Downgrade from 8.0 to 7.0 - Samsung Galaxy S7 Edge Questions and Answers

Hey guys, I have this problem: I updated manually my S7 edge to Oreo (G935FXXU2EREM). My S7 edge suddenly freezes and restarts a lot of times a day. I read in a post here that Samsung has paused the updates because there have been this problem, so I think that is a software problem. I want to know if I can downgrade to Android 7.0 and if I can I would really appreciate the help.
Sorry about my English, it's not my mother language.
Hope you can help me!

Before you think about downgrading, tey a factory reset first and see if that fixes things. Downgrading will erase all your data anyway so it's better to try that first. Make sure to make backups of important things like passwords and pictures and stuff, but do not restore settings. Also install apps from scratch.
Sent from my GT-I9300 using Tapatalk

chanchan05 said:
Before you think about downgrading, tey a factory reset first and see if that fixes things. Downgrading will erase all your data anyway so it's better to try that first. Make sure to make backups of important things like passwords and pictures and stuff, but do not restore settings. Also install apps from scratch.
Click to expand...
Click to collapse
I already did the factory reset in recovery mode and I flashed the rom with odin again and it stills rebooting ? The downgrade is possible? Just like installing any other ROM?

chanchan05 said:
Before you think about downgrading, tey a factory reset first and see if that fixes things. Downgrading will erase all your data anyway so it's better to try that first. Make sure to make backups of important things like passwords and pictures and stuff, but do not restore settings. Also install apps from scratch.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
I already did the factory reset in recovery mode and I flashed the rom with odin again and it stills rebooting ? The downgrade is possible? Just like installing any other ROM?

Related

Rootet SG2 stuck on Bootscreen after factoryreset with CWM. (Update)

Hey
After I read that the battery life could be improved by factoryreset-ing the sg2, i resetted it in recoverymode.
And now it stuck on the boot Logo, displaying the big animated endless looping
S
Samsung
GALAXY S II​
.. and then i tryd to flash a new firmware, litening rom and I thought it would fix the problem, but no, it didnt.
I use the kernel from chainfire with Clockworkmod v3.0.0.5 + the other good stuff.
what can I do ???
edit: I try to restore my backup now
Ok cool.. the restore process works pretty good.
Everything is like it was tonight, when i backed it up.
Ok, now is the question, why does the factory reset does not work here ?
I'm pretty sure they are taking about resetting it from within the phone, ie settings, private, factory reset
Edit: It's working as intended, you wiped your data partition. Needless to say this renders the phone pretty much useless
Sent from my GT-I9100 using XDA Premium App
ok, i made a factory reset within the phone now
lets see..
Again.. same effect.. used the holy wcm to resque me.
maybe its because of the frozen sysapps that i instandly froze with TB after installing litening rom..
need to reinstall it again now.
Damn, i would like to have a real clean startup again.. and try if anything changes with the battery power.
My theory is, that many of us have a different hardware.. like battery type or a different screen or something..
Its like the 5 different firmwares for the mmols camera..
ok, i will now flash litening rom and configure it...
ps: don't forget to back it up yo!
(•.•) said:
Again.. same effect.. used the holy wcm to resque me.
maybe its because of the frozen sysapps that i instandly froze with TB after installing litening rom..
need to reinstall it again now.
Damn, i would like to have a real clean startup again.. and try if anything changes with the battery power.
My theory is, that many of us have a different hardware.. like battery type or a different screen or something..
Its like the 5 different firmwares for the mmols camera..
ok, i will now flash litening rom and configure it...
ps: don't forget to back it up yo!
Click to expand...
Click to collapse
how did u manage to solve it ..? i am facing with the same problem also ...thnaks!
Did you try to flash original kernel and then factory reset?
Had the same problem and downloaded from xda the original ke7 and installed it
problem solved. Then did a rooting again. Hope this helps.
It seems, that wiping the dalvic cache will produce that effect.
Because in the dalvic cache, there are many informations saved how your system is configurated..
For example your google account is also saved there within the google framework and the account and sync settings in the dalvic cache.
But not only there, there are some other places to.
Maybe i will make a tutorial in a while, how to change or delete the google account, because you can't delete or change it the normal way.
i solved this with wip data/cache

[Q] PLEASE Help my device!

My Samsung galaxy S4 since update to Android 4.4.2 .The Device become very slowly and lagly . I have already tried many ways,but They do not work.
So Must I got root? I do not want to root,because I am afraid after the root device will cause instability and cannot update the newest system(such as android 5.0). Please give me some great advice!
Buy nexus 5
What are the many ways you tried?
Do a factory reset.
This should delete all the unnecessary data that's accumulated over time.
Note: A factory reset will also delete everything on the Internal Storage. So make sure you backup everything you need!
Rooting the phone will not (usually) cause instability.
Changing to a custom rom is also an option. That will surely speed things up.
You will still be able to update to the official lollipop rom using Odin.
GDReaper said:
Do a factory reset.
This should delete all the unnecessary data that's accumulated over time.
Note: A factory reset will also delete everything on the Internal Storage. So make sure you backup everything you need!
Rooting the phone will not (usually) cause instability.
Changing to a custom rom is also an option. That will surely speed things up.
You will still be able to update to the official lollipop rom using Odin.
Click to expand...
Click to collapse
If I rooted the phone,I won't receive the OTA (Android 5.0) By Samsung,Right?
serdel_elo said:
Buy nexus 5
Click to expand...
Click to collapse
Dont have money
Abner GCX said:
If I rooted the phone,I won't receive the OTA (Android 5.0) By Samsung,Right?
Click to expand...
Click to collapse
Nope. But Samsung seems to be slow with those updates anyway. A faster way would be to flash the update from sammobile with Odin.

[Q] Galaxy S5 LAG after Lollipop update

Hey guys, I have updated my S5(f-version) from kitkat to Lollipop via KIES3 and it was working alright.
I thought rooting it would make it better, but now I feel it's just worse...
But now my applications constantly crashes, for an example - when recieving call the app crashes making me missing the call.
Opening gallery takes up to 7 seconds, and other apps 2-4 seconds (if not more). Which is getting very frustrating,
I dont know how to downgrade to kitkat, but I would love to do so. And then install XPOSED
Things i have done
Cleared partition cache
freeing memory
restarting the phone
unrooting
rooting
This isn't because of lollipop. The problem is something your doing or your device-
Either you did something wrong when rooting or something else.
What method did you use to root the phone?
Did you wipe data?
Make a backup in recovery and wipe data, dalvik, cache. Reflash, root and report back.
cykel said:
Things i have done
Cleared partition cache
freeing memory
restarting the phone
unrooting
rooting
Click to expand...
Click to collapse
They recalled the update they are fixing the update.
lingowistico said:
This isn't because of lollipop. The problem is something your doing or your device-
Either you did something wrong when rooting or something else.
What method did you use to root the phone?
Did you wipe data?
Make a backup in recovery and wipe data, dalvik, cache. Reflash, root and report back.
Click to expand...
Click to collapse
I had the same problems before rooting it, and thought rooting it would make a difference.
I followed all the steps correctly
If you updated from KK to LP, it is highly advisable to factory reset the phone after the update, KK leaves behind rubbish files that cause all sorts of problems, factory reset solves a big number of them
*Detection* said:
If you updated from KK to LP, it is highly advisable to factory reset the phone after the update, KK leaves behind rubbish files that cause all sorts of problems, factory reset solves a big number of them
Click to expand...
Click to collapse
My S5 is rooted, should I unroot it and factory reset trough the phone? I dont think I can acess the android recovery mode, when I try all I get is into the TeamWin one
cykel said:
My S5 is rooted, should I unroot it and factory reset trough the phone? I dont think I can acess the android recovery mode, when I try all I get is into the TeamWin one
Click to expand...
Click to collapse
No need to unroot first, but you might need to root again after
You should be able to factory reset from TWRP too - through phone or TWRP will work fine
cykel said:
I had the same problems before rooting it, and thought rooting it would make a difference.
I followed all the steps correctly
Click to expand...
Click to collapse
*Detection* said:
If you updated from KK to LP, it is highly advisable to factory reset the phone after the update, KK leaves behind rubbish files that cause all sorts of problems, factory reset solves a big number of them
Click to expand...
Click to collapse
cykel said:
My S5 is rooted, should I unroot it and factory reset trough the phone? I dont think I can acess the android recovery mode, when I try all I get is into the TeamWin one
Click to expand...
Click to collapse
*Detection* said:
No need to unroot first, but you might need to root again after
You should be able to factory reset from TWRP too - through phone or TWRP will work fine
Click to expand...
Click to collapse
Like detection pointed out, you don't need to unroot to do a factory reset.
Android Recovery = very basic and limited recovery.
TeamWin = everything the above one has plus lots of more useful functions (same goes for CWM)
When I said wipe data, cache and dalvik cache I assumed you knew what that means. Judging from your reply you don't. It means to do a factory reset, in recovery (whether it's TeamWin or whatever, doesn't matter). Be sure to make a backup in recovery if you don't want to lose data like sms messages etc.

[Q] Modified Platform.xml most apps crash and phone is unuseable

Hey guys, I'm having a serious problem with my Note 3 running kitkat, I attempted to modify the platform.xml and I don't exactly know what I did but i was attempting to allow apps to write to my external SD card, but I didn't change the permissions on it now the device literally is as about as useful as a brick.
-It will not run apps
-Internet doesn't work
-Various other problems
I've had a look at some other threads but my knowledge on androids is quite little, It was rooted by a friend who didn't exactly explain Rom's for android. So I'm wondering what I can do because I have some important things on my phone I do not want to loose, and from what i'm aware of a factory reset isn't the best option, if there's a way other than factory restoring it, I did see another solution with using ADB I think it was but i'm sure there is another way I can fix it. Note: Cannot browse any files or modify them they're not visible.
Thanks
Edit: Tried a factory restore from the restore menu I had with the root called CWM-base recovery same issue still popped up.
2nd Edit: Fixed the issue wasn't easy(This is for the people that have the same issue) I basically used android debug bridge to install root explorer, just download the android SDK from google and look up a tutorial on how to install apps, I modified the xml file to a stock one I had in the /system before I modified it, due to the apps crashing nothing would open so I couldn't do this, after that I restarted the phone made sure the apps crashed again, this was a good thing that they crashed, all I did after that was a factory reset never lost app data or my text files, everything is working and thank you guys for the help Some of my apps were gone but I had written them down so yeah, it was an annoying issue not exactly an easy fix b ut it works.
Hey. If u perform data wipe in recovery, u do not lose any files from your phone so this should be safe.
Unfortunately I have no idea how to fix the problem with XML file, but u can safely wipe your phone or reflash your rom.
Sent from my SM-N9005 using Tapatalk
kurpen said:
Hey. If u perform data wipe in recovery, u do not lose any files from your phone so this should be safe.
Unfortunately I have no idea how to fix the problem with XML file, but u can safely wipe your phone or reflash your rom.
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
"data wipe in recovery" By this do you mean the volume up + volume down + home till you get to the menu and press the restore? I just read this somewhere sorry for the noob question?
U press home +volume up +power button combo, until it reboots into recovery. Then you select wipe and factory reset or similar option. Just do not perform perform any formats, cause that's what erases your data. fingers crossed!
Sent from my SM-N9005 using Tapatalk
kurpen said:
U press home +volume up +power button combo, until it reboots into recovery. Then you select wipe and factory reset or similar option. Just do not perform perform any formats, cause that's what erases your data. fingers crossed!
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
I pressed that some little blue and yellow writing came up and my phone's screen went black I guess it either ran out of charge or something else i'll just wait and thanks so much for the help.
Always remember to have your phone over 30-40% of battery when u go to recovery to avoid your phone going off when messing with your phone
If u can get your phone to recovery, you can try to copy important files from there to your of and completely wipe everything and flash a new ROM.
Sent from my SM-N9005 using Tapatalk
kurpen said:
Always remember to have your phone over 30-40% of battery when u go to recovery to avoid your phone going off when messing with your phone
If u can get your phone to recovery, you can try to copy important files from there to your of and completely wipe everything and flash a new ROM.
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
So once my phone comes back on I can do a factory reset and hope for the best? I don't really want all of my apps to go or anything i've installed on the actual device, so when I do a factory reset will this remove everything i've got, i'm not entirely sure how i'd copy the files on to my pc because I couldn't browse anything on the device last time i plugged it in after I modified the platform.xml
You will keep your files but all the apps will be removed, so you will need to install them back. Probably you could copy the file you messed up from someone else and try to get tour phone back up but I am not sure how to do it.
Sent from my SM-N9005 using Tapatalk
kurpen said:
You will keep your files but all the apps will be removed, so you will need to install them back. Probably you could copy the file you messed up from someone else and try to get tour phone back up but I am not sure how to do it.
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
Ok thanks a ton for the help, I'm going to see if there's a way to use the adb utility to pull the file I damaged get a stock one and push it, I don't know if it will work but i'll give it a go, or should I just do a factory reset? I'd prefer to keep my apps but if it means I have to wipe them I will.
You can give it a try and then if it doesn't work, do the factory reset
Let us know how u do
Sent from my SM-N9005 using Tapatalk
kurpen said:
You can give it a try and then if it doesn't work, do the factory reset
Let us know how u do
Sent from my SM-N9005 using Tapatalk
Click to expand...
Click to collapse
Did the factory restore, via the boot thing same issue and the stupid app crashing, I'm puzzled on what to do. Any other solutions I'm concerned my phone is literallly broken now.
Factory reset does only reformat cache, Dalvik and data partition. If you tinkered with your system one and rendered something useless, it won't help you at all to do a factory reset. It just does not touch the normally READ ONLY system. If you wanna fix it, and you have no setting to fix permissions in TWRP/CWM you have to reflash the system, either by reflashing the custom ROM you used from there or by using Odin and flashing the original system back to it. This is why you ALWAYS should have a TWRP (or if you really think about outdated stuff... CWM) FULL backup ready and armed.
emuandco said:
Factory reset does only reformat cache, Dalvik and data partition. If you tinkered with your system one and rendered something useless, it won't help you at all to do a factory reset. It just does not touch the normally READ ONLY system. If you wanna fix it, and you have no setting to fix permissions in TWRP/CWM you have to reflash the system, either by reflashing the custom ROM you used from there or by using Odin and flashing the original system back to it. This is why you ALWAYS should have a TWRP (or if you really think about outdated stuff... CWM) FULL backup ready and armed.
Click to expand...
Click to collapse
Didn't think about fixing permissions. Worth giving it a try.
Sent from my SM-N9005 using Tapatalk

s5 help

Haven't been around the forums for a long time. But I noticed with lollipop the phone battery seems to not last as long. What is best to do should I install another rom? I'm on Verizon Appreciate the help.
Pivo187 said:
Haven't been around the forums for a long time. But I noticed with lollipop the phone battery seems to not last as long. What is best to do should I install another rom? I'm on Verizon Appreciate the help.
Click to expand...
Click to collapse
If you updated and didn't do a factory reset, then do a factory reset and your battery will be just as good or better.
Make a backup just in case. :good:
How can I know if I did a factory reset? Is that something I would have needed to manually do or after installing lollipop it automatically does a factory reset? Also, why does doing a factory reset somehow make the battery last longer? Sorry for so many questions but how do I create a backup?
[email protected] said:
I appreciate the response but How can I know if I did a factory reset? Is that something I would have needed to manually do or after installing lollipop it automatically does a factory reset? Also, why does doing a factory reset somehow make the battery last longer? Sorry for so many questions but how do I create a backup?
Also, If I want the phone to work better how do I do what you did with yours and have a custom ROM? Will that make the phone work a lot faster & better?
Click to expand...
Click to collapse
You need to do it manually. When updating a rom there might occur issues because of cache/dalvik and b/c of differences between the old and the new version of the firmware. If you do a factory reset (aka wipe) the app cache will be cleared. Sometimes not wiping when upgrading can result in low battery life, app crashes etc.
Here's a step by step guide http://www.digitaltrends.com/mobile/factory-reset-galaxy-s5/
To flash a custom rom you need to have a custom recovery, for more on that go here and read all of it http://forum.xda-developers.com/showthread.php?t=2699648
"Lite" (XstresoLite rom for example) versions of roms usually make the phone faster, as does cyanogenmod. Take a look in "S5 android development" and "S5 unified android development" for roms.

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