Want to downgrade to Marshmallow from Noughat - Samsung Galaxy S7 Edge Questions and Answers

Mine model is 935FD, INDIA. Samsung pushed the update today and I installed, however, not liking the notifications style. I want to go back to Marshmallow. Is it possible by flashing MM stock firmware via ODIN. I know people have done it (have seen some YouTube videos) but those people were on beta firmware of Noughat, not on final official one. Lastly, if nobody knows the definitive answer and still I want to take the plunge, what worst can happen?

yes u can

You can just flash back to Nougat.
But personally I think you're mad. Nougat is far better than MM. beter battery, better performance, better functions.

I have successfully downgraded, however, all my data was lost. Thankfully I had backup so I restored. It is a matter of personal preference so I think I'm not mad IMHO

zanderzone said:
I have successfully downgraded, however, all my data was lost. Thankfully I had backup so I restored. It is a matter of personal preference so I think I'm not mad IMHO
Click to expand...
Click to collapse
You probably choosed the file CSC instead of HOME_CSC didn't you?

the_scotsman said:
You can just flash back to Nougat.
But personally I think you're mad. Nougat is far better than MM. beter battery, better performance, better functions.
Click to expand...
Click to collapse
Xposed doesnt work. That's why I dont move to nougat... I want amplfy, adblocker, appopsxposed, disable chargin led, fingerlock, gravitybox, greenefy, powernap, xtouchwiz... those apps worth staying in MM. (for me)

Related

Disadvantages of rooting?

Hi there, I'm no new to development, but haven't played with a phone in a while.
Can someone please tell me what the disadvantages of rooting the Nexus 6p are?
My plan is to get root access only to use specific apps (eg greenify) but not to install a new ROM, i.e. I'll stay with stock.
Does this affect:
-Applicability of OTA updates from Google
-ability to use the fingerprint reader
-warranty claims
-speed/stability of the device?
Thanks in advance!
qwertyuiop89 said:
Hi there, I'm no new to development, but haven't played with a phone in a while.
Can someone please tell me what the disadvantages of rooting the Nexus 6p are?
My plan is to get root access only to use specific apps (eg greenify) but not to install a new ROM, i.e. I'll stay with stock.
Does this affect:
-Applicability of OTA updates from Google
-ability to use the fingerprint reader
-warranty claims
-speed/stability of the device?
Thanks in advance!
Click to expand...
Click to collapse
-OTA are not possible when rooted. You have to flash back stock boot.img and recovery.img to accept an OTA.
-It does not interfere with Nexus Imprint (Fingerprint reader.)
-Does not affect speed or stability
-Warranty is not affected because you can flash stock imgs and relock bootloader.
You can take OTA's if you do the systemless-root. I believe you would have to flash the recovery back to stock, though.
I think you have to flash boot as well since it's modified.
the biggest disadvantage is your device become instantly awesome, so if you are used to being annoyed about the stock OS missing features this is hard to deal with
But honestly the best thing about owning a nexus is you can root and easily go back to stock if you change your mind. The flash images are also easily available for updates (even before the OTA is out). So play with it, and worst case you can always restore back to stock.
currently my only disadvantage to me is loosing android pay...
yea i know i can make it work if i delete /su/xbin... but i feel like its there for a reason and i shouldnt be deleting it.
chaco81 said:
currently my only disadvantage to me is loosing android pay...
yea i know i can make it work if i delete /su/xbin... but i feel like its there for a reason and i shouldnt be deleting it.
Click to expand...
Click to collapse
Supersu 2.61 does systemless root ootb. No need to delete anything. Systemless root will just work and Android Pay will just work.
83097markcynt said:
Supersu 2.61 does systemless root ootb. No need to delete anything. Systemless root will just work and Android Pay will just work.
Click to expand...
Click to collapse
i have been using systemless root since v 2.61... im using 2.66 now
and android pay didnt work, and even wont pass safetynet test
delete the /su/xbin folder and it passes safetynet and android pay works...
so yes, for me it sucks that i have delete that to make AP to work... which is why for now i am giving up AP since i dont feel comfortable deleting xbin and breaking stuff
Mine passes safetynet test and is just systemless with nothing deleted. No Android Pay in the UK to test it with though.
Not being awesome.
Not living in the exciting XDA fast lane!
Can I use Xposed with systemless root?
Thanks for the replies everyone - that was very helpful. I've gone ahead and installed three sustemless root, and installed xposed too, leaving the rom itself untouched as stock.
However, my system is disappointingly buggy. Apps keep crashing. Is this common? I thought this was supposed to be a stable/safe thing to do!
dimiboy said:
Can I use Xposed with systemless root?
Click to expand...
Click to collapse
Yes mate you can works perfectly well
Sent from my Nexus 6P using Tapatalk
qwertyuiop89 said:
Thanks for the replies everyone - that was very helpful. I've gone ahead and installed three sustemless root, and installed xposed too, leaving the rom itself untouched as stock.
However, my system is disappointingly buggy. Apps keep crashing. Is this common? I thought this was supposed to be a stable/safe thing to do!
Click to expand...
Click to collapse
lol this seems to happen when you root and install Xposed or pretty much modify anything. Usually I see a decrease in stability and battery life but an increase in performance, and you get to play with new features early.
I'm contemplating rooting just to use the new launcher.
qwertyuiop89 said:
Thanks for the replies everyone - that was very helpful. I've gone ahead and installed three sustemless root, and installed xposed too, leaving the rom itself untouched as stock.
However, my system is disappointingly buggy. Apps keep crashing. Is this common? I thought this was supposed to be a stable/safe thing to do!
Click to expand...
Click to collapse
You have a couple of things going on.
First root IS as safe as you let it be. If you haven't installed any root applications it should not be any more buggy than stock.
You have installed Xposed. You have not mentioned what modules you have.
I don't have any issues you describe but I don't have a lot of modules installed.
I am stock with Xposed and root.
None
Sent from my angler using XDA Labs

Possible to un-root a phone without a firmware flash?

Is it possible to "un-root" a phone without having to flash firmware? For example I'd like to use Samsung Pay which won't work because of a root check BUT would like to keep the debloated and optimized U ROM along with the non-provisioned WIFI-tethering, VVM, etc. that I originally rooted for. So is this possible? I understand that I will still be on the eng. boot kernel but that's fine.
GeoFX said:
Is it possible to "un-root" a phone without having to flash firmware? For example I'd like to use Samsung Pay which won't work because of a root check BUT would like to keep the debloated and optimized U ROM along with the non-provisioned WIFI-tethering, VVM, etc. that I originally rooted for. So is this possible? I understand that I will still be on the eng. boot kernel but that's fine.
Click to expand...
Click to collapse
You can try the unroot option in the SU app but I doubt it will work because the files are pushed to the system by ADB. I could be wrong though.
This is one thing I have been curious about as well. I just want to make a few changes to files that require root, then remove root to keep my Samsung Pay working but the changes still saved in place. I feel like someone has tried it, I just haven't ran across the post yet...
I'd like to keep the U firmware while having all of the Verizon essentials but without root. Even optimized with all battery savings, I'm getting heat just using chrome and having more battery drainage than when I was unrooted. I read it's something dealing with the eng.boot since it's not made for daily use.
So would it be possible just to factory reset U firmware and have the necessary Verizon apps to install afterwards? I'm guessing root isn't that beneficial for me at this point if it just drains my battery since I usually would have 3 hours of SOT by 50%, and now it's only 2 hours by 50%.
GigaSPX said:
So would it be possible just to factory reset U firmware and have the necessary Verizon apps to install afterwards? I'm guessing root isn't that beneficial for me at this point if it just drains my battery since I usually would have 3 hours of SOT by 50%, and now it's only 2 hours by 50%.
Click to expand...
Click to collapse
You can install most of the Verizon apps through the Play Store except for VVM, which requires you to write into /system and thus requires root and thus the eng. kernel. Also you won't be be able to patch the HD Calling feature without root as well. IF you need these features, then the eng. kernel is a must have in order to obtain root to install.
If not, you're good to go. I'm sure there's probably something else I'm missing.
GeoFX said:
You can install most of the Verizon apps through the Play Store except for VVM, which requires you to write into /system and thus requires root and thus the eng. kernel. Also you won't be be able to patch the HD Calling feature without root as well. IF you need these features, then the eng. kernel is a must have in order to obtain root to install.
If not, you're good to go. I'm sure there's probably something else I'm missing.
Click to expand...
Click to collapse
Then it would already be pretty great to simply get a debloated stock Verizon firmware. Because I was amazed at how much free space I had for internal storage once I flashed the U firmware and the v15 debloat fix zip. If I could go all of that without the battery drainage that I'm pretty sure is coming from root itself.
GigaSPX said:
Then it would already be pretty great to simply get a debloated stock Verizon firmware. Because I was amazed at how much free space I had for internal storage once I flashed the U firmware and the v15 debloat fix zip. If I could go all of that without the battery drainage that I'm pretty sure is coming from root itself.
Click to expand...
Click to collapse
Your battery drainage is due to the engineering kernel, not necessarily from root. It is not an optimized kernel at all. When I was rooted, the phone was 6 degrees C warmer at idle than stock and would lag. This is with all the V15 fixes from the S7 thread. And heat kills battery life.
I'm sure someone could do this. I'm from the verizon flat s7 forums and a person is suggesting getting on the rooted firmware then from that installing a debloated stock rom from there without root but with various cooked in optimizations. It's not out yet but I'm waiting to see what comes of it. Root hasn't settled enough for me to run it all the time just yet.
Sent from my SM-G930V using XDA-Developers mobile app
JediDru said:
I'm sure someone could do this. I'm from the verizon flat s7 forums and a person is suggesting getting on the rooted firmware then from that installing a debloated stock rom from there without root but with various cooked in optimizations. It's not out yet but I'm waiting to see what comes of it. Root hasn't settled enough for me to run it all the time just yet.
Sent from my SM-G930V using XDA-Developers mobile app
Click to expand...
Click to collapse
That's actually perfect, when possible. :0
Could you not just apply the fixes and unroot or flashing will remove these?
Sent from my SM-G935V using Tapatalk

Root for android nougat in the way future?

When Nougat gets released for this phone in how ever long it takes do you think someone will eventually be able to root it on this phone?
Seriously?
joe3681 said:
Seriously?
Click to expand...
Click to collapse
you don't have to be a douche
FreshIce21 said:
you don't have to be a douche
Click to expand...
Click to collapse
You don't have to call him a douche. Honestly, I was thinking "Seriously?" as well because this is the first thing you think (rather, post of) before Nougat even comes out. We can't see the future, so this question will probably go without an indefinite answer. My input on it, though, is that root is possible if engboot still works, but if it doesn't then we're probably screwed. And I doubt engboot will work without having even MORE issues than it already does, if it even works at all.
But seriously, the name calling was unnecessary. You're the one asking the question, no need to call people names.
SkyAttacksX said:
You don't have to call him a douche. Honestly, I was thinking "Seriously?" as well because this is the first thing you think (rather, post of) before Nougat even comes out. We can't see the future, so this question will probably go without an indefinite answer. My input on it, though, is that root is possible if engboot still works, but if it doesn't then we're probably screwed. And I doubt engboot will work without having even MORE issues than it already does, if it even works at all.
But seriously, the name calling was unnecessary. You're the one asking the question, no need to call people names.
Click to expand...
Click to collapse
thank you for your reply on your thoughts about it, thats all I was looking for. The person did not have to comment "seriously" he could have just ignore my post all together, I believe he was being a douche. The commenting of "seriously" was unnecessary. I appreciate your answer as I was just curious. Have a good day
Seriously?
FreshIce21 said:
When Nougat gets released for this phone in how ever long it takes do you think someone will eventually be able to root it on this phone?
Click to expand...
Click to collapse
It'll come precisely 2 months, 1 week, 3 days, 10 hours, 30 minutes, 6 seconds and 83 milliseconds of nougat drop date
Sent from my SAMSUNG-SM-G930A using Tapatalk
So rooted MM or non-related Nougat... that will be the question
Sent from my SM-T715Y using XDA-Developers mobile app
I don't understand the reasoning behind the question. Nougat isn't even out yet. If you want root, then root your phone. If you want rooted Nougat, wait a couple days after release for someone to build a rooted ROM on it. Why would you want to flash back to stock just to root again instead of just flashing the rooted version from the beginning? I'm assuming that's why you got the "seriously?" reactions. Well, that and the fact that since Nougat hasn't even been released yet, so it's physically impossibly for anyone to know if it can be rooted. But yeah, I'd advise you to wait until someone uploads a rooted Nougat ROM for your phone instead if flashing back to stock and hoping to root that way. Its a million times easier to root it before putting it on your device
Based upon my understanding of how KNOX operates along with the stricter changes made to dm-verity in 7.0, I wouldn't hold my breath when it comes to rooting the S7. I know that the guys that come up with these rooting methods are very creative and smart, but KNOX, combined with SELinux, dm-verity, and locked bootloaders, is almost impossible to overcome. I've been looking at the people discussing the dirtyc0w exploit as an alternative root method, and I don't think it's possible to use it because of these safeguards.
We were extremely lucky with the leaked engboot method of rooting the S7. Without that, it's very possible that we still wouldn't have root on it.
Just a bit of addition to this conversation: It's likely our current root method won't work on Nougat. It depends on how different the kernels are, but since the engboot is built for MM there's no guarantee it's compatible with a new version. There's no guarantee it won't prevent flashing the engboot kernel once you're on it, and flashing a rooted system and then switching kernels won't help since the new kernel will verify the system.
I just really hope that we can get SuperSU on Nougat now that It has began to roll out today on my AT&T Galaxy S7. I've captured the ota update for it but someone else has already posted them on the forums so I won't waste my time. Despite how beautiful Nougat looks, I'm gonna wait and stick with MM. Why? Root. I'm almost certain that once you've updated to Nougat, it won't let you flash back to MM because of the locked bootloader, and for me personally, I want to keep root so bad because of the Viper4Android equalizer. The thing gives great sound quality and music wouldn't be the same without it. Honestly, If you really wanted to keep root then my advice is to stick with MM and wait (as long as it may take) for a working root method to come out for this new update.
Cheers!
KingOfTheNet said:
I just really hope that we can get SuperSU on Nougat now that It has began to roll out today on my AT&T Galaxy S7. I've captured the ota update for it but someone else has already posted them on the forums so I won't waste my time. Despite how beautiful Nougat looks, I'm gonna wait and stick with MM. Why? Root. I'm almost certain that once you've updated to Nougat, it won't let you flash back to MM because of the locked bootloader, and for me personally, I want to keep root so bad because of the Viper4Android equalizer. The thing gives great sound quality and music wouldn't be the same without it. Honestly, If you really wanted to keep root then my advice is to stick with MM and wait (as long as it may take) for a working root method to come out for this new update.
Cheers!
Click to expand...
Click to collapse
You can downgrade back to MM. Both the updates are on bootloader v4.
KingOfTheNet said:
I just really hope that we can get SuperSU on Nougat now that It has began to roll out today on my AT&T Galaxy S7. I've captured the ota update for it but someone else has already posted them on the forums so I won't waste my time. Despite how beautiful Nougat looks, I'm gonna wait and stick with MM. Why? Root. I'm almost certain that once you've updated to Nougat, it won't let you flash back to MM because of the locked bootloader, and for me personally, I want to keep root so bad because of the Viper4Android equalizer. The thing gives great sound quality and music wouldn't be the same without it. Honestly, If you really wanted to keep root then my advice is to stick with MM and wait (as long as it may take) for a working root method to come out for this new update.
Cheers!
Click to expand...
Click to collapse
Which V4A version are you using. I can't find one that works with my phone. I'm on APK1 stock rooted.
dirtydodge said:
Which V4A version are you using. I can't find one that works with my phone. I'm on APK1 stock rooted.
Click to expand...
Click to collapse
I simply downloaded and am currently using the latest update from the developers website. Be sure to download the latest version of the app listed under "Viper4Android FX" and make sure BusyBox is properly installed on your device under /system/xbin or /system/bin. I was previously on APJ4 and just upgraded to APK1 today and haven't noticed any problems.
http://vipersaudio.com/blog/?page_id=48
Cheers!

"New" comer here, I need some help please

Hey guys, I have been out of the android world for a couple of years, I would appreciate some guidance.
I I'm currently living in US
T-mobil
Model number: SM-G935T
Android version: 6.0.1
Updated right now
So my question is, since I don't have any backup or anything, can someone provide me with the steps to get me started? Like what post to root it on this specific carrier and how everything? please
Thanks
Arturofm2 said:
Hey guys, I have been out of the android world for a couple of years, I would appreciate some guidance.
I I'm currently living in US
T-mobil
Model number: SM-G935T
Android version: 6.0.1
Updated right now
So my question is, since I don't have any backup or anything, can someone provide me with the steps to get me started? Like what post to root it on this specific carrier and how everything? please
Thanks
Click to expand...
Click to collapse
Of course we can get your started but see
But first you must answer us these question three.
Why do you want root?
Do you have a computer? (This is a must for root.)
Are you ready to be disappointed?
https://forum.xda-developers.com/tmobile-s7-edge/how-to/how-to-root-s7-edge-t3410470
follow this (use odin to flash rooted kernel) ......you should search before posting things like this.....google is your friend bro.
GOOD LUCK - BTW use flash fire app in play store to make backups and flash roms
Okay okay.
A quick glance at T-Mobile Samsung Galaxy S7 Edge Guides, News, & Discussion would have led you to the "How to root the S7 EDGE" thread.
I'd take a look in there if I were you.
Binary100100 said:
Of course we can get your started but see
But first you must answer us these question three.
Why do you want root?
Do you have a computer? (This is a must for root.)
Are you ready to be disappointed?
Click to expand...
Click to collapse
Well while I was waiting I just rooted it. So what do you think that would be the next step towards installing a rom? To answer your survey questions :laugh: :
1- Because a phone without being rooted is like a bird without wins.
2- I do
3- Oh well... tell me more
Arturofm2 said:
Well while I was waiting I just rooted it. So what do you think that would be the next step towards installing a rom? To answer your survey questions :laugh: :
1- Because a phone without being rooted is like a bird without wins.
2- I do
3- Oh well... tell me more
EDIT: I just checked and the root didn't go through... even though ODIN said it was successful
Click to expand...
Click to collapse
Well then.
Rooting the phone (as I'm sure you had already found out) was fairly easy.
BUT... since we do not have an unlocked bootloader then we cannot have any custom recovery. Which means we can only (for now) use adb and Fireflash to flash any custom firmwares. And while we're on the subject of that... there is only one custom rom. Well... technically there are two but only one for you since you updated to the latest firmware.
Echoe ROM which was updated (ummm...) September 9th (not including the Verizon version which might work but with no promises)
Tekxv2 which was updated back in July. Unfortunately, that is flashed by adb (computer required) and only supports G935TUVS3APD8 which is... pretty old.
Things that you may notice with root.
Battery life may be shorter.
Strange icons on your status bar.
Might start to have random reboots for absolutely no reason.
Can't use Samsung Pay and some other apps.
Phone might be laggy.
Phone might feel hot.
Some of those can be resolved by flashing the only custom rom that we have (Echoe ROM... which is a rather nice rom) but it's not "there" yet.
Or you can use the guide in my signature to resolve issues like the lag and the strange icons. Yet even after the "fix" you might still experience both again from time to time.
You might even have the IMS force close issue which I used to get about once a month. It would piss me off because no sooner that you click the button, it'll pop up again and you don't have time to do anything. You're pretty much forced to reflash stock, wipe, re-root, restore a latest backup... which can take hours and is rather inconvenient if it happens to you while you're at work like it always seemed to happen for me.
SO...
All in all... root is okay. It's better than nothing I suppose. But until we get more developer support for this phone then in my opinion it's kinda pointless in my opinion.
Too many drawbacks. I eventually unrooted two weeks ago and I love my phone now. I'm using the heck out of Samsung Pay especially since their promotions are pretty nice right now! Plus a few members are testing the Nouget update which probably won't be getting root at all since rooting requires an engineering kernel which we don't have and might not get. Or an unlocked bootloader which we've pretty much given up on.
A lot of members that are testing the Nouget beta firmware are extremely satisfied with it so if we can't root Nouget then having a rooted S7 will probably fade away as more people update to Android 7+. That's where I see this going anyway.
Binary100100 said:
What you wrote above
Click to expand...
Click to collapse
So for what I understood the dev support for this phone is very limited... I know the issues I may encounter, I had them with the galaxy note. but any way... If something I'll unroot it but I want to try it out Thank for you time. I've rooted it.
EDIT: Damn... I really don't like the visual style of Echoe... is that one the only one I can flash??
Binary100100 said:
Well then.
Rooting the phone (as I'm sure you had already found out) was fairly easy.
BUT... since we do not have an unlocked bootloader then we cannot have any custom recovery. Which means we can only (for now) use adb and Fireflash to flash any custom firmwares. And while we're on the subject of that... there is only one custom rom. Well... technically there are two but only one for you since you updated to the latest firmware.
Echoe ROM which was updated (ummm...) September 9th (not including the Verizon version which might work but with no promises)
Tekxv2 which was updated back in July. Unfortunately, that is flashed by adb (computer required) and only supports G935TUVS3APD8 which is... pretty old.
Things that you may notice with root.
Battery life may be shorter.
Strange icons on your status bar.
Might start to have random reboots for absolutely no reason.
Can't use Samsung Pay and some other apps.
Phone might be laggy.
Phone might feel hot.
Some of those can be resolved by flashing the only custom rom that we have (Echoe ROM... which is a rather nice rom) but it's not "there" yet.
Or you can use the guide in my signature to resolve issues like the lag and the strange icons. Yet even after the "fix" you might still experience both again from time to time.
You might even have the IMS force close issue which I used to get about once a month. It would piss me off because no sooner that you click the button, it'll pop up again and you don't have time to do anything. You're pretty much forced to reflash stock, wipe, re-root, restore a latest backup... which can take hours and is rather inconvenient if it happens to you while you're at work like it always seemed to happen for me.
SO...
All in all... root is okay. It's better than nothing I suppose. But until we get more developer support for this phone then in my opinion it's kinda pointless in my opinion.
Too many drawbacks. I eventually unrooted two weeks ago and I love my phone now. I'm using the heck out of Samsung Pay especially since their promotions are pretty nice right now! Plus a few members are testing the Nouget update which probably won't be getting root at all since rooting requires an engineering kernel which we don't have and might not get. Or an unlocked bootloader which we've pretty much given up on.
A lot of members that are testing the Nouget beta firmware are extremely satisfied with it so if we can't root Nouget then having a rooted S7 will probably fade away as more people update to Android 7+. That's where I see this going anyway.
Click to expand...
Click to collapse
How are you doing with the ads? Like youtube, pandora, spotify? I just installed xposed and the phone feels very hot, and If I unroot it (which I'm thinking to do) I won't be able to get things without ads (I know about vpns and browsers). Also how can I install teaks for apps? Installing apks from pages that promise you this and you have to log in is very untruthful. Any suggestions to all this?
Arturofm2 said:
How are you doing with the ads? Like youtube, pandora, spotify? I just installed xposed and the phone feels very hot, and If I unroot it (which I'm thinking to do) I won't be able to get things without ads (I know about vpns and browsers). Also how can I install teaks for apps? Installing apks from pages that promise you this and you have to log in is very untruthful. Any suggestions to all this?
Click to expand...
Click to collapse
I just put up with them.
In all reality, I don't use my phone for the purposes that require my viewing of ads to begin with.
Sure when I was rooted I had adblocker. But honestly, I had completely forgotten all about that benefit of being rooted until now.
I suppose if you absolutely need to be rid of ads then by all means, retain root. However ads don't effect my daily use one bit.
Binary100100 said:
I just put up with them.
In all reality, I don't use my phone for the purposes that require my viewing of ads to begin with.
Sure when I was rooted I had adblocker. But honestly, I had completely forgotten all about that benefit of being rooted until now.
I suppose if you absolutely need to be rid of ads then by all means, retain root. However ads don't effect my daily use one bit.
Click to expand...
Click to collapse
Could you help me unroot it? I was following a guide here to unroot it and downloaded the firmware but when I click flash, it didn't work, I'm having travel reverting it, can you help me? The model is: SM-G935T
Arturofm2 said:
Could you help me unroot it? I was following a guide here to unroot it and downloaded the firmware but when I click flash, it didn't work, I'm having travel reverting it, can you help me? The model is: SM-G935T
Click to expand...
Click to collapse
I just flash the appropriate firmware that you had prior to rooting with ODIN.
Never had any issues. Which "guide" are you referring to?
Binary100100 said:
I just flash the appropriate firmware that you had prior to rooting with ODIN.
Never had any issues. Which "guide" are you referring to?
Click to expand...
Click to collapse
bro now I'm friking out, I followed this guide and when I click in flash it says Fail. I followed it step by step, I don't don't what's going on and when I reset the phone it says custom and doesn't even load, so tmobil would know that I rooted it...
fff.... can you give me the link, guide, whatever you used to revert it?
Arturofm2 said:
bro now I'm friking out, I followed this guide and when I click in flash it says Fail. I followed it step by step, I don't don't what's going on and when I reset the phone it says custom and doesn't even load, so tmobil would know that I rooted it...
fff.... can you give me the link, guide, whatever you used to revert it?
Click to expand...
Click to collapse
You're probably trying to flash a firmware with a V3 bootloader over G935TTMB4APK1.
If you were seriously following that (outdated) guide step by step then you tried flashing TMB_G935TUVU3APG1.zip over a PK1 firmware. Yeah... that doesn't work.
Download the latest firmware from sammmobile.
https://www.sammobile.com/firmwares/database/SM-G935T/
Try it again.
IF that doesn't work... try using Smart Switch.
I haven't done it before but I think it's the Emergency Software Recovery and Initialization.
forum.xda-developers.com/tmobile-s7-edge/how-to/odin-apk1-tmobile-tmbg935ttmb4apk1-t3494724
Odin this to return to stock firmware.
Binary100100 said:
You're probably trying to flash a firmware with a V3 bootloader over G935TTMB4APK1.
If you were seriously following that (outdated) guide step by step then you tried flashing TMB_G935TUVU3APG1.zip over a PK1 firmware. Yeah... that doesn't work.
Download the latest firmware from sammobile.
https://www.sammobile.com/firmwares/database/SM-G935T/
Try it again.
IF that doesn't work... try using Smart Switch.
I haven't done it before but I think it's the Emergency Software Recovery and Initialization.
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You have no idea the help you gave me. I went to sammobil before but since it said that the download speed was too slow, I didn't do it through that page. Now I did it and it's working fine thanks bro.
But when I start it, it says: custom in the log in, how can I totally put it original?
tduquefjc said:
forum.xda-developers.com/tmobile-s7-edge/how-to/odin-apk1-tmobile-tmbg935ttmb4apk1-t3494724
Odin this to return to stock firmware.
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If I want to remove everything and just leave it plain how it comes from factory when you buy it, do I just flash the AP file?
Arturofm2 said:
You have no idea the help you gave me. I went to sammobil before but since it said that the download speed was too slow, I kept it. Now I did it and it's working fine thanks bro.
But when I start it, it says: custom in the log in, how can I totally put it original?
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Click to collapse
Arturofm2 said:
If I want to remove everything and just leave it plain how it comes from factory when you buy it, do I just flash the AP file?
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Click to collapse
You should flash everything.
BL= Bootloader (which should be V4 since you updated to the latest firmware already. Anything less than V4 will fail.)
AP= Is for System, Cache, kernel, etc.
CP= Is for modems
CSC is for your HOME_CSC_TMB_G935TTMB4APK1_CL9507190_QB11413830_REV02_user_low_ship_MULTI_CERT.tar.md5 file.
Important! If you use the CSC_TMB_G935TTMB4APK1_CL9507190_QB11413830_REV02_user_low_ship_MULTI_CERT.tar.md5 (doesn't have the word "HOME" in the name) then it'll wipe your phone!
If your phone still says "CUSTOM" on it then make sure that reboot and check again. If it still says custom then make sure that you don't still have the engineering kernel. Re-flash the AP files again if so. It shouldn't though if it's 100% stock. Also note if you saw the unlocked padlock on the S7 Edge splash screen (before the bootanimation).
Good luck and happy New Year.
Binary100100 said:
You should flash everything.
BL= Bootloader (which should be V4 since you updated to the latest firmware already. Anything less than V4 will fail.)
AP= Is for System, Cache, kernel, etc.
CP= Is for modems
CSC is for your HOME_CSC_TMB_G935TTMB4APK1_CL9507190_QB11413830_REV02_user_low_ship_MULTI_CERT.tar.md5 file.
Important! If you use the CSC_TMB_G935TTMB4APK1_CL9507190_QB11413830_REV02_user_low_ship_MULTI_CERT.tar.md5 (doesn't have the word "HOME" in the name) then it'll wipe your phone!
If your phone still says "CUSTOM" on it then make sure that reboot and check again. If it still says custom then make sure that you don't still have the engineering kernel. Re-flash the AP files again if so. It shouldn't though if it's 100% stock. Also note if you saw the unlocked padlock on the S7 Edge splash screen (before the bootanimation).
Good luck and happy New Year.
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Click to collapse
Perfect! All I did was reboot it, and the unlocked padlock went away, thank you very much for all your help! Happy new year!

How to downgrade the software version?

Hi,
I've read a lot of threads about upgrading software on this phone but I'm not really sure how to downgrade it. I would want to play around with different versions of android to find which one suits me the best. I will get A2017G version. Can you help me?
Thank you
Pretty sure if you're on Nougat you can flash MM B11 to go back. That's the latest MM. You lose Daydream on MM if that's of any concern.
I use Nougat, won't be using MM.
RobboW said:
Pretty sure if you're on Nougat you can flash MM B11 to go back. That's the latest MM. You lose Daydream on MM if that's of any concern.
I use Nougat, won't be using MM.
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And which version of Nougat do you use? I'm worried about battery life.
Evzzza said:
And which version of Nougat do you use? I'm worried about battery life.
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Click to collapse
Battery life isn't really something consistent among different phones. Sometimes your installation will run like utter crap, and the way to fix it would be by installing a custom ROM (you can get around 7h SOT with a well set up system; like an EAS kernel, Swift Black, and LOS-based stuff like RR) and either stay on custom or go back to stock. Also you can use MiFlash to reinstall the stock system without actually needing to go custom then return.
I had this little thing where I went custom just to try, I used it for 3 months, and then I decided to go back to B10 Marshmallow. After using MiFlash to get B10 working, the phone would randomly reboot roughly once every two hours. I updated to latest Nougat, then even downgraded, but there was no way to fix that. The only thing that helped me was to install custom again then go back to stock. MiFlash might also do the trick though
Evzzza said:
And which version of Nougat do you use? I'm worried about battery life.
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Click to collapse
Was on BO4 and updated to B08, saw no real difference between.
I had some funny stuff with dual SIMs being unreliable then realised I couldn't send a multimedia message. The update messed up my apn settings a tiny bit but I fixed that and been fine since.

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