Updated guide on how to revert back to Stock ROM? - Nokia 7 Plus Questions & Answers

Hello, does anyone know how to revert back to stock ROM? Any guides? I can't seem to find any guides that aren't few years old.
Also will phone storage be repartitioned to stock values after flashing?
I want to flash newest LineageOS, but want to make sure i can go back in case something goes wrong.

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[Q]Andromeda 3,phoenix unleashed and more..

Here are my doubts: Captivate on 2.2 no root
1)Is andromeda3 and phoenix unleashed based on android 2.2 or 2.3?(recent versions)
2)I used Odin v1.0 to go back to stock,what is the difference betwen Odin 1.0 and Odin 1.7?
3)Are there any other methods to go back to stock, I have read "Use odin 1.0 in case of emergency"?
4)How can I back up my stock rom after root in the case I want to flash back and unroot?
5)Do I need to go back to stock every time I want to flash a different rom?
6)Andromeda3 has a ursa minor kernel do i need this to install there rom or can i just flash the rom without ursa minor?
7)In the phoenix unleashed thread it says to flash there custom rom use odin to go back to stock,does this mean i have to do the whole back to stock+root again?(Staring from scratch in other words)
8)Will flashing rage patch while using andromeda3 or phoenix unleashed mess something up?
I think that's all please put the same number of the question in front of the answer so I know witch answers witch.Thank you in advanced.
Here are my doubts: Captivate on 2.2 no root (Don't doubt the captivate - it can handle it! Isn't autocorrect great?)
1)Is andromeda3 and phoenix unleashed based on android 2.2 or 2.3?(recent versions)
Andromeda3 is 2.2 based, and as much as I can see, so is Phoenix Unleashed.
2)I used Odin v1.0 to go back to stock,what is the difference betwen Odin 1.0 and Odin 1.7?
They're the same program, just different revisions. I can't say what specifically has changed between the two of the, but my guess would be 1.7 would have more features/bug fixes/etc.
3)Are there any other methods to go back to stock, I have read "Use odin 1.0 in case of emergency"?
Going back to stock will consist of using some version of Odin (one-click or otherwise) to reflash the stock rom to your phone
4)How can I back up my stock rom after root in the case I want to flash back and unroot?
From a rom standpoint, there's no need to back up your stock rom, unless you have settings done a specific way you want. Flashing to stock with automatically put you back at a stock, unrooted state. I would recommend doing a nandroid backup from the CWM recovery menu (assuming you have CWM) and copying the EFS folder to a safe location before moving forwards.
5)Do I need to go back to stock every time I want to flash a different rom?
Need to? No. Is it a good idea? There's debate on this, but in general, it's not a bad idea to flash back to stock (relative to where you are - GB/Froyo/Eclair) before flashing a new rom. It will help keep things tidy.
6)Andromeda3 has a ursa minor kernel do i need this to install there rom or can i just flash the rom without ursa minor?
To the best of my knowledge, it is included in the rom - there's nothing to do on your part, as it will flash with the rom.
7)In the phoenix unleashed thread it says to flash there custom rom use odin to go back to stock,does this mean i have to do the whole back to stock+root again?(Staring from scratch in other words)
If you're still on stock Eclair, you do not need to go back to stock. If you're on something else, you will need to go back to stock, but you shouldn't have to root, as most roms now work without being rooted.
8)Will flashing rage patch while using andromeda3 or phoenix unleashed mess something up?
It won't hurt anything - it just covers a security flaw.
I think that's all please put the same number of the question in front of the answer so I know witch answers witch.Thank you in advanced.
jmtheiss said:
Here are my doubts: Captivate on 2.2 no root (Don't doubt the captivate - it can handle it! Isn't autocorrect great?)
1)Is andromeda3 and phoenix unleashed based on android 2.2 or 2.3?(recent versions)
Andromeda3 is 2.2 based, and as much as I can see, so is Phoenix Unleashed.
2)I used Odin v1.0 to go back to stock,what is the difference betwen Odin 1.0 and Odin 1.7?
They're the same program, just different revisions. I can't say what specifically has changed between the two of the, but my guess would be 1.7 would have more features/bug fixes/etc.
3)Are there any other methods to go back to stock, I have read "Use odin 1.0 in case of emergency"?
Going back to stock will consist of using some version of Odin (one-click or otherwise) to reflash the stock rom to your phone
4)How can I back up my stock rom after root in the case I want to flash back and unroot?
From a rom standpoint, there's no need to back up your stock rom, unless you have settings done a specific way you want. Flashing to stock with automatically put you back at a stock, unrooted state. I would recommend doing a nandroid backup from the CWM recovery menu (assuming you have CWM) and copying the EFS folder to a safe location before moving forwards.
5)Do I need to go back to stock every time I want to flash a different rom?
Need to? No. Is it a good idea? There's debate on this, but in general, it's not a bad idea to flash back to stock (relative to where you are - GB/Froyo/Eclair) before flashing a new rom. It will help keep things tidy.
6)Andromeda3 has a ursa minor kernel do i need this to install there rom or can i just flash the rom without ursa minor?
To the best of my knowledge, it is included in the rom - there's nothing to do on your part, as it will flash with the rom.
7)In the phoenix unleashed thread it says to flash there custom rom use odin to go back to stock,does this mean i have to do the whole back to stock+root again?(Staring from scratch in other words)
If you're still on stock Eclair, you do not need to go back to stock. If you're on something else, you will need to go back to stock, but you shouldn't have to root, as most roms now work without being rooted.
8)Will flashing rage patch while using andromeda3 or phoenix unleashed mess something up?
It won't hurt anything - it just covers a security flaw.
I think that's all please put the same number of the question in front of the answer so I know witch answers witch.Thank you in advanced.
Click to expand...
Click to collapse
Thank you this is very informative and what i meant by "Here are my doubts: Captivate 2.2 no root" is that my captivate is on stock 2.2 without root just to be clear.
I got one more question:
Whats is the EFS folder?
Im going to tell you my former situation so you can tell me what I did wrong:
I rooted my phone with super one click at the time
I used rom manager it was also supposed to save a backup of my stock rom
Somewhere in the CWM I was supposed to save the stock rom just in case something went wrong(i thought i did it correctly)
I flashed Cognition everything was great
I wanted to eliminate Cog when i went to CWM to find my back up of stock it didnt work it stayed in Cog
I have read that flashing other roms while having a custom rom isnt recommended that you need to go back to stock first
I was stuck on Cog all i did was update to the most current version
Till last week where i got the guts to use Odin to flash back to stock with some fear i might brick my phone
Now im looking to do it all over but do it right and not mess it up only with different rom
DudeWatsThat said:
Thank you this is very informative and what i meant by "Here are my doubts: Captivate 2.2 no root" is that my captivate is on stock 2.2 without root just to be clear.
I got one more question:
Whats is the EFS folder?
Im going to tell you my former situation so you can tell me what I did wrong:
I rooted my phone with super one click at the time
I used rom manager it was also supposed to save a backup of my stock rom
Somewhere in the CWM I was supposed to save the stock rom just in case something went wrong(i thought i did it correctly)
I flashed Cognition everything was great
I wanted to eliminate Cog when i went to CWM to find my back up of stock it didnt work it stayed in Cog
I have read that flashing other roms while having a custom rom isnt recommended that you need to go back to stock first
I was stuck on Cog all i did was update to the most current version
Till last week where i got the guts to use Odin to flash back to stock with some fear i might brick my phone
Now im looking to do it all over but do it right and not mess it up only with different rom
Click to expand...
Click to collapse
It actually doesn't sound like you did anything wrong - you may just be looking for things in the wrong places. The CWM backup, if I am correct, doesn't create a quick-swappable backup of your stock configuration. My understanding of how the nandroid backup works is that it creates a snapshot of the phone with a particular rom in place, so that if something bad happens, you can flash back to a clean version of that rom, apply the nandroid backup, and you'll be right back in business with your custom rom (Again, that's my understanding - someone more knowledgeable may chime in and give a better/more correct explanation).
If you made a backup using CWM, you should have a folder on your internal SD called "clockworkmod/backup", with a folder that has the date of the backup on it. I would copy that to somewhere safe (like your computer). Once you've done that, and assuming your phone is functioning normally as a phone, I would use a root-level file explorer (root explorer, adb pull command, etc.) to get a copy the folder "/efs" on your computer as well. (Take a look at the link in my signature about XDA terms and acronyms for what the EFS folder is).
Once you've done this, if you haven't already done so, back up your applications with Titanium backup. Then use the Odin one-click to get back to stock 2.1 Eclair. You won't have root access at that point, but that is not a problem. Once you're there, just follow the directions for the rom you want to flash - most will install without requiring the root permissions. The AIO captivate toolbox in the development thread is a good tool if you want something to walk you through the installation process (although it should really only be used on Froyo roms at this point).
PLEASE NOTE - THIS IS EXTREMELY IMPORTANT: If you are going to flash a Gingerbread-based rom (Mosaic, Apex, etc), please read up and follow all directions extremely carefully. Flashing Gingerbread involves flashing the bootloaders on your phone, and if something happens during that portion of the flashing process, you will have a true hard brick - not a clay (recoverable error state), but a phone that you can't use.
jmtheiss said:
It actually doesn't sound like you did anything wrong - you may just be looking for things in the wrong places. The CWM backup, if I am correct, doesn't create a quick-swappable backup of your stock configuration. My understanding of how the nandroid backup works is that it creates a snapshot of the phone with a particular rom in place, so that if something bad happens, you can flash back to a clean version of that rom, apply the nandroid backup, and you'll be right back in business with your custom rom (Again, that's my understanding - someone more knowledgeable may chime in and give a better/more correct explanation).
If you made a backup using CWM, you should have a folder on your internal SD called "clockworkmod/backup", with a folder that has the date of the backup on it. I would copy that to somewhere safe (like your computer). Once you've done that, and assuming your phone is functioning normally as a phone, I would use a root-level file explorer (root explorer, adb pull command, etc.) to get a copy the folder "/efs" on your computer as well. (Take a look at the link in my signature about XDA terms and acronyms for what the EFS folder is).
Once you've done this, if you haven't already done so, back up your applications with Titanium backup. Then use the Odin one-click to get back to stock 2.1 Eclair. You won't have root access at that point, but that is not a problem. Once you're there, just follow the directions for the rom you want to flash - most will install without requiring the root permissions. The AIO captivate toolbox in the development thread is a good tool if you want something to walk you through the installation process (although it should really only be used on Froyo roms at this point).
PLEASE NOTE - THIS IS EXTREMELY IMPORTANT: If you are going to flash a Gingerbread-based rom (Mosaic, Apex, etc), please read up and follow all directions extremely carefully. Flashing Gingerbread involves flashing the bootloaders on your phone, and if something happens during that portion of the flashing process, you will have a true hard brick - not a clay (recoverable error state), but a phone that you can't use.
Click to expand...
Click to collapse
Thanks again
I don't plan on flashing 2.3 roms until the official 2.3 release come out
Theres a Odin that flashes stock 2.2 instead of 2.1 can I use that one instead?
Theres a Odin that flashes stock 2.2 instead of 2.1
Click to expand...
Click to collapse
I wasn't aware that existed - could you please provide a link?
Just to point you in the right direction, at the end of the flashing you're currently doing, what rom do you want to have on your phone?
jmtheiss said:
I wasn't aware that existed - could you please provide a link?
Just to point you in the right direction, at the end of the flashing you're currently doing, what rom do you want to have on your phone?
Click to expand...
Click to collapse
Heres the link http://www.mobiletechvideos.com/blog/?page_id=186
The rom i want to use is either Andromeda3,Phoenix Unleashed or just go back to Cognition 4.5.3 or Cog 5 when its not in Beta.
DudeWatsThat said:
Heres the link http://www.mobiletechvideos.com/blog/?page_id=186
The rom i want to use is either Andromeda3,Phoenix Unleashed or just go back to Cognition 4.5.3 or Cog 5 when its not in Beta.
Click to expand...
Click to collapse
Thanks for the link - good to know about that file.
In my opinion, you would have the best luck going back to stock Eclair (2.1). The reason I say this is because it gives you the cleanest path to getting to the custom Rom you want. 2.1 doesn't have the signed 3e recovery problems that can exist with a 2.2 stock rom, so you'll save yourself a lot of hassle there. Plus, the 2.1 stock rom to custom rom path has been followed hundreds of times on this forum, so it's had the chance to get pretty much all the kinks worked out by this point.
Again, just my opinion.
jmtheiss said:
Thanks for the link - good to know about that file.
In my opinion, you would have the best luck going back to stock Eclair (2.1). The reason I say this is because it gives you the cleanest path to getting to the custom Rom you want. 2.1 doesn't have the signed 3e recovery problems that can exist with a 2.2 stock rom, so you'll save yourself a lot of hassle there. Plus, the 2.1 stock rom to custom rom path has been followed hundreds of times on this forum, so it's had the chance to get pretty much all the kinks worked out by this point.
Again, just my opinion.
Click to expand...
Click to collapse
I would gladly take your advice if it makes everything safer and easier but I upgraded my phone using Kies mini to 2.2 so will using odin to flash back to stock 2.1 cause any problems since its a downgrade from 2.2 to 2.1?
DudeWatsThat said:
I would gladly take your advice if it makes everything safer and easier but I upgraded my phone using Kies mini to 2.2 so will using odin to flash back to stock 2.1 cause any problems since its a downgrade from 2.2 to 2.1?
Click to expand...
Click to collapse
You shouldn't have any problems with the 2.2-2.1 transition if you use the one click Odin back to stock. The dangerous move is going from 2.3 to any other version, as that involves flashing the bootloaders.
For maximum safety, just include these items on your checklist prior to starting:
- Nandroid backup from CWM
- EFS backup (copying that folder to a safe location)
- Titanium backup of your apps (copy titaniumbackup folder to safe place)
- Back up pictures/music/other items you want to save
Once you've done that, use the one-click Odin to get to a clean stock. From there, you should be good to go with flashing a custom rom. Just make sure you read and follow all directions in the custom roms' post. (If there's nothing there, follow this guide.)
jmtheiss said:
You shouldn't have any problems with the 2.2-2.1 transition if you use the one click Odin back to stock. The dangerous move is going from 2.3 to any other version, as that involves flashing the bootloaders.
For maximum safety, just include these items on your checklist prior to starting:
- Nandroid backup from CWM
- EFS backup (copying that folder to a safe location)
- Titanium backup of your apps (copy titaniumbackup folder to safe place)
- Back up pictures/music/other items you want to save
Once you've done that, use the one-click Odin to get to a clean stock. From there, you should be good to go with flashing a custom rom. Just make sure you read and follow all directions in the custom roms' post. (If there's nothing there, follow this guide.)
Click to expand...
Click to collapse
Eh i got it into download mode and i pressed start on odin but i think its stuck did i have to root first and then use odin im kinda scared right now
Edit:its showing a phone a warning sign and a Pc like connect phone to pc
I know it's nerve racking, but as long as you weren't on a Gingerbread rom, you'll be ok. Rooting isn't required - Odin is automatically "rooted".
A quick questions while you're waiting - When you plugged it in, did Odin recognize a phone was attached (did a yellow text box show up saying COM:4 or something similar)? It should look similar to the attached file.
jmtheiss said:
I know it's nerve racking, but as long as you weren't on a Gingerbread rom, you'll be ok. Rooting isn't required - Odin is automatically "rooted".
A quick questions while you're waiting - When you plugged it in, did Odin recognize a phone was attached (did a yellow text box show up saying COM:4 or something similar)?
Click to expand...
Click to collapse
Eh yes its i managed to trouble shoot it and its reboting everything is ok and yes it did show a yellow text box as of right now i just need to pop in the sym and reboot i have succesfully flashed 2.1 i just need to root and get CWM thru Room manager correct me if im wrong.
I'm not that familiar with Rom manager, but the general idea of getting root (maybe through the super one click root application, or from the CWM recovery menu) and installing CWM recovery (however you need to accomplish that) is the right first steps to getting to a custom rom.
Good luck with the flashing process.
jmtheiss said:
I'm not that familiar with Rom manager, but the general idea of getting root (maybe through the super one click root application, or from the CWM recovery menu) and installing CWM recovery (however you need to accomplish that) is the right first steps to getting to a custom rom.
Good luck with the flashing process.
Click to expand...
Click to collapse
I just rooted now all I need is CWM and thank you for all your help!
Glad it worked out. Don't be afraid to ask more questions in the future, as a reply to a question you've asked could help someone else with the same question out.
Everything you asked about could have been answered by doing some searches and reading up on these items. Invest the time instead of just posting.
Miami_Son said:
Everything you asked about could have been answered by doing some searches and reading up on these items. Invest the time instead of just posting.
Click to expand...
Click to collapse
I did ALOT of searching before thinking of posting this,the reason I did it was because most of the post are from 2010 and I had doubts on if I should use those methods or if there where new ones.This is the Q&A sub-forum right?I did just that ask questions.

[Q] Newcomer to the P1000 Galaxy Tab. Put a 'cube out of his confusion.

Okay. So, I've just acquired a Galaxy Tab off eBay. It's on it's way to me, so I thought I'd burn up a few cycles and go download some goods for flashing as soon as I get it.
The setup: ROM version is Gingerbread. Assume Stock ROM. Model is P1000 (Unlocked GSM).
The question is this. I am completely confused as to what I need to do, and I'd like someone to point me in the right direction. With other devices, I would just root, install custom recovery and voila. Non-stock device. Does this same rule apply with the Galaxy Tab, or is it a new ball game?
Basically, what is the easiest way of getting a custom ROM onto my Galaxy Tab? Do I need to use ODIN and co? Or can I do it all via recovery? Is there any n00b guides that explain installing your first ROM?
I don't want to jump through hurdles that I could have avoided. So, that's why I'm asking you for help. Put me out of my confusion, get a +1 thanks in return. Sounds good, no?
Thanks again. Your help is appreciated.
good day sir.
basically is the same with otherdevices,
root it, install clockworkmod, download and install roms
you will need to flash via odin first because stock rom of gtp1000 have limited options in the recovery mode.
after that, all flashings can be done vie clockworkmod recevery... for your convenience search for these ff. keywords:
overcome kernel
overcome rom
zergrush
cm9 rom
humberos.
no need for thanks buton, i just want to ask you to refrain posting posts in the development forums if you think your post will not contribute to the development, too many assholes there beating each other up and flooding the forum of bullshits.
thanks.
Alright, thanks for the explanation, I appreciate it! Seems to be making sense now...
So, basically, with any ROM I flash, I must use ODIN to flash the kernel? Or will the ROM take care of that? I heard the kernel is mixed in with the recovery system, so I'm a little unsure as to what the go is.
no u just need o flash a kernel with clockworkmod recovery and all succeding flashings be it rom, kernel or anything else canbe done using clockworkmod recovery. of course there are exceptions if the developer specifically requires u to flash via odin
You should follow the Overcome Guide for your first flash, it is comprehensive and easy peasy, lemon squeezy
There are some pics missing in the linked page, I have a cached copy from google that you can refer to also.
GL.
Make back up or the original or current rom
I would like to flash my tab with a custom rom, but I also want to be able to revert or go back to the original rom. My question is how you back up your current or original rom so you could restore it back to its original condition? CMIIW but Titanium back up only back up the apps and stuffs but not the rom, or is it?
ChevanLemon said:
I would like to flash my tab with a custom rom, but I also want to be able to revert or go back to the original rom. My question is how you back up your current or original rom so you could restore it back to its original condition? CMIIW but Titanium back up only back up the apps and stuffs but not the rom, or is it?
Click to expand...
Click to collapse
Please do not hijack my thread. You should make another thread for that - and that's what CWM is used for - making backups!

SafeStrap Backup for ND3 Android 4.4.2 Stock Firmware

I made a backup of my stock ND3 Android 4.4.2 while helping someone restore their stock ROM. I know ND3 stock firmware isn't available yet (and perhaps never) but if you ever need to go back to stock and didn't make a backup, you can use this to get stock firmware back. You probably don't need this since you can use NCE ROM but just in case.
This does not include any bootloader/modem/etc, just system and data but should be enough to get you back on track.
http://stockroms.net/file/GalaxyS5/SM-G900A/SafeStrapBackup/4.4.2/KOT49H.G900AUCU2AND3.zip
Unzip and put under /TWRP/BACKUPS/blahblah directory.
If you don't have blahblah directory, just make backup of your current cache and will create one.
You can also follow this video if you just don't get it:
zedomax said:
I made a backup of my stock ND3 Android 4.4.2 while helping someone restore their stock ROM. I know ND3 stock firmware isn't available yet (and perhaps never) but if you ever need to go back to stock and didn't make a backup, you can use this to get stock firmware back. You probably don't need this since you can use NCE ROM but just in case.
This does not include any bootloader/modem/etc, just system and data but should be enough to get you back on track.
http://stockroms.net/file/GalaxyS5/SM-G900A/SafeStrapBackup/4.4.2/KOT49H.G900AUCU2AND3.zip
Unzip and put under /TWRP/BACKUPS/blahblah directory.
If you don't have blahblah directory, just make backup of your current cache and will create one.
You can also follow this video if you just don't get it:
Click to expand...
Click to collapse
Is it possible or can you do the same for ANG3? I fixed my phone using your backup three times. ?
nice, gonna debloat this and remove the carrier iq from it and some system stuff and use it. battery life sucks on all the roms for at&t right now. if i cant get more out of this stock rom im jumping back on my note 3.
This will still work being on NCE base correct?
I used this and it messed up the finger print scanner. Any ideas? It says to reboot to fix, but it doesn't fix it.
i have been looking for 2hrs...where can I download safestrap????? this is driving me crazy!
randybellis said:
i have been looking for 2hrs...where can I download safestrap????? this is driving me crazy!
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=53659493

Need to go back to stock on Pie

Still on April patch, with TWRP, need some guidance on what steps to take before I screw something up. I think I installed the recovery on b partition or something. I saw links to all the stock stuff around here before, just unsure in which order to flash things or if there's something more that I need to do. There's a thread on how to go back to stock on Oreo, but would it work for Pie too? https://forum.xda-developers.com/nokia-8/how-to/guide-restore-nokia-to-stock-t3867646
Any help please?

Slower over time until I flash stock ROM

A few weeks/months after installing a ROM it starts to get slower over time. The only way I've found to fix it is going back to stock ROM and then back to a custom ROM. It happened with different ROMs.
Any idea of why this could happen or how I can fix it?
I'm thinking it may be related to some partition, because even a clean flash doesn't work. And I have to go back to stock ROM before flashing a new ROM.
My previous ROM was Pixel2ROM. Current Pixel Experience. I had to go back to stock before flashing this.
Could you help me? Any idea why is this happening?

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