=1
WHAAAAAAAT?!?!?!?!?!!? I've been checking sammobile EVERY day for the lost couple weeks waiting for this! OMG OMG I'm hoping I'll be able to use the Samsung Audio stuff with this, their DAW and amplitube and all that...plus I'll get Hancom office back...Thanks for the heads-up. I'm glad I've been using CM12.1 though So I can compare the experience.
Looking forward to the rooted version of stock lollipop making its way to xda as well! Now... to figure out the best way to back up my current installation...

Samsung Galaxy S4 GT-19505

Hi!
I'm new to this forums. I was led here by the people from another forums (LinusTechTips) since I was asking for help about rooting and modding my Samsung Galaxy S4.
Now, I really don't know anything about rooting or modding, but I just realized that my phone is starting to go slow, and there are some bloatwares I do not really use. I heard that if I root and mod my phone, all the bloatware can be erased and I will be able to have more space in my phone.
Can someone please link me or teach me how to root and mod my Samsung Galaxy S4? I've been reading around, but I am scared that the thread I am following is either out of date, or would not turn out well, so if you do have the time, please do help me!
Thanks!
Yours,
Veridisduo
Hey veris, i have a s4 GT-i9505 and i recently rooted it. First... did you get it by carrier? Just youtube this ( GT-i9505 (LTE, ATNT etc.) Root (Android version) sorry for bad english.
Yours, Jan
Veridisduo said:
Hi!
I'm new to this forums. I was led here by the people from another forums (LinusTechTips) since I was asking for help about rooting and modding my Samsung Galaxy S4.
Now, I really don't know anything about rooting or modding, but I just realized that my phone is starting to go slow, and there are some bloatwares I do not really use. I heard that if I root and mod my phone, all the bloatware can be erased and I will be able to have more space in my phone.
Can someone please link me or teach me how to root and mod my Samsung Galaxy S4? I've been reading around, but I am scared that the thread I am following is either out of date, or would not turn out well, so if you do have the time, please do help me!
Thanks!
Yours,
Veridisduo
Click to expand...
Click to collapse
Easiest way to root your phone is with Chainfire Autoroot.
Deleting system bloatware won't really free up space. The System partition is a set size, so while deleting some apps will free up space in that partition, it won't give you extra space for, say, games or photos or music or other non-system stuff. Any extra space will be minimal anyway. It's also dangerous to do if you don't know what you're doing. Read, read, and read.
If you install custom recovery, such as TWRP (easy to do on this phone after rooting), you can however flash custom ROMs. This includes ROMs like CyanogenMod that are based on stock Android, and also customized Samsung TouchWiz ROMs that have been modified and typically de-bloated like you wish to do with your phone. Omega and Hyperdrive are probably the most popular modified TouchWiz ROMs for the S4. Custom recovery is an essential life-saver for learning about root and ROMs, because it allows you to make an exact backup, so when you screw something up (and you will, we all do, it's all part of the learning process) all you have to do is restore the backup.
There's plenty of youtube videos that'll walk you through the processes, but the best thing to do is read, read, and read. Educate yourself not just so you know what to do, but why you're doing it.
NeoNyte said:
Hey veris, i have a s4 GT-i9505 and i recently rooted it. First... did you get it by carrier? Just youtube this ( GT-i9505 (LTE, ATNT etc.) Root (Android version) sorry for bad english.
Yours, Jan
Click to expand...
Click to collapse
Hi! How would I know what carrier I got it from?
I am from the Philippines and so, I didn't get it from ATNT or whatever carrier you mean. Sorry if I don't get it!
Planterz said:
Easiest way to root your phone is with Chainfire Autoroot.
Deleting system bloatware won't really free up space. The System partition is a set size, so while deleting some apps will free up space in that partition, it won't give you extra space for, say, games or photos or music or other non-system stuff. Any extra space will be minimal anyway. It's also dangerous to do if you don't know what you're doing. Read, read, and read.
If you install custom recovery, such as TWRP (easy to do on this phone after rooting), you can however flash custom ROMs. This includes ROMs like CyanogenMod that are based on stock Android, and also customized Samsung TouchWiz ROMs that have been modified and typically de-bloated like you wish to do with your phone. Omega and Hyperdrive are probably the most popular modified TouchWiz ROMs for the S4. Custom recovery is an essential life-saver for learning about root and ROMs, because it allows you to make an exact backup, so when you screw something up (and you will, we all do, it's all part of the learning process) all you have to do is restore the backup.
There's plenty of youtube videos that'll walk you through the processes, but the best thing to do is read, read, and read. Educate yourself not just so you know what to do, but why you're doing it.
Click to expand...
Click to collapse
Hello!
First of all, I would like to thank you for your lengthy reply about my post. I really appreciate it a lot.
If I use the Chainfire Autoroot, it would do no harm with my files, am I right? (Well, I will of course back it up, but just to make sure!)
Next, what is custom recovery? Should I install this first before doing any mods?
I have heard about CyanogenMod (was thinking of modding my phone to it). What are TouchWiz ROMS though? Oh and other than CyanogenMod, are there any other mods that are nice to try out there? Would be nice to try something nice.
Sorry I ask too much question!
Veridisduo said:
Hello!
First of all, I would like to thank you for your lengthy reply about my post. I really appreciate it a lot.
If I use the Chainfire Autoroot, it would do no harm with my files, am I right? (Well, I will of course back it up, but just to make sure!)
Click to expand...
Click to collapse
It's my understanding that as long as you're not using encryption, your data won't be wiped. But definitely back your stuff up first.
Next, what is custom recovery? Should I install this first before doing any mods?
Click to expand...
Click to collapse
Recovery is sorta like the BIOS menu on a computer. The stock recovery on a Samsung gives you the options reboot, clear your data or cache, or do a factory reset. Custom recoveries allow you to flash things like ROMs, kernels, modem firmwares, as well as do full back-up and restores. The wiping options differentiate between storage and the ROM, so when flashing ROMs, you can choose not to wipe your data (music, pictures, etc). The most popular and easy to use custom recovery is Team Win Recovery Project (TWRP). There's an app you can download from the Play Store that will install it for you (and update) once you're rooted. A custom recovery is an indispensable tool for modding your phone, and fixing it when you screw something up. Read up on TWRP and its capabilities before doing anything drastic with it.
I have heard about CyanogenMod (was thinking of modding my phone to it). What are TouchWiz ROMS though? Oh and other than CyanogenMod, are there any other mods that are nice to try out there? Would be nice to try something nice.
Click to expand...
Click to collapse
CyanogenMod is by far the most popular custom ROM. It's very close to stock (ie: Nexus) Android, with some very useful features added without bogging the phone down with tones of useless crap. Many other custom ROMs borrow from CM, many built upon it and borrow from other custom ROMs. Personally, I think there's better ROMs out there than CyanogenMod, but that's a personal preference, and CM is a good place to start for anybody venturing into custom ROMs.
TouchWiz is what Samsung calls their UI. It'll be the stock ROM on the device. As I mentioned, Omega and Hyperdrive are examples of customized TouchWiz ROMs. They're tweaked for performance, some useless/unwanted features removed (like KNOX), often they port over features from newer or more powerful Samsung devices; it's possible to get features from the Note series and the S5 and S6 on your older S4 this way. They can also add other UI tweaks like expanded reboot menus, audio mods, visual tweaks, etc. The main advantage for using a customized TouchWiz ROM is that it'll be familiar, yet greatly improved.
Apart from that, custom kernels are fun to play with too. I use Koontz kernel on my S4. The kernel, simplistically put, is a bit of software that tells the operating system (ROM) how to use the hardware. This includes everything from the screen and buttons and speakers to the CPU, GPU, and RAM. A custom kernel can give you options like overclocking, undervolting (to save battery), adding touch-wake options, screen calibration, etc. Koontz is a very adjustable kernel. Messing with kernel options can be very risky though, so do your research before making any changes (and do a back-up!)
Sorry I ask too much question!
Click to expand...
Click to collapse
No problem! We're all here to learn and help others learn.
Planterz said:
It's my understanding that as long as you're not using encryption, your data won't be wiped. But definitely back your stuff up first.
Recovery is sorta like the BIOS menu on a computer. The stock recovery on a Samsung gives you the options reboot, clear your data or cache, or do a factory reset. Custom recoveries allow you to flash things like ROMs, kernels, modem firmwares, as well as do full back-up and restores. The wiping options differentiate between storage and the ROM, so when flashing ROMs, you can choose not to wipe your data (music, pictures, etc). The most popular and easy to use custom recovery is Team Win Recovery Project (TWRP). There's an app you can download from the Play Store that will install it for you (and update) once you're rooted. A custom recovery is an indispensable tool for modding your phone, and fixing it when you screw something up. Read up on TWRP and its capabilities before doing anything drastic with it.
CyanogenMod is by far the most popular custom ROM. It's very close to stock (ie: Nexus) Android, with some very useful features added without bogging the phone down with tones of useless crap. Many other custom ROMs borrow from CM, many built upon it and borrow from other custom ROMs. Personally, I think there's better ROMs out there than CyanogenMod, but that's a personal preference, and CM is a good place to start for anybody venturing into custom ROMs.
TouchWiz is what Samsung calls their UI. It'll be the stock ROM on the device. As I mentioned, Omega and Hyperdrive are examples of customized TouchWiz ROMs. They're tweaked for performance, some useless/unwanted features removed (like KNOX), often they port over features from newer or more powerful Samsung devices; it's possible to get features from the Note series and the S5 and S6 on your older S4 this way. They can also add other UI tweaks like expanded reboot menus, audio mods, visual tweaks, etc. The main advantage for using a customized TouchWiz ROM is that it'll be familiar, yet greatly improved.
Apart from that, custom kernels are fun to play with too. I use Koontz kernel on my S4. The kernel, simplistically put, is a bit of software that tells the operating system (ROM) how to use the hardware. This includes everything from the screen and buttons and speakers to the CPU, GPU, and RAM. A custom kernel can give you options like overclocking, undervolting (to save battery), adding touch-wake options, screen calibration, etc. Koontz is a very adjustable kernel. Messing with kernel options can be very risky though, so do your research before making any changes (and do a back-up!)
No problem! We're all here to learn and help others learn.
Click to expand...
Click to collapse
Awesome! Thanks a lot again!
It seems you have lots of knowledge on the S4, and since you have the same phone as I do, would it be okay if I just message you up instead of posting all my questions here?
Veridisduo said:
Awesome! Thanks a lot again!
It seems you have lots of knowledge on the S4, and since you have the same phone as I do, would it be okay if I just message you up instead of posting all my questions here?
Click to expand...
Click to collapse
Honestly, I'm not particularly knowledgeable about the S4; what I know is fairly basic and I'm relatively inexperienced with modifying this specific device. I got mine for $70, and after rooting and flashing TWRP, I tried a couple ROMs, found a custom kernel, and basically haven't really messed around with anything else for months. My S4 is not my primary device, that'd be my OnePlus One. Mainly I use the S4 as a mobile hotspot and to USB tether to my computer for home internet, since the battery is removable and I can use it for that purpose without ruining my OnePlus One (running a constant hotspot destroys batteries) .
Feel free to PM me, but it might be more prudent just to keep it public so anyone searching for the same answers can find them here, and if I can't answer them, someone else can. Right now though, it's bed time, then I'm off to work so don't think that I'm ignoring you if I don't answer in the next 20 hours or so.

Stock flashable

Good morning,
where can i find or how can i make a stock rom flashable via TWRP of stock firmware SM-G930F?
thanks
i want to know this same thing too if possible. previously owned S5 smg-900f which was good, but defo needs root access to unlock those missing things and remove the bloatware. S5 was simple to root but custom roms just caused problems so i found an almost stock one back then which worked great.
S7 edge smg-935f seems to be much more of a task.
i've tried various different methods already to try to get the s7 edge on root but it just isn't having it so far after about 20-25 attempts. different issues keep popping up.
*before you say it, yes it is the exynos not snapdragon version*
I need only because all the roms modded are for edge version and generate some problems on flat, so i want to flash a stock from TWRP keeping the advantage of use twrp for modding but remain stock... (i know that with odin i can flash stock an then mount TWRP..but i want a last chance when i made some troble with custom roms...)
bye
There is at least a way to make it from official stock firmware??

Recommendation for Oreo and maybe Custom ROM

I'm not really a very advanced user, but always had rooted devices and two that I flashed Custom Roms. This is my first Samsung, finding Touchwiz to be very different from what I used before.
I bought the S7 (930F) and had the news that it was going to be updated to Oreo, so I decided waiting for the update before tinkering with it.. But the update never came. Finally this month Samsung released the update for my region, so I would like to know which would be the best way for me to start finally using my phone that I bought for over 2 months!
My phone is still with Nougat, is it better for me to get the OTA or to flash the Firmware I downloaded from Sammobile? Any of these methods better than the other in preventing errors? I always found in PCs that a fresh clean install was better than an update, but with mobiles I don't have the experience to say.
My main objective is to experiment before doing a debloat as I'm still not sure what might be useful for me on Samsung's bloat (you are welcome to point me what is useful and what is not).
I did see that some of the Customs ROMS have different camera apps and some people were complaining about this, I particularly liked the S7 camera app and the Pro option, that's what holds me back in flashing a Custom ROM atm.
I would like to Root and I find Unlocked Bootloader to be useful to have Xposed Framework and other things that I can do having it.
As I'm a relative newbie, what would you guys recommend me doing? Please help
tl;dr: I want to have Oreo, be able to debloat, want to root and unlock bootloader, not sure about Custom Rom.
Lineage if you want basic and simple (sort of like stock Android). Resurrection Remix if you're a customisation nut (not a slam... I use RR).
If you wonna full samsung u need flash base firmawre custom roms only 8.0 android
If you dnt need samsung integration (pulsometr doesnt work) you can flash 8.1 roms try cosmic os or Lineage 15

Samsung SM-J37V (Help needed)

ok so here is my situation. currently im on stock latest update for this model. i am trying to find the correct stock firmware to download just incase anything goes wrong in the future. What i wanted to do was root the phone even though i wanted the current rom and everything backed up. i dont want to root or modify anything without taking a backup beforehand first. i havent rooted or done phone mods in a while and i have a contract with Verizon for this phone and dont want to brick it or atleast be able to return it to stock before my next phone upgrade incase i have to send it back. im kind of unsure where to start even though i would like to know where i can find the first stock firmware and how to flash it later just incase anything goes wrong. currently i was annoyed by the inability to change the apn settings even to disable ipv6 for the mobile data connection. im not sure it is possible if verizon has it locked and i stay away from ipv6 as much as possible because of privacy concerns so i guess if i cant disable it on the mobile network i will turn mobile data off until it is needed for something i really need while on the go.
here is what i wanted to do:
find a stock firmware file for this model just incase i have to flash to restore all default settings. it doesnt really matter if its updated i would even prefer the original or first one before all the update unless it would be recommended to download the updated one as well.
i was going to root with dr.fone until i heard about magisk because it doesnt modify system boot files or something along the lines of that. the only thing is i would like to know after i root with magisk can it be un rooted without messing up any of the stock files, or interfere with future updates if unrooted?
also i would like TWRP installed as i might want to install custom firmware if possible however if i can i would like to backup the stock recovery before i flash TWRP just incase, unless the custom recovery and everything will be restore with the stock firmware zip that can be flashed above. other than that if i can get this far and get some insight to backup and have things prepared before i dive in to modifying again in hopes i have a backup plan incase anything goes bad.
all help is appreciated and its been a while since i modifying android phones especially for this phone model i been on stock since i had it so im kind of lost in a way since i havent had recent experience for a few years in android modding and rooting in a while. hopefully i can get some feedback as im kind of lost on where to start and dont want to mess up my phone incase i need to get back to everything stock.
waiting for your replies i will get back tomorrow to see if there are any responses. i know this is going to eat up a lot of my time as well and honestly it has been stressing me out even though after i get working on it i should feel better.
Thank You!

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