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[Video Guide] How To Root Galaxy S4 I337 / I337m Easy & User Friendly

Hey folks. It's me again :victory: So I've got another super easy video guide on how to root your shiny new Samsung Galaxy S4 I337 or I337m.
This guide is using djrbliss's Motochopper tool. This tool has made it easier than ever to root a device! So BIG thanks goes out to him!
Links to everything can be found in the video description.
Enjoy

Here is a couple of more. I figure its better to keep them all in one place so people can decide which guide they want to use.
http://forum.xda-developers.com/showthread.php?t=2257039
http://forum.xda-developers.com/showthread.php?t=2257058
I think there might be a couple more out there but this should help people to answer any possible question about rooting that they could ever have.
If you have the AT&T OTA (MF3) for the SGH-I337 S4, the method in the OP does not work. Here is a method for rooting MF3:
http://forum.xda-developers.com/showthread.php?t=2387577
For Canadian MG1 Firmware, try CF Auto-Root download for the SGH-I337M:
http://forum.xda-developers.com/showthread.php?t=2293800

Just sold my Rogers S2 LTE because I upgraded to the S4. My quick question, if I ROOT and retain the original Samsung Recovery will I be able to still get and do official firmware upgrades? This is the only thing stopping me from going forward with rooting.

You can still get updates, but you will loose your root access with each update.

thanks: im now rooted and sim unlocked for free!

Slade8525 said:
thanks: im now rooted and sim unlocked for free!
Click to expand...
Click to collapse
Hey, how did you sim unlock it for free, do you mind sharing?

yeah sure!
similar method worked for my GS III; havent tested the GS IV with different sim just yet but GF's old GS III is working just fine for her sister in Canada (Bell i think). GF found it actually, and did it to hers 1st. ill know if it works when we leave for work in Montreal next week or if i bum a t-mobile cell from a friend.
http://forum.xda-developers.com/showthread.php?t=2282683

Stoneyguy said:
You can still get updates, but you will loose your root access with each update.
Click to expand...
Click to collapse
WRONG, I am unable to update my device, it says that my phone has been modified, and yes, I have rooted it with this video.

Whenever I try this method, when it goes to push the exploit, it says error multiple devices or something. when I only have the S4 plugged in. Followed step by step.

Dragosmp said:
WRONG, I am unable to update my device, it says that my phone has been modified, and yes, I have rooted it with this video.
Click to expand...
Click to collapse
My phone is rooted and still shows official in phone status. There is a post on how to regain that status while still maintaining your root.

Stoneyguy said:
My phone is rooted and still shows official in phone status. There is a post on how to regain that status while still maintaining your root.
Click to expand...
Click to collapse
Could you post a link to where it shows how to regain the status will maintaining the root?

rsarwar said:
Could you post a link to where it shows how to regain the status will maintaining the root?
Click to expand...
Click to collapse
The link has already been posted on the first page.

thanks worked great just rooted min in 5 min

Safe to root?
Excuse my ignorance, but on another thread it was suggested that in the absence of recovery and a backup image rooting might be premature. Is the general consensus now that it is safe to root? There seems to be some backup images around thought I don't know if they have been tested, and I haven't heard about recovery.
sblevine

Newbie here... couple of questions
I have the same concern as the member above... is it already possible to restore the phone if something goes bad? Is there instructions anywhere around this forum? where?
Also, once you root the phone you can proceed to download a ROM and install it... when a new ROM version is available and I download and install it, do I lose the root?
What is the best (if more than one is already available) for the ATT S4?
Thank you all and sorry for the "newbieness"....
Cheers:good:

speed2001 said:
I have the same concern as the member above... is it already possible to restore the phone if something goes bad? Is there instructions anywhere around this forum? where?
Also, once you root the phone you can proceed to download a ROM and install it... when a new ROM version is available and I download and install it, do I lose the root?
What is the best (if more than one is already available) for the ATT S4?
Thank you all and sorry for the "newbieness"....
Cheers:good:
Click to expand...
Click to collapse
No, rooting gives you certain superuser privileges. You can use Titanium Backup to freeze and restore bloatware, AdBlock to block advertisements, etc. Some phone tracking software and remote desktop control software requires root as well.
You cannot modify the basic operating system (ROM) until the bootloader is unlocked. You can overwrite the files, but that will brick your device since the bootloader checks signatures.
There is a bootloader exploit for the ATT S4 that will be released within the next week. The developer was waiting until the Verizon version of the S4 was available so more people would be able to use the exploit before it was patched.
Do not accept an OTA update for your device as that is how they will patch the bootloader exploit.
1. Root your device.
2. Carrier unlock your device.
3. Install custom ROM when bootloader is exploited later this week.

Relys said:
No, rooting gives you certain superuser privileges. You can use Titanium Backup to freeze and restore bloatware, AdBlock to block advertisements, etc. Some phone tracking software and remote desktop control software requires root as well.
You cannot modify the basic operating system (ROM) until the bootloader is unlocked. You can overwrite the files, but that will brick your device since the bootloader checks signatures.
There is a bootloader exploit for the ATT S4 that will be released within the next week. The developer was waiting until the Verizon version of the S4 was available so more people would be able to use the exploit before it was patched.
Do not accept an OTA update for your device as that is how they will patch the bootloader exploit.
1. Root your device.
2. Carrier unlock your device.
3. Install custom ROM when bootloader is exploited later this week.
Click to expand...
Click to collapse
Cool, thanks for the reply. I was under the impression that the bootloader was already exploited. Pure BS those protections that always end up broken like the IOS ones. What I would like is to have the S4 as factory released and load a good ROM without any problems and no bloatware. If not for the warranty I would buy an unlocked phone elsewhere.
Well, let's wait for the exploit next week. I don't want to brick my phone and not able to restore it. I will keep checking back.
Cheers and thanks again
Speed

Relys said:
No, rooting gives you certain superuser privileges. You can use Titanium Backup to freeze and restore bloatware, AdBlock to block advertisements, etc. Some phone tracking software and remote desktop control software requires root as well.
You cannot modify the basic operating system (ROM) until the bootloader is unlocked. You can overwrite the files, but that will brick your device since the bootloader checks signatures.
There is a bootloader exploit for the ATT S4 that will be released within the next week. The developer was waiting until the Verizon version of the S4 was available so more people would be able to use the exploit before it was patched.
Do not accept an OTA update for your device as that is how they will patch the bootloader exploit.
1. Root your device.
2. Carrier unlock your device.
3. Install custom ROM when bootloader is exploited later this week.
Click to expand...
Click to collapse
Regarding the bold above, I am honestly not that interested in the Custom ROMS right now, only rooting and with this method it does not install any custom recovery, right? As well, if I root via this method will I be able to still do the OTA updates since Samsung recovery is untouched? I know and understand that I will likely loose root, but I can always re-root, right?
I am itching to root and this is the only thing stopping me as there seems to be much confusion about this.
BTW I am on Rogers (Canada) i337M if it makes a difference

rsarwar said:
Regarding the bold above, I am honestly not that interested in the Custom ROMS right now, only rooting and with this method it does not install any custom recovery, right? As well, if I root via this method will I be able to still do the OTA updates since Samsung recovery is untouched? I know and understand that I will likely loose root, but I can always re-root, right?
I am itching to root and this is the only thing stopping me as there seems to be much confusion about this.
BTW I am on Rogers (Canada) i337M if it makes a difference
Click to expand...
Click to collapse
I've been a bit confused as well despite reading hundreds of posts and watching referenced videos (I've also been hesitant to ask questions given the culture of this board). Here is what I hope is accurate, please correct where I am wrong:
We can root I337 now.
Doing a simple root now is reversible, ie, can be un-rooted.
The bootloader unlock is needed primarily for custom roms.
If one does not desire a custom rom, there is no reason to wait to root.
And, a few questions:
Does rooting wipe out apps, settings, and/or data?
Will an AT&T android system update remove the root?
If so, can we just root again?
Thank you for clarifications. I'm sure there are many that are not posting with some of these questions. I will be glad to put together a noobie's guide if I can get a handle on all of this. It is all out there somewhere, but very fragmented, and often one post is contradicted by another.

zekeblue said:
I've been a bit confused as well despite reading hundreds of posts and watching referenced videos (I've also been hesitant to ask questions given the culture of this board). Here is what I hope is accurate, please correct where I am wrong:
We can root I337 now.
Doing a simple root now is reversible, ie, can be un-rooted.
The bootloader unlock is needed primarily for custom roms.
If one does not desire a custom rom, there is no reason to wait to root.
And, a few questions:
Does rooting wipe out apps, settings, and/or data?
Will an AT&T android system update remove the root?
If so, can we just root again?
Thank you for clarifications. I'm sure there are many that are not posting with some of these questions. I will be glad to put together a noobie's guide if I can get a handle on all of this. It is all out there somewhere, but very fragmented, and often one post is contradicted by another.
Click to expand...
Click to collapse
Your assumptions are correct:
1. Yep.
2. Yes, you can delete busybox and su in your system directory to get your phone switch your phone from "Custom" to "Official" status. If you install SuperSu and remove Superuser you can have root while keeping "Official" status.
3. Correct.
4. If you **** up while messing around with root you can recover to stock ROM via Odin or Kies. There is no reason to wait for root.
To answer your questions.
1. No, nothing changes. You just enable superuser privileges.
2. Typically yes. Don't accept OTA's until your know they're safe.
3. It depends if they patch the exploit or not.

[Q] If I Root Only? Do I lose warranty?

Hello, I have a Moto G for like the past 4 months and wanted to ask
If I ROOT Only would I lose my warranty?
Could I go back? or anything like before?
I simply want to ROOT it but do NOT want to add Roms or custom things.
Thank You

You need to unlock your phone's bootloader before rooting, so you will lose your warranty.
Sent from my Moto G using XDA Premium 4 mobile app

rudi_j7 said:
You need to unlock your phone's bootloader before rooting, so you will lose your warranty.
Sent from my Moto G using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Can't the stock firmware image be modified to include the 'su' binary and the SuperSU app, and then be flashed through fastboot? (Or whatever the "normal" way is)
I don't really know if its possible, but seems logical

@op no way to retain warranty after unlocking BL atm.
KDB223 said:
Can't the stock firmware image be modified to include the 'su' binary and the SuperSU app, and then be flashed through fastboot? (Or whatever the "normal" way is)
I don't really know if its possible, but seems logical
Click to expand...
Click to collapse
For any sort of modification to work, bl needs to unlocked afaik. So not possible :b

adizz4 said:
@op no way to retain warranty after unlocking BL atm.
For any sort of modification to work, bl needs to unlocked afaik. So not possible :b
Click to expand...
Click to collapse
I think you didn't get my point.
I meant "modifying" the stock firmware image which is available here on XDA somewhere (I think) to include the "su" binary and SuperSU app, and then flashing that through fastboot (or whatever method).
Flashing the stock firmware doesn't need unlocked BL, AFAIK.
Oops! Looks like it does
Guess I'll have to unlock the BL ultimately :/

KDB223 said:
Can't the stock firmware image be modified to include the 'su' binary and the SuperSU app, and then be flashed through fastboot? (Or whatever the "normal" way is)
I don't really know if its possible, but seems logical
Click to expand...
Click to collapse
Firmware images are signed, and if you modify them, they'd need to be resigned. Motorola's signature isn't able to be duplicated yet.
Sent from my XT1028 using Tapatalk

Anyway, just requesting the key from Motorola, voids the warranty.
If you are in the eu you should still have a warranty no matter what moto say but I don't know if anyone had tested it.

Can I root the Moto G3 with an app like KingRoot?

Hi peps,
I just switched from my crappy HTC One X to my new Moto G3 and I'm in love!
I don't really want a custom ROM, but I'd like to undervolt this babe. But since a root requires unlocking the bootloader = voiding the manufacturers warranty, I don't really wanna do that..
I've bought it over Amazon and I live in the EU, so I technically still have the retailer's warranty and Amazon would replace it without a hassle, but yeah.. it's new and all.
But I know there are apps like towelroot, KingRoot and what not, do they work with the Moto G3? I'm on 5.1.1.

Jut install SuperSU ZIP using TWRP recovery

Osid said:
Jut install SuperSU ZIP using TWRP recovery
Click to expand...
Click to collapse
Could you read my post first?
squid2 said:
Your bootloader must be unlocked to use this recovery.
Click to expand...
Click to collapse
unlocking bootloader = voiding warranty.

shawly said:
Could you read my post first?
unlocking bootloader = voiding warranty.
Click to expand...
Click to collapse
If you're worried about voiding the warranty, you're on the wrong site.

Ragarianok said:
If you're worried about voiding the warranty, you're on the wrong site.
Click to expand...
Click to collapse
Thanks for this unnecessary input. :good:
On previous versions of Android there were exploits that allowed rooting the phone without unlocking the bootloader, which means you could keep your warranty and I just asked if it works on the current Moto G3 with Lollipop 5.1, why do you have to be such a smartass? It's a normal question, why can't I have a normal answer?

I used to root in one click in just one method on my previous phone xperia sp but i dont know this phone have any toll which will work or not?

shawly said:
Thanks for this unnecessary input. :good:
On previous versions of Android there were exploits that allowed rooting the phone without unlocking the bootloader, which means you could keep your warranty and I just asked if it works on the current Moto G3 with Lollipop 5.1, why do you have to be such a smartass? It's a normal question, why can't I have a normal answer?
Click to expand...
Click to collapse
Being a smartass is kind of my thing.
You're afraid to unlock your device's bootloader because you'll lose the warranty, but you're perfectly fine with risking the security of your device by rooting it, right? Seems odd to me, but whatever.
Generally speaking, both KingRoot and TowelRoot are used on devices where using those two methods are the only way to root those devices.
Unlocking the bootloader will have no ill effect on your device other than voiding the warranty, and, if you're worried about voiding your warranty, you shouldn't be trying to modify your device.
In the words of the always optimistic Ms. Frizzle: "Take chances, make mistakes, and get messy!"
---------- Post added at 10:39 AM ---------- Previous post was at 10:33 AM ----------
zephiK said:
Just unlock the bootloader and root. You're making it too difficult for yourself, the whole point of the bootloader being locked is to prevent changes being made to the system.
Its like saying, you're going to break your windows to get into your house when you can just unlock the door.
Just unlock the bootloader and flash supersu for root.
Click to expand...
Click to collapse
Also this.

Ragarianok said:
Being a smartass is kind of my thing.
You're afraid to unlock your device's bootloader because you'll lose the warranty, but you're perfectly fine with risking the security of your device by rooting it, right? Seems odd to me, but whatever.
Generally speaking, both KingRoot and TowelRoot are used on devices where using those two methods are the only way to root those devices.
Unlocking the bootloader will have no ill effect on your device other than voiding the warranty, and, if you're worried about voiding your warranty, you shouldn't be trying to modify your device.
In the words of the always optimistic Ms. Frizzle: "Take chances, make mistakes, and get messy!"
Click to expand...
Click to collapse
Who said I'm afraid of unlocking the bootloader? Who said I never unlocked the bootloader of other phones before?
I just don't wanna lose my warranty in the first two or three months, in case my phone breaks unexpectedly, I also don't plan on using custom roms, I just want the root features so I can undervolt like I said and IF I could root it permanently without unlocking the bootloader, why not?
I'm not worried, it would just be convenient to have root without losing the warranty, that's it.

As far as I know you may be able to do it search kingroot in Google then download the apk and install it then open in and follow the instructions

shawly said:
Who said I'm afraid of unlocking the bootloader? Who said I never unlocked the bootloader of other phones before?
I just don't wanna lose my warranty in the first two or three months, in case my phone breaks unexpectedly, ...
Click to expand...
Click to collapse
Then leave the device stock ...
If you want the best of both worlds (root & warranty), then go buy a Nexus. Motorola drew a line in the sand as to what they will support, while still empowering owners with the option to unlock the bootloader.
Sent from my MotoG3 using Tapatalk

Ragarianok said:
If you're worried about voiding the warranty, you're on the wrong site.
Click to expand...
Click to collapse
Not really. While I've unlocked my previous phones, my new g3 I'm leaving locked for the first year, while the warranty lasts. But this site still has a few helpful stuff.
Ragarianok said:
...You're afraid to unlock your device's bootloader because you'll lose the warranty, but you're perfectly fine with risking the security of your device by rooting it, right? Seems odd to me, but whatever...if you're worried about voiding your warranty, you shouldn't be trying to modify your device...
Click to expand...
Click to collapse
He just wants the warranty, but he doesn't care about rooting it because there's not really anything wrong with rooting if you know what you're doing and how to fix it.
Sent from my MotoG3 using XDA Free mobile app
---------- Post added at 01:03 PM ---------- Previous post was at 01:03 PM ----------
And to answer the question; you need to unlock the bootloader to root
Sent from my MotoG3 using XDA Free mobile app

Question, I attempted to use towelroot on my stock g3 and got a message saying my phone is not supported. Any help is greatly appreciated. Also, fairly newbish, so be gentle!!

Jdwright0819 said:
Question, I attempted to use towelroot on my stock g3 and got a message saying my phone is not supported. Any help is greatly appreciated. Also, fairly newbish, so be gentle!!
Click to expand...
Click to collapse
Towelroot is exploiting a bug in the Linux Kernel in order to root a device. This bug was already fixed in June 2014.
On all Kernels with a later build date Towelroot will most likely not work.
For sure it will not work on the Moto G3 with a kernel build date more than one year after this bug was fixed.

Thanks!

shawly said:
Hi peps,
I just switched from my crappy HTC One X to my new Moto G3 and I'm in love!
I don't really want a custom ROM, but I'd like to undervolt this babe. But since a root requires unlocking the bootloader = voiding the manufacturers warranty, I don't really wanna do that..
I've bought it over Amazon and I live in the EU, so I technically still have the retailer's warranty and Amazon would replace it without a hassle, but yeah.. it's new and all.
But I know there are apps like towelroot, KingRoot and what not, do they work with the Moto G3? I'm on 5.1.1.
Click to expand...
Click to collapse
It's probably been answered already but those exploits are security flaws with the SE Linux system and so with each release of android these have been patched, by 5.1 these security holes have been fixed and now by locking the bootloader
It's like just locking down and modifications to the system partition so unfortunately you can't root without unlocking, unless you have android versions lower down
shawly said:
Thanks for this unnecessary input. :good:
On previous versions of Android there were exploits that allowed rooting the phone without unlocking the bootloader, which means you could keep your warranty and I just asked if it works on the current Moto G3 with Lollipop 5.1, why do you have to be such a smartass? It's a normal question, why can't I have a normal answer?
Click to expand...
Click to collapse

I have unlocked bootloader and i m on stock recovery amd on stock rom without rooted. Can i install twrp without pc

Are you root yet

I have moto g 3, its bootloader is unlpcked but when I tried to root it using SuperSU and twrp recovery then I ended up corrupting it software. Can anybody tell me how to safely root it...?

Ankur1 said:
I have moto g 3, its bootloader is unlpcked but when I tried to root it using SuperSU and twrp recovery then I ended up corrupting it software. Can anybody tell me how to safely root it...?
Click to expand...
Click to collapse
What version of TWRP did you use coz I know there were some bugs on the moto range with TWRP 2.X.
I would completely wipe device using stock recovery, including dalvic/cache/data everything just to be on the safe side, then download the TWRP zip to your computer and flash it on using ADB.
Boot up normally and move the superSU zip from the link to your phones internal storage. Then reboot to TWRP, select install and pick the zip file.
superSU.zip:
http://dl-1.va.us.xda-developers.com/3/6/5/5/4/0/1/BETA-SuperSU-v2.62-3-20151211162651.zip?key=u0OeGV4-4s02KJXqrXJ-gg&ts=1466705675
If you get stuck this might help:
https://motog3.com/unlock-bootloader-install-twrp-root-moto-g3/

No longer works
Osid said:
Jut install SuperSU ZIP using TWRP recovery
Click to expand...
Click to collapse
Perhaps you can offer wisdom on this? I rooted my Moto G 3rd Gen once, wrecked something and had to go back to factory, then try to reroot again. Problem. No matter what I do in setting the device back to factory, the bootloader stays unlocked and reads the system software as "modified" which then seems to bork installing SuperSU. I install SuperSU via twrp and it goes fine, no errors, but when I reboot the system is lost in a loop of the "bootloader unlocked" screen.
So I cannot RE-lock the bootloader (ala setting the phone back to true factory) and after I flash SuperSU the phone refuses to successfully bootup.
Any aid? Ideas?
I had failed to backup my phone the first time with twrp and so to set to factory I downloaded the stock retail xml.zip for my phone and reflashed the entire thing via fastboot. Reinstall twrp, and try to root and the endless boot loop begins.
So I came to this thread to look into the possibility rooting my phone via another means that MIGHT work.

Edit build.prop to enable tethering without root?

Hey guys, i'm wondering if it's possible to edit the build.prop so I can enable tethering without root. I don't want to lose Android Pay and i'm trying to keep my phone stock for the time being but I would like to be able to use tethering once in a while. Also, I haven't unlocked the bootloader and am using stock recovery and the phone was bought direct from Google.
Thanks everybody!

Same here. Would love to have unlocked hotspot/tether without root

I don't think there is a way to make the necessary edits to the files that need them without root access.

edgemaster191 said:
Hey guys, i'm wondering if it's possible to edit the build.prop so I can enable tethering without root. I don't want to lose Android Pay and i'm trying to keep my phone stock for the time being but I would like to be able to use tethering once in a while. Also, I haven't unlocked the bootloader and am using stock recovery and the phone was bought direct from Google.
Thanks everybody!
Click to expand...
Click to collapse
Unfortunately, there is no way to edit the build.prop without root access. I

Root. Modify. Unroot. Keep bootloader unlocked and install custom kernel to have access to Android Pay if you need it.
Sent from my Pixel using Tapatalk

According to sd_shadow, modifying build.prop can be done with TWRP and PC (without root).
Referring to this post by sd_shadow here: https://forum.xda-developers.com/showpost.php?p=70490702&postcount=118
Any ideas how?
I'm on 7.1.1, bootloder unlocked, Verizon Pixel. Would like to avoid root if possible. That's the main reason I got this phone, I got tired of the rooting-related BS.

indyzzzz said:
According to sd_shadow, modifying build.prop can be done with TWRP and PC (without root).
Referring to this post by sd_shadow here: https://forum.xda-developers.com/showpost.php?p=70490702&postcount=118
Any ideas how?
I'm on 7.1.1, bootloder unlocked, Verizon Pixel. Would like to avoid root if possible. That's the main reason I got this phone, I got tired of the rooting-related BS.
Click to expand...
Click to collapse
I could be wrong, but I think once you modify that file - root or not - you may run into some of that BS anyway (failed OTA's, etc) since the system will have been modified from stock.

chili81 said:
I could be wrong, but I think once you modify that file - root or not - you may run into some of that BS anyway (failed OTA's, etc) since the system will have been modified from stock.
Click to expand...
Click to collapse
So I guess sd_shadow was referring to root-modify-build-prop-unroot procedure. No way to avoid root.....

More styles for EdgeLighting

Hi, i am looking more styles for EdgeLighting. before, we could use EdgeLighting+ but now its not working on android 12.
there is an app called muviz edge that contains excellent styles but app does not work properly. so i am looking for a better app for replacing edgelighting+ with beautiful styles.
can we install S21 or something else edge lighting app on our A51?
do you have any recommended app?

Funny thing is, your phone already has all the edge lighting effects built in, the only problem is that there is a specific file called floating_feature that's missing one text line that would make all those extra edge lighting effects appear
So to answer your question, to get more styles for edge lighting you need to root your phone and edit the following file:
system/etc/floating_feature.xml
And add the following line inside the features:
<SEC_FLOATING_FEATURE_SYSTEMUI_CONFIG_EDGELIGHTING_FRAME_EFFECT>frame_effect</SEC_FLOATING_FEATURE_SYSTEMUI_CONFIG_EDGELIGHTING_FRAME_EFFECT>
Save, reboot and your phone should now have all the effects available that Samsung enables on their flagship phones.
And before you ask, no, there is no way to do this without root.

Tnx, but with root, secure folder will be disabled. and i cant root my phone.
in android 10 We could install edgelighting+ that installs additional styles. (without root).
so Did EdgeLighting+ somehow edit this file?

mahdi72 said:
Tnx, but with root, secure folder will be disabled. and i cant root my phone.
in android 10 We could install edgelighting+ that installs additional styles. (without root).
so Did EdgeLighting+ somehow edit this file?
Click to expand...
Click to collapse
I have no clue. But as you said, edge lighting+ no longer works so on newer Android versions, rooting is your only choice.

ShaDisNX255 said:
I have no clue. But as you said, edge lighting+ no longer works so on newer Android versions, rooting is your only choice.
Click to expand...
Click to collapse
Can i Edit Stock Rom in Linux (add Floating_Feature, remove apps, add new apps) and flash it in my A51 phone?
Do I need root to install this modified rom?

mahdi72 said:
Can i Edit Stock Rom in Linux (add Floating_Feature, remove apps, add new apps) and flash it in my A51 phone?
Do I need root to install this modified rom?
Click to expand...
Click to collapse
You will need to root, yes. Since you will edit it, it will lose Samsung's trusted signature and will therefore count as a custom ROM

ShaDisNX255 said:
You will need to root, yes. Since you will edit it, it will lose Samsung's trusted signature and will therefore count as a custom ROM
Click to expand...
Click to collapse
As far as I have researched, it does not seem to require root, but we have to open the bootloader or OEM Option in Developer Mode.
People are also talking about a tool called Odin Patched, which can bypass some verifications.
Is it possible to flash only the edited CSC file with this tool? Sorry to take up your time

mahdi72 said:
As far as I have researched, it does not seem to require root, but we have to open the bootloader or OEM Option in Developer Mode.
People are also talking about a tool called Odin Patched, which can bypass some verifications.
Is it possible to flash only the edited CSC file with this tool? Sorry to take up your time
Click to expand...
Click to collapse
Hey no worries, XDA is meant for a place to learn and I'm happy to try and help/educate in any way I can.
Opening the bootloader is step 1 in getting root access. You may think that root is the equivalent of installing Magisk and that's what root is but it's a lot more than that. By installing something custom you've in some way obtained root access by editing your stock ROM.
But anyway, going back to your original question/answer, the patched Odin can only bypass some verifications on Odin's side but it can't bypass the verification that the phone does itself. The patched Odin is mainly for installing U firmware on U1 variants and vice-versa, something that you can't do on the original Odin. It can't really bypass checking the validity of Samsung's signature on stock firmware. Even if it could bypass that check, the phone also checks the firmware it's being installed so it will detect it as a custom fw file
So, long story short, if you edit stock FW with any tool it will break Samsung's trusted signature and both phone and Odin will pick it up as a custom firmware (i.e. custom ROM) and you will only be able to install it by unlocking the bootloader. Flashing anything custom will break/trip Knox and it will be broken forever
Let me know if you have any more questions I can help you with.

ShaDisNX255 said:
Hey no worries, XDA is meant for a place to learn and I'm happy to try and help/educate in any way I can.
Opening the bootloader is step 1 in getting root access. You may think that root is the equivalent of installing Magisk and that's what root is but it's a lot more than that. By installing something custom you've in some way obtained root access by editing your stock ROM.
But anyway, going back to your original question/answer, the patched Odin can only bypass some verifications on Odin's side but it can't bypass the verification that the phone does itself. The patched Odin is mainly for installing U firmware on U1 variants and vice-versa, something that you can't do on the original Odin. It can't really bypass checking the validity of Samsung's signature on stock firmware. Even if it could bypass that check, the phone also checks the firmware it's being installed so it will detect it as a custom fw file
So, long story short, if you edit stock FW with any tool it will break Samsung's trusted signature and both phone and Odin will pick it up as a custom firmware (i.e. custom ROM) and you will only be able to install it by unlocking the bootloader. Flashing anything custom will break/trip Knox and it will be broken forever
Let me know if you have any more questions I can help you with.
Click to expand...
Click to collapse
Thank you, now many things are clear.
I want to know if unlocking the bootloader is worth it?
I have no problem with the warranty, I have the phone for more than 2 years and Samsung has no after sales service in our country. But for me, the use of banking app, Secure Folder, Samsung Pass are very important.
Is there a way to make all these apps work without problems by unlocking the bootloader?
Surely the OTA updates will also fail with this work, right?
can i unlock bootloader, flash edited files and relock bootloader?

mahdi72 said:
But for me, the use of banking app, Secure Folder, Samsung Pass are very important.
Click to expand...
Click to collapse
Some banking apps are harder to trick than others. I have no problems hiding root from my banking app but I've seen others struggle to hide from theirs, can't really comment on it. Secure Folder has a fix in Android 12 so it should be able to be fixed. Samsung Pass is something that still has no fix as far as I know so if you decide to root/blow knox fuse, this will never work again even if you lock your bootloader again. I've made my change to Google Pass which works with root so Samsung Pass isn't important to me anymore.
mahdi72 said:
Surely the OTA updates will also fail with this work, right?
Click to expand...
Click to collapse
This is correct, OTA updates stop working when you unlock your bootloader but if you re-lock your bootloader, you may get OTA updates again.
mahdi72 said:
can i unlock bootloader, flash edited files and relock bootloader?
Click to expand...
Click to collapse
No, this will lock your phone. Once you edit anything with root or install a custom fw (rom) then it will always count as custom for the phone. If you lock your bootloader while you have custom fw installed, your phone will be stuck in download mode telling you that your phone has custom fw and will refuse to boot until you flash stock fw.

Thank you very much for your very detailed explanation
So, for this part, I need Magisk, which probably Hide all banking apps in Iran
ShaDisNX255 said:
Some banking apps are harder to trick than others. I have no problems hiding root from my banking app but I've seen others struggle to hide from theirs, can't really comment on it.
Click to expand...
Click to collapse
According to your explanation, This is my decision: I can unlock the bootloader and flash the modified ROM (I can apply the necessary fixes for Secure Folder and other changes to the ROM (Can i?)). The only thing I miss is the Samsung Pass feature, which I can replace with Google Pass, OTA updates can be ignored and do not have much priority for me.
The only important thing is the banking apps.
When the bootloader is unlocked, is the root status rooted or un-rooted? Because I feel that some banking apps only check root access and have nothing to do with bootloader (At least in Iran).
If the root status has not changed after Unlocking the bootloader (I think the root status changes after installing Magisk or SU) I think that I can do the above steps and reach my goal

mahdi72 said:
This is my decision: I can unlock the bootloader and flash the modified ROM (I can apply the necessary fixes for Secure Folder and other changes to the ROM (Can i?))
Click to expand...
Click to collapse
You can, yeah.
mahdi72 said:
When the bootloader is unlocked, is the root status rooted or un-rooted?
Click to expand...
Click to collapse
With unlock bootloader alone it's still un-rooted
mahdi72 said:
When the bootloader is unlocked, is the root status rooted or un-rooted? Because I feel that some banking apps only check root access and have nothing to do with bootloader (At least in Iran).
If the root status has not changed after Unlocking the bootloader (I think the root status changes after installing Magisk or SU) I think that I can do the above steps and reach my goal
Click to expand...
Click to collapse
This is where it can get a little tricky and depends on each app because it's not a standard. If your banking app checks if your bootloader is unlocked then you pretty much need Magisk to hide your bootloader unlocked. Without Magisk, any app will be able to check that you have an unlocked bootloader
If your bank app checks to see if you have Magisk only then you can certainly avoid having to flash Magisk if you're not going to use it anyway
If your bank apps checks safetynet then you will again need to flash Magisk and flash a patch to pass safetynet tests
Again, it's not a standard so it all depends on the bank app in question. You can certainly try to unlock your bootloader and stay in stock and check if your bank apps detects your unlocked bootloader. Just unlocking bootloader shouldn't blow knox yet.

ShaDisNX255 said:
You can, yeah.
With unlock bootloader alone it's still un-rooted
This is where it can get a little tricky and depends on each app because it's not a standard. If your banking app checks if your bootloader is unlocked then you pretty much need Magisk to hide your bootloader unlocked. Without Magisk, any app will be able to check that you have an unlocked bootloader
If your bank app checks to see if you have Magisk only then you can certainly avoid having to flash Magisk if you're not going to use it anyway
If your bank apps checks safetynet then you will again need to flash Magisk and flash a patch to pass safetynet tests
Again, it's not a standard so it all depends on the bank app in question. You can certainly try to unlock your bootloader and stay in stock and check if your bank apps detects your unlocked bootloader. Just unlocking bootloader shouldn't blow knox yet.
Click to expand...
Click to collapse
thank you so much Now everything became clear to me