Go back to stock kernel? - Samsung Galaxy S7 Edge Questions and Answers

Hey guys
I have flashed a custom kernel but i want to switch back to stock kernel now, is there any way without wiping?
Thanks!
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I want to know this as well!
Sent from my SM-G935F using Tapatalk

If you are on a custom rom with stock kernel just flash rom again, no wipe needed, if on official try or ask for somebody to ectract kernel from rom, next time make a backup vedere flashing or use app like synapse can help in back up only kernel
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stremax said:
If you are on a custom rom with stock kernel just flash rom again, no wipe needed, if on official try or ask for somebody to ectract kernel from rom, next time make a backup vedere flashing or use app like synapse can help in back up only kernel
Sent from my SM-G935F using XDA-Developers mobile app
Click to expand...
Click to collapse
I am on stock and i have a backup but it is not that updated. I have a full backup and also i have the original stock rom downloaded from sammobile so... is there any way to extract the kernel from there?
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Try this guide, but be careful or ask in Q&A section if someone can do for you
http://forum.xda-developers.com/showthread.php?t=1768446
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stremax said:
Try this guide, but be careful or ask in Q&A section if someone can do for you
http://forum.xda-developers.com/showthread.php?t=1768446
Sent from my SM-G935F using XDA-Developers mobile app
Click to expand...
Click to collapse
I have extracted boot.img from the stock rom i have installed on my S7, so if i use Flashify to install that boot.img, will i get back the stock kernel or also i am changing another thing? I am not sure if this boot.img is the kernel itself, i am reading many topics but no one is really clear.

The boot.img contains the kernel and ramdisk
according to this old guide
http://forum.xda-developers.com/showthread.php?t=443994
You can flash .img with TWRP too, just select "flash .img" option in install menu since I don't remember if flashify can flash image or boot file properly
Just try at your own risk
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stremax said:
The boot.img contains the kernel and ramdisk
according to this old guide
http://forum.xda-developers.com/showthread.php?t=443994
You can flash .img with TWRP too, just select "flash .img" option in install menu since I don't remember if flashify can flash image or boot file properly
Just try at your own risk
Sent from my SM-G935F using XDA-Developers mobile app
Click to expand...
Click to collapse
I have the file boot.emmc genersted by twrp that is the same as boot.img (i read that on another topic) so i will try to restore that backup that i made before flashing the custom kernel and will let you know if it works
Thanks for the support!!
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what happend after flashing your boot???

if it hasent been answered yet.
yamwt said:
I have the file boot.emmc genersted by twrp that is the same as boot.img (i read that on another topic) so i will try to restore that backup that i made before flashing the custom kernel and will let you know if it works
Thanks for the support!!
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Click to expand...
Click to collapse
if this hasent been answered yet, the file that you got from TWRP is restorable... its just in a different file format.
you can rename it to boot.img or to Boot.bin
then create a TAR archive of the file ( I use peazip on win 7 to archive it)
then to flash it with download mode (ODIN) in the Ap section. it should pass...
if not, try Prince comsy odin, sometimes does the trick..
if still NO, then the image is bad, or inferior to the current (possibly updated more, bootloader, modem, etc)
hopes this helps others.

Related

[Q] Can i make wipes from Stock recovery?

I have installed this ROM in my defy red lens (not defy+)
http://forum.xda-developers.com/showthread.php?t=1285007
But only with "nandroid" backup, so i can downgrade now (to froyo, for example)
My question is... Can i go to stock recovery with this nandroid to make wipes? Will i loose downgrade ability? Will it change BL version to BL6? Will i get bootloop?
Thanks in advance...
Anyone?
Enviado desde mi MB526 usando Tapatalk
You can do wipes from cwm right as long as you intend to be in that ROM. That was just nandroid, nothing will change to your bl versions, you can always go back to stock by installing full sbf.
Sent from my MB526 using XDA App
premaca said:
You can do wipes from cwm right as long as you intend to be in that ROM. That was just nandroid, nothing will change to your bl versions, you can always go back to stock by installing full sbf.
Sent from my MB526 using XDA App
Click to expand...
Click to collapse
I know that. But I'm asking about stock recovery with nandroid installed.
Enviado desde mi MB525 usando Tapatalk
djkail said:
I know that. But I'm asking about stock recovery with nandroid installed.
Enviado desde mi MB525 usando Tapatalk
Click to expand...
Click to collapse
Frankly I tired and got bootloop .... after wiping in stock recovery ... so see for yourself

[Q] Can't enter recovery after root???

Hello
i have rooted my i9505 in odin with CF-Auto-Root-jflte-jfltexx-gti9505 which went just fine. Then i have downloaded root check and it confirmed that the phone is rooted. After that i have flashed the newest twrp which worked fine by odin. Then i wasn't able to enter recovery so i flashed philz_touch_6.04.0-jfltexx but still can't enter into recovery mode.
I have searched the forums and have figured out that there is such a problem with at&t devices, i am on a normal gsm/4g device from australian stock.
Any ideas what to do to get this fixed? The stock Rom is horribly slow and bloated.
TIA
Flash official stock firmware and start again, please follow the steps correctly that been described in the thread of the recovery you want to use.
Sent from my GT-I9500 using XDA Premium 4 mobile app
dbzfanatic said:
This is old use nbetchers method instead.
Sent from my ROOTED T-Mobile myTouch 3G Slide using XDA App
Click to expand...
Click to collapse
What odin version are you using for recovery flashing?
Enviado desde mi GT-P7510 usando Tapatalk 2
95mediatech said:
Flash official stock firmware and start again, please follow the steps correctly that been described in the thread of the recovery you want to use.
Sent from my GT-I9500 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I will try that even if i am conviced i followed the instructions by the letter
jaswinky said:
What odin version are you using for recovery flashing?
Enviado desde mi GT-P7510 usando Tapatalk 2
Click to expand...
Click to collapse
3.0.7
dosada said:
3.0.7
Click to expand...
Click to collapse
If you have root already try to download the recovery tools in playstore then choose the clockwork rec, once its done boot to recovery and flash philz have a nice day
Sent from my Phone.
dosada said:
3.0.7
Click to expand...
Click to collapse
You should use 1.85 only for cfautoroot, and 3.09 for the rest (3.09 was made specifically for i9505 and 3.07 for i9500).
Enviado desde mi GT-I9500 usando Tapatalk 2

FLASH ANY ROM ON 4.3/4.4.2 (all builds) without having to actually root and Deknox

Update: Also works on official 4.4.2 firmware N7100XXUFND3
Hey there..!
Are you tired to make SuperSU working on your deivce?
Are you stuck to root/install custom ROM on your 4.3 Knoxed Device?
Have a look at what I did to flash a custom ROM without actually rooting the device.
Note:
This tutorial is only for those who want to flash a Custom ROM on their device.
Those who want a rooted stock ROM,then this thread is not for you.
Also,there are least chances that you may brick your device while doing this,until you follow the steps correctly.
This is personally tested by me on my GT-N7100(DDUEML4 ROM) but this method is universal and should work on all ROM'S and all variants of GN2 and also GN3 S4 and S3.
For carrier locked devices make sure you have an unlocked bootloader.
Beware, this procedure will trip your knox flag and your warranty will be void.
But as far as I know there is no way of rooting without tripping Knox on ML4 or later ROM's.
What you will need
1. ODIN 3.09/3.07
2. Custom recovery for your device(Philz,TWRP,CWM)
PROCEDURE
1. Firstly download Odin (any version will do but 3.09 is recommended).
2. Download the custom recovery which you want to install on your phone.
3. Open Odin on your computer and load the recovery file(with .tar or .tar.md5 extension) under PDA/AP tab on Odin.
(Make sure you don't mess with any other button on Odin.
Make sure re-partition is unchecked.
Make sure Auto Reboot and F.reset time boxes are checked.)
4. Put your phone into download mode(Volume down+home+power key) and click start on Odin.
In under 10seconds you will see a reset message on Odin.
5.Now,as soon as you see your reset message on Odin hold volume Up+Power+Lock button to boot into recovery.
(If you allow the phone to boot to system normally then the recovery which you just flashed would be overwritten by the stock recovery.
So make sure you don't let it boot to system)
Update: This can also be done by unchecking Auto reboot on odin.
6. Now,once you have booted to the recovery you just flashed,go and take a complete Nandroid backup of your current ROM and also backup your efs partition.
7. Next wipe everything from the recovery i.e /system, /data /dalvikcache /cache /preload.If you have philz recovery just go to wipe data factory reset and select clean and install a new ROM.
Tada..!! Now you have successfully removed Knox from your device and you can flash a custom ROM zip.( DN3 ROM for example)
The above process takes less than half an hour and you're done.
Also,those who want to stay close to stock,you can flash DN3 ROM.
Forget your Knoxed stock ROM and the painstaking rooting of the stock ROM.
Download links not attached here.They can easily be found on Google.
This is a guide mate, a helpful guide but this should be in help section, not here.
Regards.
Sent from my GT-N7100 using XDA Premium 4 mobile app
nitol said:
This is a guide mate, a helpful guide but this should be in help section, not here.
Regards.
Sent from my GT-N7100 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
How do I put it there?
Sorry a bit inexperienced
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smeet.somaiya said:
How do I put it there?
Sorry a bit inexperienced
Sent from my GT-N7100 using Tapatalk
Click to expand...
Click to collapse
Just create a new/same thread at help section and remove this.
Regards.
Sent from my GT-N7100 using XDA Premium 4 mobile app
nice guide man. good job
Sent from my GT-N7100 using Tapatalk
Very nice guide:thumbup: , if you have put it in the other section maybe its an idea to add also a tutorial for rooting a stock rom, if you want I will help you with it.
Verstuurd vanaf mijn GT-N7100 met Tapatalk
aaron13 said:
Very nice guide:thumbup: , if you have put it in the other section maybe its an idea to add also a tutorial for rooting a stock rom, if you want I will help you with it.
Verstuurd vanaf mijn GT-N7100 met Tapatalk
Click to expand...
Click to collapse
This thread has already been moved to GN2 General section.
Which section are you talking about?
Sent from my GT-N7100 using Tapatalk
smeet.somaiya said:
This thread has already been moved to GN2 General section.
Which section are you talking about?
Sent from my GT-N7100 using Tapatalk
Click to expand...
Click to collapse
Yes I meant the general section.
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Going to try this so are you actually flashing recovery permently or temp when you say it will be overwritten by stock if you let it boot. And which button is the lock button in you key press combination thanks.
jutley said:
Going to try this so are you actually flashing recovery permently or temp when you say it will be overwritten by stock if you let it boot. And which button is the lock button in you key press combination thanks.
Click to expand...
Click to collapse
Lock = power button
Cwm is permanently because after that you wiped everything in the factory wipe, also your old recovery.
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aaron13 said:
Lock = power button
Cwm is permanently because after that you wiped everything in the factory wipe, also your old recovery.
Verstuurd vanaf mijn GT-N7100 met Tapatalk
Click to expand...
Click to collapse
Thanks for your clarification what about root when we flash DN3 will we have root built in the rom and i hear about the boot loader wifi problems.
jutley said:
Thanks for your clarification what about root when we flash DN3 will we have root built in the rom and i hear about the boot loader wifi problems.
Click to expand...
Click to collapse
If the rom is pre- rooted you don't have to root it again otherwise it can easily be rooted by flashing cf root t03 with odin3.09.
Verstuurd vanaf mijn GT-N7100 met Tapatalk
jutley said:
Thanks for your clarification what about root when we flash DN3 will we have root built in the rom and i hear about the boot loader wifi problems.
Click to expand...
Click to collapse
Which bootloader do you have?
On MJ5 and later bootloaders you wont have wifi issues.
Sent from my GT-N7100 using Tapatalk
smeet.somaiya said:
Which bootloader do you have?
On MJ5 and later bootloaders you wont have wifi issues.
Sent from my GT-N7100 using Tapatalk
Click to expand...
Click to collapse
How do i check my bootloader. on about baseband N7100XXUEMJ9
jutley said:
How do i check my bootloader. on about baseband N7100XXUEMJ9
Click to expand...
Click to collapse
Tell me your build no. I can figure out the bootloader version from that.
And you can have this app to check your bootloader version.
https://play.google.com/store/apps/details?id=org.vndnguyen.phoneinfo
Sent from my GT-N7100 using Tapatalk
Jss15j.n7100xxuemk9
jutley said:
Jss15j.n7100xxuemk9
Click to expand...
Click to collapse
Okay.you wont have any wifi issues.
And remember on MK9 BOOTLOADER you cant downgrade.
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smeet.somaiya said:
Okay.you wont have any wifi issues.
And remember on MK9 BOOTLOADER you cant downgrade.
Sent from my GT-N7100 using Tapatalk
Click to expand...
Click to collapse
Why is that? Is it locked in the kernel or so?
I have a c3 bootloader from the larest stock rom , does that mean that I can not flash any rom in this forum?
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aaron13 said:
Why is that? Is it locked in the kernel or so?
I have a c3 bootloader from the larest stock rom , does that mean that I can not flash any rom in this forum?
Verstuurd vanaf mijn GT-N7100 met Tapatalk
Click to expand...
Click to collapse
See you will have wifi issues if you want to use 4.3 based roms but dont want to upgrade your bootloader.
That means if you have DMG1 or older bootloader(4.1.2 bootloader) you will have to flash wifi patch.
Otherwise on MJ5 and later you are fine.
Sent from my GT-N7100 using Tapatalk
Going to try this method now just downloading DM3 and twrp 2.70 i need to back up efs and make a nandroid backup then set to go will post my results here.
How am i suppose to backup my efs if you don't actually root the device as efs backup requires root? Can i root the latest 4.3 rom eaisly.

4.4.3 coming this week

Time to start prepping for an OTA. Memory serves, you need stock bootloader, remove root, and xposed to be able to take the OTA. Sound right??
http://www.androidcentral.com/motorola-pushing-android-443-week
Stock ATT 4.4.2 (165.44.1)
Unlocked Bootloader
Rooted via SuperSU flashable
TWRP 2.7.0.0
cpetersen2791 said:
Time to start prepping for an OTA. Memory serves, you need stock bootloader, remove root, and xposed to be able to take the OTA. Sound right??
http://www.androidcentral.com/motorola-pushing-android-443-week
Stock ATT 4.4.2 (165.44.1)
Unlocked Bootloader
Rooted via SuperSU flashable
TWRP 2.7.0.0
Click to expand...
Click to collapse
Based on the past OTA's....
Yes stock recovery is needed, but you don't need to remove root, xposed can be disabled, you need your bloat on there..
For more, see -> http://mark.cdmaforums.com/MotoX-OTA.html
Oh, and for anyone who had 4.4.2 on their phone, then partially downgraded (i.e. flashed only parts like system.img, etc from an older rom) successfully, taking the OTA now will likely brick you.
I SBF'd to 4.4.2 I'm rooted, have Phil's recovery but no xposed. Unlocked boot loader Dev edition
Based on your post I have two options.
1. SBF the stock recovery and take the update.
2. Wait till the sbf for 4.4.3 to drop and flash that.
Please confirm or let me know if I'm wrong and if there are any other options, do share please.
Great news. I only want slightly better battery life and better camera.
Sent from my Nexus 7 using XDA Free mobile app
I'm running the soak test right now. Smooth sailing so far. I used rsd lite to flash the sbf file and everything went fine
Sent from my XT1053 using Tapatalk
Will someone release this as something we can flash later or is the only way to get it via OTA? Also, if it is released on here later about how long would it take?
T-Mobile/Unlocked only right now it seems. Which is fine.
AT&T, Verizon and Sprint probably have to wait a bit.
i'm ready. got stock recovery ready to go. just gotta flash my own 4.4.2 dump back on there and i'm good to go
Where can I get the stock recovery from?
Sent from my XT1053 using Tapatalk
Everyone forgets USC exists lol but ya its deff TMobile first as of now.
Sent From My Motorola Flagship!
creid2352 said:
Where can I get the stock recovery from?
Sent from my XT1053 using Tapatalk
Click to expand...
Click to collapse
http://sbf.droid-developers.org/phone.php?device=0
Find your carrier and the Android version you want the recover.img file will be in the .zip
Also, does anybody know if a custom kernel (specifically the faux kernel 007) will interfere with an OTA? If so, where can I find the stock 4.4.2 kernel?
Symthic said:
http://sbf.droid-developers.org/phone.php?device=0
Find your carrier and the Android version you want the recover.img file will be in the .zip
Also, does anybody know if a custom kernel (specifically the faux kernel 007) will interfere with an OTA? If so, where can I find the stock 4.4.2 kernel?
Click to expand...
Click to collapse
So I should just be able to fastboot the recovery even though I'm rooted using the original ROM?
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creid2352 said:
So I should just be able to fastboot the recovery even though I'm rooted using the original ROM?
Sent from my XT1053 using Tapatalk
Click to expand...
Click to collapse
I believe so, but I'm a noob compared to some of the other people here so I wouldn't take my word for it. What I did to update to 4.4.2 was flash the stock recovery via Recovery Tools (now Rashr) and everything worked fine.
Symthic said:
I believe so, but I'm a noob compared to some of the other people here so I wouldn't take my word for it. What I did to update to 4.4.2 was flash the stock recovery via Recovery Tools (now Rashr) and everything worked fine.
Click to expand...
Click to collapse
My only concern is I'm using a custom kernel.
Sent from my XT1053 using Tapatalk
creid2352 said:
My only concern is I'm using a custom kernel.
Sent from my XT1053 using Tapatalk
Click to expand...
Click to collapse
Same here. Let's wait for the more experienced to stumble upon this thread and give us some insight
Symthic said:
Same here. Let's wait for the more experienced to stumble upon this thread and give us some insight
Click to expand...
Click to collapse
Agreed.
Sent from my XT1053 using Tapatalk
creid2352 said:
My only concern is I'm using a custom kernel.
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Click to expand...
Click to collapse
Unzip the sbf file and find the boot.IMG. that will be your stock kernel. Flash it with adb.
Sent from my XT1053 using Tapatalk
---------- Post added at 05:42 PM ---------- Previous post was at 05:38 PM ----------
creid2352 said:
So I should just be able to fastboot the recovery even though I'm rooted using the original ROM?
Sent from my XT1053 using Tapatalk
Click to expand...
Click to collapse
Yes just flash the recovery.IMG in adb and you'll have the stock recovery
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Devans32 said:
Unzip the sbf file and find the boot.IMG. that will be your stock kernel. Flash it with adb.
Sent from my XT1053 using Tapatalk
---------- Post added at 05:42 PM ---------- Previous post was at 05:38 PM ----------
Yes just flash the recovery.IMG in adb and you'll have the stock recovery
Sent from my XT1053 using Tapatalk
Click to expand...
Click to collapse
OK will do.
Sent from my XT1053 using Tapatalk
Is posible flash the stock recovery via Flashify o Rashr app?
Ps. Would be really great if anyone that already get the update make a nandroid backup of system and boot and upload it :victory:
Enviado desde mi XT1058 mediante Tapatalk
Prowler said:
Is posible flash the stock recovery via Flashify o Rashr app?
Enviado desde mi XT1058 mediante Tapatalk
Click to expand...
Click to collapse
I don't think so, probably won't work
Sent from my XT1053 using Tapatalk

Stable custom rom for N910F

Hello,
Currently I have on my note 4 a Emotion Revolution R14 rom, but with this rom my battery life is only 8 hours maximum. I'am searching for a simple custom rom with Android lollipop or better the new marshmallow rooted and with all the function of the note 4 (pen, fingerprint, heart rate sensor ecc...) but stable and with an acceptable battery life. Can someone give me some suggestions for choose a best rom please?
Thanks to all.
Sent from my SM-N910F using XDA-Developers mobile app
Clean TW for N910F. You won't find any better.
http://forum.xda-developers.com/showthread.php?p=58925494
Sent from my SM-N910F using XDA-Developers mobile app
JagDave said:
Clean TW for N910F. You won't find any better.
http://forum.xda-developers.com/showthread.php?p=58925494
Sent from my SM-N910F using XDA-Developers mobile app
Click to expand...
Click to collapse
Thank you for advice JagDave, in this days I try and I let you know. But I have a quick read of the topic and there is some problem with CSC, I have first put the stock rom after do a factory reset and after put the new rom.
Sent from my SM-N910F using XDA-Developers mobile app
Is not as complicated as it seems. Inside the zip file is a file called options.prop. Simply extract that to the root of either internal or external card and edit the CSC in there. When you open it you'll see what I mean.
Then when you flash the rom it will use that info. If you don't extract or edit the file, the rom will use whatever CSC you are currently using.
PS Don't forget to flash the CP & BL files with Odin, or you will get a boot loop.
Sent from my SM-N910F using XDA-Developers mobile app
JagDave said:
Is not as complicated as it seems. Inside the zip file is a file called options.prop. Simply extract that to the root of either internal or external card and edit the CSC in there. When you open it you'll see what I mean.
Then when you flash the rom it will use that info. If you don't extract or edit the file, the rom will use whatever CSC you are currently using.
PS Don't forget to flash the CP & BL files with Odin, or you will get a boot loop.
Sent from my SM-N910F using XDA-Developers mobile app
Click to expand...
Click to collapse
CP & BL you mean the latest? I can find it in the link under the post right?
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Yes
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