Galaxy M31 Help with applying a rom - Samsung Galaxy M31 Questions & Answers

I wanted to root (and apply a rom on) my Galaxy M31 but either the few tutorials out there confused me or I coudnt find anyone to help with my questions.
I heared I should apply a rom first and after that root my phone. Is that correct? (cause i think so ill skip questions for rooting)
My phone is currently on Android 11 is that a problem?
There is only a LineageOS version for Android 10 is that a problem? (or is there maybe another OS that has Android 11 Support for my device)
How do I backup my device and what can not be.
And how do I apply the rom and root it?
Is it easy to update the firmware on a phone with a custom rom which is rooted?
Its a phone from the eu and I can unlock the bootloader in the dev settings

Related

A few Questions from a Noobie

Hi, im new to Note 5 Dev. and been out of the loop since it was released. i had a Sony Xperia play and a Galaxy s3 before and know how to do the basic stuff to do custom roms and flash stuff etc. to those Phones. But a Note 5 is different, running on Lollipop, having EFS partition stuff and OEM unlock Stuff. i just want to ask a few questions to make sure i don't do something stupid (i already did some of the research for answers on some of this for a few days now and some are Informative and Awesome, but a little outdated) so tnx in advance kind People :fingers-crossed:
My Device: SM-N920C (UAE)
Android Ver: 5.1.1 (Lollipop) Stock
Questions:
1.) Can i Revert back to 5.1.1 (lollipop) stock/ [Downgrade] , IF i decided to update to Nougat Stock?? (just curious ) and if yes, can you kindly link me to a process? if not, then that's fine too :laugh:
2.) Do you have to Enable OEM unlock if Updating Stock (in my case Nougat)??
I red somewhere on Magisk thread here on XDA that it can Grant Root Access to 5.0+ . If so, installing TWRP and Flashing Magisk on 5.1.1 involves Enabling USB Debugging and OEM Unlock.
3.) Do i have to Enable OEM Unlock Forever now? cause i saw some threads says that if you disable it, you will have a bootloop or a soft brick and will have to Flash Stock again and repeat. (don't really have a problem with it being Enabled, but the other people in Tutorials , Vid. Tutorials and Thread Posts just mentions "Enable it". And never really says after the process is done u can Disable it and stuff.), just want to have that information, cause i Understand that OEM is a LOCK that Even if someone steals your phone and has a lock in it. they can't just Flash a Stock Rom on it to Unlock it. [great feature] :fingers-crossed:
4.) if i have a Custom Recovery and Rooted my phone ver. 5.1.1 successfully, can i still Unroot it and go back to Stock 5.1.1?? also applies to other Versions of android. EX. nougat Stock then i root it, will i still unroot it and go back to stock?
5.) Do you need to be in a Specific Version of android to use the Custom Roms?? i mean i'm in android 5.1.1 [if rooted], can i flash a Nougat Custom Rom or a s8 port etc.?? or do i need to be in Stock Nougat > Root it > then flash Custom Nougat Roms?
That is all, Sorry if all the Questions are Freakin Long Shahaha, i just want to be specific so all the people who are also newbies can understand the questions and have answers. Tnx again for the people who have the patience to read and answer these questions. :highfive:
shadowhog006 said:
Hi, im new to Note 5 Dev. and been out of the loop since it was released. i had a Sony Xperia play and a Galaxy s3 before and know how to do the basic stuff to do custom roms and flash stuff etc. to those Phones. But a Note 5 is different, running on Lollipop, having EFS partition stuff and OEM unlock Stuff. i just want to ask a few questions to make sure i don't do something stupid (i already did some of the research for answers on some of this for a few days now and some are Informative and Awesome, but a little outdated) so tnx in advance kind People :fingers-crossed:
My Device: SM-N920C (UAE)
Android Ver: 5.1.1 (Lollipop) Stock
Questions:
1.) Can i Revert back to 5.1.1 (lollipop) stock/ [Downgrade] , IF i decided to update to Nougat Stock?? (just curious ) and if yes, can you kindly link me to a process? if not, then that's fine too :laugh:
2.) Do you have to Enable OEM unlock if Updating Stock (in my case Nougat)??
I red somewhere on Magisk thread here on XDA that it can Grant Root Access to 5.0+ . If so, installing TWRP and Flashing Magisk on 5.1.1 involves Enabling USB Debugging and OEM Unlock.
3.) Do i have to Enable OEM Unlock Forever now? cause i saw some threads says that if you disable it, you will have a bootloop or a soft brick and will have to Flash Stock again and repeat. (don't really have a problem with it being Enabled, but the other people in Tutorials , Vid. Tutorials and Thread Posts just mentions "Enable it". And never really says after the process is done u can Disable it and stuff.), just want to have that information, cause i Understand that OEM is a LOCK that Even if someone steals your phone and has a lock in it. they can't just Flash a Stock Rom on it to Unlock it. [great feature] :fingers-crossed:
4.) if i have a Custom Recovery and Rooted my phone ver. 5.1.1 successfully, can i still Unroot it and go back to Stock 5.1.1?? also applies to other Versions of android. EX. nougat Stock then i root it, will i still unroot it and go back to stock?
5.) Do you need to be in a Specific Version of android to use the Custom Roms?? i mean i'm in android 5.1.1 [if rooted], can i flash a Nougat Custom Rom or a s8 port etc.?? or do i need to be in Stock Nougat > Root it > then flash Custom Nougat Roms?
That is all, Sorry if all the Questions are Freakin Long Shahaha, i just want to be specific so all the people who are also newbies can understand the questions and have answers. Tnx again for the people who have the patience to read and answer these questions. :highfive:
Click to expand...
Click to collapse
1)If you flash stock 7.0 on your device if available then its hard to revert to back to stock 5.1.1 as there is thread in Question&Answers section about downgrading from 6.0.1 to 5.1.1 but many are unsuccessful(I have successfully downgraded from 7.0 to 6.0.1 but Cant confirm about 5.1.1 as google has changed many security policies in updates versions like 6.0.1 or 7.0 which will block your bootloader to downgrade easily/Issue you will face like lossing of baseband or corrupt imei which will block you from receiving network signal)
2)Yes its very important to enable Oem unlock and usb debugging while flashing any stock firmware using odin to avoid DM-Verity/SW Check Fail/Custom Binary blocked by FRP like issues which are hard to solve enough OR you will might hard brick your device which will be difficult to make it live again( AFAIK to flash TWRP or Any root access using odin there is instruction to enable Oem Unlock before flashing always remember it as a essential step before flashing anything using odin)
3)Yes once you enable Oem unlock for purpose of modification of your device, it needs to be unlocked or even its enabled by default to overcome reported issue like infinite bootloop or Many i mentioned in my 2nd Post And Oem unlock allows your bootloader to be customised by flashing mods or roms which is by default locked so that you could not easily modify your device as well as to avoid further modification issues
4)If you choose to stay at 5.1.1 and rooted your device with installed TWRP then yes you can unroot it by flashing 5.1.1 using odin( In case your on 6.0.1 or Even on 7.0 you can unroot your device with the same process but here to remind you that you need to flash stock 6.0.1 or 7.0 respectively version on which you rooted your device So if you will try to unroot it by flashing 5.1.1 again while your on 7.0 rooted device then again here downgrade issue which will probably give you mentioned error as a result)
5)To use custom nougat based roms or any S8+ port based on 7.0 you should atleast upgrade your bootloader and modem to 6.0.1( If your rooted on 5.1.1 and try installing nougat roms then your device will not boot as your using old bootloader, so upgrade bootloader or modem either to 6.0.1 or you can update whole system to 7.0>root>install TWRP>flash custom nougat based roms or s8+ ports afterall choice is your as if you want to upgrade only BL and Modem to 6.0.1 or want to upgrade system with BL and Modem to 7.0, i will mention here is BL and Modem for 7.0 are also available to flash you can find those on dr.ketan rom n10 installation instruction section in Samsung galaxy note 5>Android development>Dr.ketan Rom N10 instead of whole system update but Flashing Stock full firmware is always recommended for good reception and avoid glitches)
I think i have tried to fulfil all of your queries as far possible by myself
Regards,
AssassinCreed-Xda Developers
Too bad about the answer to the 3rd question, that feature would've been nice to have. but oh well. shahahaha
~Ooh!! i have a follow up question regarding your Answer to the 4th question. Can i also flash other Countries Stock firmware?? for example: mine is Stock 5.1.1 [UAE] can i flash Stock 5.1.1 [USA] or other Country variants?? [of course unlocked bootloader] , i searched again here for people who did that and for some reason they encounter Errors and Unable to revert back to their Original Stock Firmwares.
@AssassinCreed Thank you. yup, clear cut answers. Thank you!! :victory: :victory:

Unlock and Root P9 EVA-L09C432B378

Sorry for my noobish question, but i just buy today an old stock rom P9 and want to make a complete custom and I read much but want to be sure about 2 or 3 things
I have read about unbranded phone, how can I know that
is the procedure to root and install TWRP is the same with my firmware and 6.0 rom, because I find a lot of tutorial about 6.0 root but none for 7.0
if yes, I have to unlock bootloader, root and install TWRp and that'it???
that's my first Huawei and I'm on Samsung since too much time
thank's for the help
It's seem that 7.0 rom have big drain...Is 6.0 is less drain or have I to install different kernel to solve it????

I need help !!!!!

I have a T-Mobile Samsung Galaxy Note 4 sm-910t with Marshmallow 6.0.1. I've been trying to root it, put a custom recovery on it, and upgrade the OS. Every single YouTube video I've watched and provided links, every website, every forum, and everything I've downloaded that's supposed to be specifically for my device has failed. What's the issue ? I researched, and was assured that the bootloader is unlocked (that's why I specifically bought it). Can anyone help ?
The best way to root your phone and unlock bootloader is CF-auto root. Download it,put phone in downloaded mode and flash it from Odin. Then ,when you do that,install custom Rom and flash magisk 18.0 from TWRP recovery.
Cf auto root is the best way and easiest way to do that.

Issues with unlocking WW version

Hello All,
First of thanks for writing all the helpful guides to unlock and root the RogPhone. I just got my new Rogphone 3 and I am trying to unlock the bootloader to root it and install Xprivacy mods to have a better control over of my privacy. Being a first timer I had certain questions that I wanted your answers on.
1. I am running software version WW_17.0823.2009.99.
2. I have unlocked my bootloader. That means I will not get OTA updates. Is there a way to side load and update these fixes?
3. How is ROM support for Rogphone in general? I get that this phone is relatively new and it will take some time to get other ROMs but I was wondering about the general trend
OTA updates not possible once bootloader is unlocked.
However, thereafter updating to the latest WW firmware is easy. Just download latest WW FW on to the root of Internal Storage folder of your phone (as is, don't change name); this file should be detected automatically and prompt you to update.
Custom ROM development for ROG3 is unfortunately non-existent at the moment. I hope this changes soon.
Ah! did not know this trick! Can I also use the TWRP to flash it? Will it be the same?
I am not sure about flashing WW .zip updates via TWRP on Android 10 (I don't think it's possible) - It's better to enquire in this forum's TWRP thread @ Captain_Throwback.

Question Error when trying to downgrade from android 13 to android 11

Unhappy with android 13, but getting "CHECK FAIL(BOOTLOADER) DEVICE 5. BINARY: 3" in ODIN when trying to flash stock Android 11.
Boatloader is unlocked. Is there any way around this or am I stuck with 13 ?
Regards Magnus
It is not possible to return to the previous version of the bootloader.
You have two solutions:
1. stay with the current firmware.
2. you flash TWRP and upload a custom ROM or custom stock ROM with android 11 ( if someone built it).
In the latter case, you will lose some features of the phone from the original firmware, but gain other properties of the custom ROM.
ze7zez said:
It is not possible to return to the previous version of the bootloader.
You have two solutions:
1. stay with the current firmware.
2. you flash TWRP and upload a custom ROM or custom stock ROM with android 11 ( if someone built it).
In the latter case, you will lose some features of the phone from the original firmware, but gain other properties of the custom ROM.
Click to expand...
Click to collapse
OK suspected that. Thx

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