Safe to upgrade rooted N910C to Marshmallow using official Odin FW? - Galaxy Note 4 Q&A, Help & Troubleshooting

I have an N910C currently on 5.1.1 with an OXX CSC. A few days ago Samsung finally released an OXX version of Marshmallow, so I'm preparing to upgrade.
Is it safe to simply flash using Odin, then reroot and restore any tweaks? Or is there something nasty hidden in the bootloader (e.g. mandatory dm-verity or signed-kernels-only) that requires flashing in some custom way?

Odin is THE SAFEST and most recommended thing to flash a ROM for a Samsung phone.

But is it safe to flash the unmodified full 6.0.1 ROM from Samsung, including bootloader and everything? Or is there something nasty hidden inside, like a new bootloader lock? I'm asking because that has happened before on Samsungs.

.NetRolller 3D said:
But is it safe to flash the unmodified full 6.0.1 ROM from Samsung, including bootloader and everything? Or is there something nasty hidden inside, like a new bootloader lock? I'm asking because that has happened before on Samsungs.
Click to expand...
Click to collapse
Bootloader is locked in n910c after COJ5. Having that said ypu won't be able to downgrade to Kit Kat

How does one upgrade to 6.01 in the first place? I just bought a note 4 and it seems stuck on 5.1.1. I don't have a PC to use Odin. They haven't pushed MM to the N910C? All my Google searches seem to show up articles of that occurring back in April, but it is not so for my phone.
Sent from my SM-N910C using XDA-Developers mobile app

Related

Question on 5.1.1

Quick background. So my note 4 is currently on 5.0.1 boe1, stock rooted knox flag tripped so I cant update via OTA to 5.1.1 which is fine, I'm already readying myself for a manual Odin update
Question is that if there is a 5.1.1 firmware avail on my country for my provider, if I flash the stock 5.1.1 firmware does it also flash the 5.1.1 bootloader or will it retain my 5.0.1 bootloader? I'm pretty sure it will also update the bootloader but wanted to ask anyway to confirm.
Main reason for asking is that I know you lose root when you flash stock firmware via Odin. I'd still want to attain root after upgrading to 5.1.1. Not sure if there are any methods to date to root on 5.1.1 bootloader, or if its safe to flash the 5.0.1 bootloader after the 5.1.1 stock firmware flash.
TIA for those who would answer. [emoji1]
Sent from my SM-N910C using Tapatalk
trebllaw said:
Quick background. So my note 4 is currently on 5.0.1 boe1, stock rooted knox flag tripped so I cant update via OTA to 5.1.1 which is fine, I'm already readying myself for a manual Odin update
Question is that if there is a 5.1.1 firmware avail on my country for my provider, if I flash the stock 5.1.1 firmware does it also flash the 5.1.1 bootloader or will it retain my 5.0.1 bootloader? I'm pretty sure it will also update the bootloader but wanted to ask anyway to confirm.
Main reason for asking is that I know you lose root when you flash stock firmware via Odin. I'd still want to attain root after upgrading to 5.1.1. Not sure if there are any methods to date to root on 5.1.1 bootloader, or if its safe to flash the 5.0.1 bootloader after the 5.1.1 stock firmware flash.
TIA for those who would answer. [emoji1]
Sent from my SM-N910C using Tapatalk
Click to expand...
Click to collapse
Simple bro. Don't forget to backup your data!!!
Poland 5.1.1 comes with 4 files including bootloader, modem, csc and system. Country or provider means nothing for it, it will work anyway. So, here are the things you gonna do:
1-) Flash Poland 5.1.1 with odin (be careful to place all files in correct section in odin!!!)
2-) Enable usb debugging from developer options
3-) Flash twrp with odin
4-) Lastly, flash which 5.1.1 rom you like, all of them are rooted now :good:
Bumping up since 5.1.1 is already avail on my country. Wanted to know if flashing the 5.1.1 firmware would wipe the device or will it be just an upgrade.?Haven't tried flashing an official firmware on top of an official stock (lower version).
trebllaw said:
Bumping up since 5.1.1 is already avail on my country. Wanted to know if flashing the 5.1.1 firmware would wipe the device or will it be just an upgrade.?Haven't tried flashing an official firmware on top of an official stock (lower version).
Click to expand...
Click to collapse
It won't wipe your phone data, it will be like an upgrade.
Secondly tripping knox does not mean you will not receive OTA. As long as you are fully stock and when you check the system status in settings and it states 'official' you will receive the OTAs
Battlehero said:
It won't wipe your phone data, it will be like an upgrade.
Secondly tripping knox does not mean you will not receive OTA. As long as you are fully stock and when you check the system status in settings and it states 'official' you will receive the OTAs
Click to expand...
Click to collapse
Thanks! Yep, realize that now. I believe the reason I can't receive OTA is due to the custom recovery I've installed. Will try reverting to stock recovery first to see if I can OTA upgrade. If not, will download the full firmware and flash on ODIN.
trebllaw said:
Thanks! Yep, realize that now. I believe the reason I can't receive OTA is due to the custom recovery I've installed. Will try reverting to stock recovery first to see if I can OTA upgrade. If not, will download the full firmware and flash on ODIN.
Click to expand...
Click to collapse
The ROM might still consider your device to modified, You may have to flash stock from Odin and then check the status, if it still says modified then a factory reset might be required.

downgrade lollipop to jellybean?

is it possible to downgrade lollipop stock rom to stock jellybean?or do i need to downgrade first to kitkat stock before downgrading to jellybean?i want to do this because i have apps that i used when im on jellybean which is not compatible with kitkat and lollipop.
Using Odin you should be able to downgrade directly to Android 4.3
You will have to do a factory reset in recovery.
I did my factory reset after downgrading the firmware, but guessing you could do it before the downgrade and then not have to worry about the auto-reboot in Odin.
Hi
I have a problem during flashing from 4.4.2 to 4.3. After start the process fails by aboot.mbn. If I remove the file aboot.mbn in the md5-package and start the process again, it works. The mobile flashs back to 4.3, but it hasn't sound and I can't record Video or Soundmemo. Please help! I don't what to do.
I'm looking forward.
Best wishes
Aboot.mbn is the bootloader. You cannot flash a 4.3 bootloader over a 4.4.2 bootloader.
audit13 said:
Aboot.mbn is the bootloader. You cannot flash a 4.3 bootloader over a 4.4.2 bootloader.
Click to expand...
Click to collapse
Is there any way to go around the bootloader? Would it help to flash lollipop 5.0.1 and then to flash back to jelly bean 4.3 or the lollipop has a bootloader locker too.
Thank's so much!!
There is no way to downgrade the bootloader to 4.3 once the phone has been flashed with 4.4.2 or newer. This applies to many Samsung phones including the s3, note 3, note 4, etc.
audit13 said:
There is no way to downgrade the bootloader to 4.3 once the phone has been flashed with 4.4.2 or newer. This applies to many Samsung phones including the s3, note 3, note 4, etc.
Click to expand...
Click to collapse
I flashed my S3 from 4.4.4 to 4.3 and tab 3 from 4.4.2 to 4.2.2 without any problems...why it doesn't works on S4?
Are you sure that the ROM you used to downgrade included a bootloader?
For the s3, it may be possible to go to a 4.3 bootloader as there was no bootloader after 4.4.2 but I'm not 100% sure. I have no idea about the tab.
audit13 said:
Are you sure that the ROM you used to downgrade included a bootloader?
For the s3, it may be possible to go to a 4.3 bootloader as there was no bootloader after 4.4.2 but I'm not 100% sure. I have no idea about the tab.
Click to expand...
Click to collapse
Hi,
yes, there were one. I've rolled my s4 back to 4.3 now, but I have no sound in it...What can I do?
I'm looking forward.
Best wishes.
You installed the 4.3 bootloader too? You may want to run Samsung Phone Info from the play store to confirm.
audit13 said:
You installed the 4.3 bootloader too? You may want to run Samsung Phone Info from the play store to confirm.
Click to expand...
Click to collapse
I'm not sure. I removed the file aboot.mbn and converted the md5 archive to tar archive and finaly flashed my s4. It works, but there's only no sound in thy system.
Dr Goodvibes said:
Using Odin you should be able to downgrade directly to Android 4.3
You will have to do a factory reset in recovery.
I did my factory reset after downgrading the firmware, but guessing you could do it before the downgrade and then not have to worry about the auto-reboot in Odin.
Click to expand...
Click to collapse
I'm not able to downgrade it from lollipop too. I haven't the option to unlock the oem in the developer options
The OEM unlock bootloader option is only useful where a phone has a locked bootloader. In the case of your s4, the bootloader is not locked and cannot be downgraded.
The aboot.mbn file is the bootloader and removing it means the phone is running a 4.3 ROM on a 4.4.2 bootloader. This is probably why not every works properly.
audit13 said:
The OEM unlock bootloader option is only useful where a phone has a locked bootloader. In the case of your s4, the bootloader is not locked and cannot be downgraded.
The aboot.mbn file is the bootloader and removing it means the phone is running a 4.3 ROM on a 4.4.2 bootloader. This is probably why not every works properly.
Click to expand...
Click to collapse
How can I solve this problem?
You can solve the sound problem by flashing a newer ROM.
You cannot downgrade the bootloader and trying to downgrade may brick the phone by damaging the bootloader.
audit13 said:
You can solve the sound problem by flashing a newer ROM.
You cannot downgrade the bootloader and trying to downgrade may brick the phone by damaging the bootloader.
Click to expand...
Click to collapse
Why it worked with tab 3 and s3? I saw many videos on youtube, there rolled guys the system back...Well, Ithink it's my fate to have the kitkat. I hate this system.
The s3 and Tab 3 are totally different items. Being able to downgrade a bootloader on one device does not automatically mean every bootloader in a company's product line can be downgraded.
Have you tried running a custom ROM on the phone? You may find those more palatable.
audit13 said:
The s3 and Tab 3 are totally different items. Being able to downgrade a bootloader on one device does not automatically mean every bootloader in a company's product line can be downgraded.
Have you tried running a custom ROM on the phone? You may find those more palatable.
Click to expand...
Click to collapse
Can I flash for example cyangenmod 12 and then flash android 4.3?
There is no way to run a completely stock 4.3 ROM, including the bootloader, on the s4 once it has been upgraded to 4.4.2 or 5.01.
audit13 said:
There is no way to run a completely stock 4.3 ROM, including the bootloader, on the s4 once it has been upgraded to 4.4.2 or 5.01.
Click to expand...
Click to collapse
In 2013 there were S4 with 4.2.2. Why I can't roll my system back?

Marshmallow 6.0 to 5.1.1

So, recently I received the Marshmallow Update for the Note 4, and I have been procrastinating to update it to 6.0, and I know I am being skeptical, but if there was a chance my battery life would get worst, is it safe to downgrade with firmwares from sam-mobile? Would it trip the KNOX counter? How do I get the original firmware off my phone without rooting it? I know it's a choice to update or not, but the 6.0 Notification is annoying and tempting.
BUMP
Sometimes you have e to jump first.
First things first:
1) Like kitkat, marshmallow has the best battery backup. You won't have any problems with the battery if you do a clean install through odin. (What I mean by clean install: first wipe data/factory reset through recovery before flashing through odin).
2) Upgrading-downgrading doesn't trip the knox counter if you flash only samsung official firmwares. Rooting or flashing some other software does trip the knox.
3) The ability to downgrade from marshmallow depends on which phone your having. For example mine is the SM-N910G snapdragon variant. Here in India when they initially released marshmallow, it didn't come with a locked bootloader. Hence we could downgrade easily. But the new marshmallow updates that came later had locked bootloaders.
yes, i've done that.. no problem at all

[Help] Install twrp in Galaxy s5 sm-g900v 6.0.1

Hey there I just got a new samsung galaxy s5, and I have been searching on the internet since yesterday, and haven't been able to find a thread that gives me information about installing custom recovery or installing a rom based in stock without any bloatware.
My phone is the samsung galaxy s5 sm-g900v (not rooted, i haven't been able to do it, maybe it's not posible yet )
android 6.0.1
kernel version 3.4.0
So my questions are:
Can I flash the twrp.tar file with odin?
Is there anyway to install a rom based in the stock of samsung but without bloatware?
And finally, can I root android 6.0.1 in my verizon s5?
Thanks in advance
you have alot to learn my friend.. if you are on 6.0.1 i dont think you can downgrade. you need to be on a 5.0 and then root then if you have a samsung board you can unlock the boot loader to install TWRP if its a toshiba you cant..
zachspod said:
you have alot to learn my friend.. if you are on 6.0.1 i dont think you can downgrade. you need to be on a 5.0 and then root then if you have a samsung board you can unlock the boot loader to install TWRP if its a toshiba you cant..
Click to expand...
Click to collapse
I just got the s5, but i get rid of it,im back on my old lg g2, seems it was imposible to install a clean rom on that device.
6.0.1 is downgradable. If you had a 15 chip then you could get TWRP. Even if you had an 11 chip you could still flash a debloated rom on Lolipop.
leotakacs said:
6.0.1 is downgradable. If you had a 15 chip then you could get TWRP. Even if you had an 11 chip you could still flash a debloated rom on Lolipop.
Click to expand...
Click to collapse
I've searched but I'm lost on where and how to downgrade 6.01? Is it just flashing over a 5.0 ? or is there more to it because it's new? And where can you find a guide for rooting 6.01 or downgrading it and then rooting?
leotakacs said:
6.0.1 is downgradable. If you had a 15 chip then you could get TWRP. Even if you had an 11 chip you could still flash a debloated rom on Lolipop.
Click to expand...
Click to collapse
I already gave the phone to my gf, but what would happen if I try to flash a stock based debloated rom with my pc? I mean flashing the debloated version of 6.0.1?
shibtastic said:
I've searched but I'm lost on where and how to downgrade 6.01? Is it just flashing over a 5.0 ? or is there more to it because it's new? And where can you find a guide for rooting 6.01 or downgrading it and then rooting?
Click to expand...
Click to collapse
Flash a G900V 5.0 Lollipop Odin TAR. If you have a CID 11 chip then you can either:
- Downgrade to lollipop and stay rooted their.
- Stay / upgrade to marshmallow but not have root.
DanyMarroquin said:
I just got the s5, but i get rid of it,im back on my old lg g2, seems it was imposible to install a clean rom on that device.
Click to expand...
Click to collapse
you can downgrade from marshmellow to lolipop however you cannot downgrade to kitkat due to the fact that the bootloader is different
I advise you DO NOT make move to unlock bootloader on locked device.Like install 900f roms 900f kernels. Because i tried this **** and my s5 is turned to trash. Do not try belive me.
Best Wishes...
SM-N930F
Y4HY4 said:
I advise you DO NOT make move to unlock bootloader on locked device.Like install 900f roms 900f kernels. Because i tried this **** and my s5 is turned to trash. Do not try belive me.
Best Wishes...
SM-N930F
Click to expand...
Click to collapse
Why are you advising those with a locked bootloader not to unlock it? If you have the right emmc, there are like 4 different methods to do it. It's simple!

Using an S4 as emergency phone, and I need slight guidance for rooting & recovery

Hello
My LG V10 came across the famous bootloop issue, and I shipped it to LG. In the meantime, I am using an old S4 that was saved for emergencies like this one. It is running 4.4.4, I337UCUFNJ4, and I rooted it with Kingoroot.
I understand that it should OTA to 5.1 in pronably a day or 2 if I check for a software update; it sat turned off since 2014, so it did not receive anything.
1. Do I OTA and reroot?
2. Can I manually jump to 5.1?
Ultimately, I would like to install TWRP and the Blissrom or some other ROM, but I don't want to take an OTA that may screw me up for later. I read that there's a loki thing that will prevent future installations of recovery or something like that. I realize that I will be using a short time (2-3 weeks), but I would like to leave it rooted and with a good ROM.
Thank you
The bootloader is locked so that means TWRP cannot be flashed to the phone and the phone will only run custom ROMs based off a stock Samsung ROM.
OTA updates will not work if the phone is rooted.
audit13 said:
The bootloader is locked so that means TWRP cannot be flashed to the phone and the phone will only run custom ROMs based off a stock Samsung ROM.
OTA updates will not work if the phone is rooted.
Click to expand...
Click to collapse
I'm confused or perhaps you are misinformed. I have seen a lot of ROMs for this device including Blissrom and many others. All od them get flashed through twrp or Safeway or aome name like that.
You mean safestrap?
Maybe you are thinking of the non-AT&T models of the s4 that work with custom ROMs such as Lineage and Validus. Only the AT&T version of the s4 has a locked bootloader, starting with Android 4.3 and up.
There has never been an sgh-i337 s4 with a locked bootloader than can run TWRP. Same goes for the AT&T sm-n900a note 3 with a locked bootloader.
audit13 said:
You mean safestrap?
Maybe you are thinking of the non-AT&T models of the s4 that work with custom ROMs such as Lineage and Validus. Only the AT&T version of the s4 has a locked bootloader, starting with Android 4.3 and up.
There has never been an sgh-i337 s4 with a locked bootloader than can run TWRP. Same goes for the AT&T sm-n900a note 3 with a locked bootloader.
Click to expand...
Click to collapse
But there's a forum dedicated to AT&T development full of roms here on xda.
Yes, there is a full section but you need to look at the ROM requirements. Some of these ROMs were developed before AT&T pushed out an OTA update that locked the bootloader. Other ROMs are made for the non-AT&T s4 such as the sgh-i337m and gt-i9505.
You will not see any ROM that is not based off a stock Samsung ROM that can be installed onto an AT&T s4 that has a locked bootloader. Also, you will not see any version of TWRP/CWM/Philz that can be installed onto an AT&T s4 that has a locked bootloader. Same goes for the AT&T sm-n900a.
I understand your skepticism and appreciate your posts as we are all here to learn from each other.
https://forum.xda-developers.com/showthread.php?t=2785166
https://forum.xda-developers.com/galaxy-s4-att/help/ez-unlock-bricked-phone-galaxy-att-s4-t3703235
https://forum.xda-developers.com/galaxy-s4-att/help/help-installed-chainfire3d-phone-doesnt-t3700830
https://forum.xda-developers.com/galaxy-s4-att/help/samsung-galaxy-s4-sgh-i337-ok2-locked-t3458353
Thanks for the clarification. So how do I know if my bootloader is locked? If I took that ota update that messed things up?
The bootloader becomes locked when the phone is updated to Android 4.3 or newer. I think it needs to be on the MDL bootloader to be unlocked. Anything beginning with an "N" or "O" means that the bootloader is locked.
Thanks audit. And I assume that there's no way to go backwards to a pre-4.3 rom and unlock that bootloader.
So. I'm on 4.44 rooted. Do i remove root and take any ota and reroot? I guess that I'll settle for going as high as possible with the stock rom but rooted with the ability to disable some of the bloatware.
How can I proceed?
In those links that you mentioned, it states that we can flash debloated TouchWiz roms that might be better than stock. Is that right? So can I do that?
You will need to install safestrap to flash a custom ROM. The debloated ROMs must be based off a ROM that is designed for the AT&T s4.
I recommend reading through this thread: https://forum.xda-developers.com/showthread.php?t=2616221
Audit... I odined back to nb1, rooted, and used flashify to get to rooted stock oc3.
How can I get to ok3? And should I leave ota services frozen so as to not ruin and loose root?
OTA will not work with a rooted phone.
Maybe this will help: https://forum.xda-developers.com/showpost.php?p=56453108&postcount=2
I don't have an sgh-i337 so I can't tell you how to get back to a completely stock ROM to get OTA updates. I have the sgh-i337m which is the Canadian version of the s4 without a locked bootloader.
I wrote a guide and FAQ revolving around the MDL bootloader here (if anyone cares to read it):
https://forum.xda-developers.com/galaxy-s4-att/general/how-to-one-guide-to-mdl-bootloader-t3584122

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