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Can a root device be upgraded?

Hi all
A week ago a rooted my Samsung Galaxy S6 device following this post: http://forum.xda-developers.com/galaxy-s6/general/root-pingpongroot-s6-root-tool-t3103016
All was OK. At that point my device is using the Android Version: 5.0.2
The question I have is that now the version 5.1.1 (Lillipop) has been released, I would like to know if my rooted device can still be upgrading when the new version is released in my region (Mexico) by the phone provider. (Telcel). In case it cannot be updated automatically, I guess I will need to do it manually or unroot my device. In that scenario, Does someone know a good tutorial how to do that?
Regards!

@LesthadMK, sure you can update rooted devices. But it may not be possible via OTA update. You will have to download the full firmware and install it manually.
Because root makes changes to system partition, OTA fails when you have rooted. If you unroot and flash stock recovery and kernel back, then OTA may work. Otherwise, simply flash the full firmware, in .tar format using Odin software, and you're good.
It's good to have full firmware saved on PC anyway, as if in case you brick your device, you can fix it by installing your device's firmware manually.
If you need help with 5.1.1 firmware installation on your s6, let me know the build no. of your device.. I will guide you to page you need to look at.

Thanks for the help. I have download Odin in case I need to do it manually.
Also, mentioned that yesterday I read an article saying that using the Samsung software "Smart Switch" in an rooted device will upgrade the device to the newest version (which I don't know if it it's true or not) Any way this is the link I found:.... Well seems since I'm newby I cannot post some external links. So just google it as: How to Use Smart Switch to Update Your Galaxy S6—Even It's Rooted.
By other hand, this is the build number for my device: G920IDVU1AOE3, so if you can help me to know how to upgrade that version that would be very helpful
Regards!

Flashing more recent stock rom from sammobile

Hi
Apologies for what is quite a basic question for I'm just trying to get things straight in my head before proceeding.
I have a UK retail S7 G930F, current running stock
Build G930FXXU1DQC4
Baseband G930FXXU1DQC2
Despite the fact this build only has Android security patch level February 2017, and the latest build is from 2018, my device and Smart Switch insist I am up to date, I want to actually make this the case while remaining on stock firmware.
I have used Odin to flash Galaxy phones before but not since I had a Note 2 and Note 3 so I'm a little rusty.
I have Odin 3.13.1 and the zip download from sammobile for build G930FXXS2DRAA for the same CSC region I'm currently on which is XEU.
All the guides for Odin flashing say to only use the AP file and option in Odin. However as my BL, CP and CSC will all be older as well, and I'm simply going from stock to stock can I (or should I) also flash these parts as well?
Thanks.

I need more information. 6 mm and 7 nougat use the same BL and require no upgrade where if you were on lollipop somehow you would need the bl. Please DO NOT run off and start flashing things like BL without help from here first. I have bricked a samsung device so bad I had to replace the motherboard, so I learned the hard way.

Both current firmware and the one I intend to flash are Android 7, the new one is just a much more recent build with a more up to date security patch level.
My current firmware, as shipped (or possibly updated OTA a long time ago)
https://www.sammobile.com/firmwares/galaxy-s7/SM-G930F/XEU/download/G930FXXU1DQC4/127501/
My intended firmware that I plan to flash
https://www.sammobile.com/firmwares/galaxy-s7/SM-G930F/XEU/download/G930FXXS2DRAA/205600/
Despite the fact that sammobile says the newer one is available in Smart Switch, it doesn't show any updates when I connect my device to my PC with Smart Switch.

y2kgecko said:
Both current firmware and the one I intend to flash are Android 7, the new one is just a much more recent build with a more up to date security patch level.
My current firmware, as shipped (or possibly updated OTA a long time ago)
https://www.sammobile.com/firmwares/galaxy-s7/SM-G930F/XEU/download/G930FXXU1DQC4/127501/
My intended firmware that I plan to flash
https://www.sammobile.com/firmwares/galaxy-s7/SM-G930F/XEU/download/G930FXXS2DRAA/205600/
Despite the fact that sammobile says the newer one is available in Smart Switch, it doesn't show any updates when I connect my device to my PC with Smart Switch.
Click to expand...
Click to collapse
I get that a lot. I upgraded my s7 to latest n release today and it worked ok.

So, do I just flash AP or everything?

y2kgecko said:
So, do I just flash AP or everything?
Click to expand...
Click to collapse
You need to flash all 4 files: BL / AP / CP / CSC
I do recommend that you flash CSC* and not HOME_CSC*. That way you will reset the phone to factory defaults and it will be ready for future OTA updates.
Backup your files first that you think are important and then start from scratch to configure the phone, install your apps, update the ones on the phone.

Any way to downgrade from Nougat to MM without losing FP Sensor,Haptic Feedack&Camera

Any way to downgrade from Nougat to MM without losing FP Sensor,Haptic Feedack&Camera
I recently purchased a new S7 not realizing that it was equipped with a Nougat OS. I would like to restore my current phone to the new one, but my current phone runs on MarshMallow. After restoring the backup, my new phone has no haptic feedback, no fingerprint sensor with "an error has occurred with the fingerprint sensor. if this message appears repeatedly, restart your phone" message and the Camera doesn't work.
I'm sure it has something to do with bootloader N using MM. Even restoring Stock Marshmallow firmware (Including BL) on the new phone removes these functions. Does anyone have any ideas on how I can get these to operate?
My current phone has
Bootloader Version: G930W8OYA2APK3 (MM)
Baseband and PDA Version: G930W8OYA2API1 (MM)
When I restore my old phone to the new one, it ends up with
Bootloader Version: G930W8OYA2BQK4 (N)
Baseband and PDA Version: G930W8OYA2API1 (MM)
EDIT: Just tried the Nougat firmware with MM Bootloader. All of the functionality is present.
Bootloader Version: G930W8OYA2API1 (MM)
PDA Version: G930W8OYA2BQK4 (N)
Just restored old backup with MM bootloader (Boot, Data, System only).
No Fingerprint Sensor or Camera.
BTW, ignore the HAPTIC FEEDBACK portion of this post. I believe it is working.
Any help with this matter would be greatly appreciated.

Not possible to downgrade since the bootloader block you from flashing lower version of that. You may try to flash without BL, but your phone will be malfunction

Thank you for your reply. I don't think I'll be able to get the fingerprint wizard to work but having a functional camera would be a necessity. From the System/Priv-App folder I copied the SamsungCamera5 (from MM) and the SamsungCamera6 (from N) onto an SD Card. I guess I can try to play around with them to see if either will work, but I don't think they will since my restored backup should already have SamsungCamera5 and the SamsungCamera6 apk probably isn't compatible with MM. Kinda disappointing that I'll have to continue to use my old phone with a broken screen instead of the brand new one I purchased.

Sleaze0 said:
Thank you for your reply. I don't think I'll be able to get the fingerprint wizard to work but having a functional camera would be a necessity. From the System/Priv-App folder I copied the SamsungCamera5 (from MM) and the SamsungCamera6 (from N) onto an SD Card. I guess I can try to play around with them to see if either will work, but I don't think they will since my restored backup should already have SamsungCamera5 and the SamsungCamera6 apk probably isn't compatible with MM. Kinda disappointing that I'll have to continue to use my old phone with a broken screen instead of the brand new one I purchased.
Click to expand...
Click to collapse
do not flash AP from a firmware set made prior to the bootloader youre on, it will more than malfunction, itll probably brick
i went back and read all the tl : dr stuff and saw that you seem to have got it working, oddly enough. The camera issue is likely the kernel

Thanks for the info on the thanks button. I've just about given up trying to get Marshmallow to work properly on this phone. Looks like it'll take weeks to configure my new Nougat phone to be similar to the three years of tweaks I've made to my old MM one. Oh well, first world problems I guess.

As others have pointed out, you can't use Odin to successfully flash a ROM with a bootloader that is earlier (in version) than the bootloader you have installed. The "gatekeeper" is Odin, however, not the bootloader.
Though I haven't tried it, it is my understanding that there is a way around this. Install TWRP, and use it to install a custom ROM which uses the version of bootloader that you want/need. Once the bootloader has been rolled back, you can use Odin to reinstall Nougat (or whatever). I don't know whether this might require a particular build of Odin, but I doubt it

Droiderat said:
As others have pointed out, you can't use Odin to successfully flash a ROM with a bootloader that is earlier (in version) than the bootloader you have installed. The "gatekeeper" is Odin, however, not the bootloader.
Though I haven't tried it, it is my understanding that there is a way around this. Install TWRP, and use it to install a custom ROM which uses the version of bootloader that you want/need. Once the bootloader has been rolled back, you can use Odin to reinstall Nougat (or whatever). I don't know whether this might require a particular build of Odin, but I doubt it
Click to expand...
Click to collapse
i cant even begin to imagine how/why that would work. the bootloader doesnt really care what ROM you install, its the other way around. The ROM being installed has to be compatible with the bootloader. So, installing a ROM wouldnt really do anything to the bootloader and therefore wouldnt be able to bypass the lock in knox.

The procedure I outlined apparently works where the custom ROM includes a related bootloader. Thus, when it is installed via TWRP, it replaces both the existing ROM and the bootloader. I know that TWRP can be used to install a bootloader, as I have done it (on a SM-930F). And if the gatekeeper is Odin and not the bootloader itself, then this could work.
As I stated, I haven't tried this, nor have I extensively researched it. I've only read about it, and am passing it along as a possible solution.

This post can be closed since the phone was deemed Lost or Stolen by the carrier, therefore they couldn't unlock it for me to use my SIM card. I've since returned the phone. At least I learned a few lessons for my next one. Mainly, back up the phone when you first get it. Thanks again for all of the feedback.

Question Android 13 back to 12

hello. i get out from the beta, to many problems with apps at the phone.
how can i get back to the last firmware ??

I think that you can downgrade through Odin, but don't forget to backup your personal datas beforehand.

Easiest way is to connect the phone to SmartSwitch on PC. It offers donlwngrade and install latest official software. Be aware that downgrade wipes all data so backup is a must.

Question Unroot device

So, I rooted my device couple of month ago.
Long story short I had a problem and don t have magisk on my phone anymore
I want to unroot my device. But what i have read is that i need the original firmware with the boot.img that came with my phone when I rooted it.
Ihave search my device and the magisk folder got deleted and so I don t have the backup of boot.img that magisk did for me.
If I download the firmware with frija (the baseband is that the version number) can I restore the phone to his original state ?
And is there a way to have the original bootloader back and enable knox again ?
Thanks

When i input the baseband in frija the software let me download the latest version of the software on android 12.
Is it possible to find the original version of the software that came it was android 11

Everything is included in the firmware for reverting back, although not necessarily needed, i would advise for a reset as well. You can do that in one go by flashing CSC instead of HOME_CSC.
About KNOX, forget it, you're done. I haven't rooted a Samsung phone since the 2019, and don't see any reason to anymore, but if you do, i don't see a reason to revert back either since KNOX is out of the question.