Is it possible to downgrade bootloader? - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

Hi all,
I was trying to downgrade android 11 to android 10 due to battery drain issue. However, I got this “Fail (auth)” message on Odin while flashing. After doing some googling, I believe this is due to a different bootloader version.
I’m struggling to find a solution, any suggestions? Or is it due to a different problem? Thanks.

Just stop... your battery issues won’t be solved by downgrading. Try ignoring the issue and obsess about something else.

chieco said:
Just stop... your battery issues won’t be solved by downgrading. Try ignoring the issue and obsess about something else.
Click to expand...
Click to collapse
Thanks for the advice, very helpful.

tadasu said:
Thanks for the advice, very helpful.
Click to expand...
Click to collapse
No problem anytime buddy.

Related

Nexus 7 OTA update fail

Hello guys this is my first post here. My Nexus 7 2013 WiFi gives me an error when updating from 5.0.1 to 5.0.2. My tablet isn't rooted and the bootloader is locked. I know it's easy to flash a stock rom but the problem is my charging port is faulty and cannot connect to pc. I would really appreciate your help and sorry if this post is in the wrong place.
Welcome mrboom97. What's the error? Has the bl been unlocked before?
Unfortunately without a PC connection this issue may be unresolvable.
k23m said:
Welcome mrboom97. What's the error? Has the bl been unlocked before?
Unfortunately without a PC connection this issue may be unresolvable.
Click to expand...
Click to collapse
Yes it has been unlocked before, and it just says error. And now I tried unlocking it and rooting which both succeeded and installed twrp recovery but it gives me error 7 when trying to flash. I believe that it may be unresolvable but thanks anyway
Flashing OTA zip on a rooted/modified OS is no longer possible since v5+.
k23m said:
Flashing OTA zip on a rooted/modified OS is no longer possible since v5+.
Click to expand...
Click to collapse
Thank you, I'll be deleting this thread any time soon
mrboom97 said:
Thank you, I'll be deleting this thread any time soon
Click to expand...
Click to collapse
Let it stay... as a reminder of the new OTA requirements

So my wife's D850 G3 got Marshmallow

Anyone else get it? Any new things to look for?
Yes see if when she makes a call if her screen goes to sleep and she can't hang up the call due to the black screen...thank you. That's my only issue with the update.
louvass said:
Yes see if when she makes a call if her screen goes to sleep and she can't hang up the call due to the black screen...thank you. That's my only issue with the update.
Click to expand...
Click to collapse
When updating to a big android update (Lollipop - Marshmallow) it's always best to do a factory reset afterwards because bugs come up just from updating.
If you have any issues after the factory reset then I'd be worried.
Any way to root the D850 and new Att Marshmallow?
EMINENT1 said:
Any way to root the D850 and new Att Marshmallow?
Click to expand...
Click to collapse
I would LOVE to know this as well. I am reading conflicting things. I am hesitant to update since I may not be able to obtain root....Anyone have a surefire, permanent root solution for the D850 on 6.0?
You can root it using kingroot apk. Then flash twrp
EMINENT1 said:
Any way to root the D850 and new Att Marshmallow?
Click to expand...
Click to collapse
dksoni411 said:
You can root it using kingroot apk. Then flash twrp
Click to expand...
Click to collapse
That would be a different process than I did before, do you where I can find correct, detailed info on this?
Also is KingRoot safe? I haven't done much research into that, but for some reason I vaguely remember seeing something about that apk. Any info would be greatly appreciated.
Also is this permanent? I read a kingroot method that would be cleared after reboot.
tmoca said:
That would be a different process than I did before, do you where I can find correct, detailed info on this?
Also is KingRoot safe? I haven't done much research into that, but for some reason I vaguely remember seeing something about that apk. Any info would be greatly appreciated.
Also is this permanent? I read a kingroot method that would be cleared after reboot.
Click to expand...
Click to collapse
Follow this guide.
http://forum.xda-developers.com/lg-g3/development/guide-lg-g3-running-install-twrp-t3410620
Thanks dksoni411
With only one reply (question) to this method, I am curious if anyone else that has tried this on an D850 can post their experience. I don't want to end up with a brick. HA!
Anyone?

firmware fqd2

Anyone flash the newest ota? Any differences?
Just updated yesterday. I was hoping it would finally be on 5.1.1 but don't see any difference. Still had the annoying priority notifications and heads up notifications. Glad to see someone else is still squeezing life outta their note 3.
Is there a root out for this firmware yet?
mayur420 said:
Just updated yesterday. I was hoping it would finally be on 5.1.1 but don't see any difference. Still had the annoying priority notifications and heads up notifications. Glad to see someone else is still squeezing life outta their note 3.
Click to expand...
Click to collapse
There are a lot of users out there otherwise this update wouldn't have happened. They need to have a certain amount of users to justify updating. I'm glad as this phone is still a beast, and going strong.
Isaiahrasheed said:
Is there a root out for this firmware yet?
Click to expand...
Click to collapse
Root works like any other recent version. Just look in the threads for the method you want. If it worked at least for four versions ago, it should still work now.
bobbyphoenix said:
There are a lot of users out there otherwise this update wouldn't have happened. They need to have a certain amount of users to justify updating. I'm glad as this phone is still a beast, and going strong.
Root works like any other recent version. Just look in the threads for the method you want. If it worked at least for four versions ago, it should still work now.
Click to expand...
Click to collapse
Ok I tried kingroot it said that it wasn't adaptable yet. So does that mean I should wait a while for a new root to come out or just try another way?
Isaiahrasheed said:
Ok I tried kingroot it said that it wasn't adaptable yet. So does that mean I should wait a while for a new root to come out or just try another way?
Click to expand...
Click to collapse
I think that's the only one I never used. Follow this thread for rooting. I've used this for all my Note 3 roots. You just need to do the rooting steps.
https://forum.xda-developers.com/showthread.php?t=2672393
bobbyphoenix said:
I think that's the only one I never used. Follow this thread for rooting. I've used this for all my Note 3 roots. You just need to do the rooting steps.
https://forum.xda-developers.com/showthread.php?t=2672393
Click to expand...
Click to collapse
I'll try it hopefully I don't brick it. I rooted it once before but unrooted it to update it. My Knox is already tripped do I don't care about that. Just don't wanna brick it .
bobbyphoenix said:
There are a lot of users out there otherwise this update wouldn't have happened. They need to have a certain amount of users to justify updating. I'm glad as this phone is still a beast, and going strong.
Root works like any other recent version. Just look in the threads for the method you want. If it worked at least for four versions ago, it should still work now.
Click to expand...
Click to collapse
Yes. The bootloader is unlocked!
Isaiahrasheed said:
Ok I tried kingroot it said that it wasn't adaptable yet. So does that mean I should wait a while for a new root to come out or just try another way?
Click to expand...
Click to collapse
You don't need to use kingroot. Just flash TWRP via download mode and flash SuperSU.
This is really great! What security update does it have? It would be really great to have a deodexed version. I tried on the previous
version, but failed. Does anyone have good pointers on deodexing?
ghostwheel said:
This is really great! What security update does it have? It would be really great to have a deodexed version. I tried on the previous
version, but failed. Does anyone have good pointers on deodexing?
Click to expand...
Click to collapse
The firmware version is great. Custom roms usually come deoxed. Try magma ux build

Help for Downgrading from Android 9 to Android 8.1

HI
After first Android 10 update for Xiaomi A2 Lite my phone was bricked and I had to factory reset. Since then I didn't update my phone but somehow it downloaded the latest update. So I turned off auto update from developers options. But someday ago it started overheating and became laggy even the ram management is poor now plus the bluetooth problem. After that I saw people downgrading to Android 8.1 and they said it made the phone much better. Then I thought that I should get back to Android 8.1 as well. But the problem is I never rooted my phone or any phone and never updated the phone manually. So I don't have any kind of idea about these.
Now if anyone can tell me the simplest and the best way to downgrade to Android 8.1 without any problems(Like SIM problem or anything). A video would be best. I don't want to mess up and factory reset because I don't want to lose my data again.
Thanks In Advance.
Your help is very much appreciated.
https://forum.xda-developers.com/mi-a2-lite/how-to/downgraded-android-10-to-android-8-1-t4147225
joyride76 said:
https://forum.xda-developers.com/mi-a2-lite/how-to/downgraded-android-10-to-android-8-1-t4147225
Click to expand...
Click to collapse
As I mentioned above I don't understand these things. I read that thread and every comment but it went all over my head. That's why I am asking for step by step simplest and problem free procedure. If you can make a video about it it would be best.
Thanks.
https://forum.xda-developers.com/showpost.php?p=83327295&postcount=8 describes the whole procedure. Which part exactly don't you understand?
If you google "how to flash stock rom mi a2 lite", you'll find videos describing what you should do. Good luck.
Galunid said:
https://forum.xda-developers.com/showpost.php?p=83327295&postcount=8 describes the whole procedure. Which part exactly don't you understand?
If you google "how to flash stock rom mi a2 lite", you'll find videos describing what you should do. Good luck.
Click to expand...
Click to collapse
So I saw some videos in youtube but have some questions
1.I have to wipe my data anyway for unlocking bootloader. Right?
2.Will there be any problem like sim swap,sim not working? If yes how to solve that.
3.If I lock the bootloader after downgrading will my phone become normal like it was?
Thank You.
MDMustahsin said:
So I saw some videos in youtube but have some questions
1.I have to wipe my data anyway for unlocking bootloader. Right?
2.Will there be any problem like sim swap,sim not working? If yes how to solve that.
3.If I lock the bootloader after downgrading will my phone become normal like it was?
Thank You.
Click to expand...
Click to collapse
1 - Yes
2 - https://forum.xda-developers.com/mi-a2-lite/how-to/sim-network-solution-alternatively-t3914161
I followed the post 4 https://forum.xda-developers.com/showpost.php?p=79267061&postcount=4
3 - Yes
Good luck
Robby68 said:
1 - Yes
2 - https://forum.xda-developers.com/mi-a2-lite/how-to/sim-network-solution-alternatively-t3914161
I followed the post 4 https://forum.xda-developers.com/showpost.php?p=79267061&postcount=4
3 - Yes
Good luck
Click to expand...
Click to collapse
Thanks for your help.
But it looks very complicated to me.
Is there any other way like they did https://forum.xda-developers.com/showpost.php?p=83422955&postcount=37
Can you confirm?
MDMustahsin said:
Thanks for your help.
But it looks very complicated to me.
Is there any other way like they did https://forum.xda-developers.com/showpost.php?p=83422955&postcount=37
Can you confirm?
Click to expand...
Click to collapse
Seems complicated, but isn't.
Is better you flash full stock rom (more minutes required) like me on january 2020.
If your problem is how to use MiFlash, you can find many video about MiFlash.

Question Is rooting this worth it or is it still giving people trouble?

haven't been able to find many posts on how to actually root the A32 (mine's SM-A325M/DS) but I've been seeing some about people saying that some time after rooting their A32s their IMEI disappears.
Can anyone give me an update on this and a tutorial on how to root it in case it's now possible to do it without issues?
Thanks in advance for the help
ixalcor said:
haven't been able to find many posts on how to actually root the A32 (mine's SM-A325M/DS) but I've been seeing some about people saying that some time after rooting their A32s their IMEI disappears.
Can anyone give me an update on this and a tutorial on how to root it in case it's now possible to do it without issues?
Thanks in advance for the help
Click to expand...
Click to collapse
This was a problem with older versions of magisk and is fixed. The imei does not dissapear anymore. So theres no problem anymore. If your still unsure you can try kernelsu an alternative to magisk. I have a thread for it in a32's thread.
Captain_cookie_200 said:
This was a problem with older versions of magisk and is fixed. The imei does not dissapear anymore. So theres no problem anymore. If your still unsure you can try kernelsu an alternative to magisk. I have a thread for it in a32's thread.
Click to expand...
Click to collapse
thanks for the update dude
Captain_cookie_200 said:
This was a problem with older versions of magisk and is fixed. The imei does not dissapear anymore. So theres no problem anymore. If your still unsure you can try kernelsu an alternative to magisk. I have a thread for it in a32's thread.
Click to expand...
Click to collapse
My IMEI just disappeared
goddammit
ixalcor said:
My IMEI just disappeared
goddammit
Click to expand...
Click to collapse
tf.. what version of magisk did you use
i apologize.. i daily drove magisk 25.2 for a whole year without issues. and many users reported it doesnt happen anymore. idk what happened here but i am extremely sorry. i am glad you fixed it using the other thread.

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