How to downgrade from Nougat to Marshmallow? e6683 - Xperia Z5 Q&A, Help & Troubleshooting

Hi. I'm using a z5 dual e6683. Can someone teach me or is there a link for a complete guide on how to downgrade? I don't know how to unlock bootloader also. Is that necessary for downgrade? And does anyone have a link for a stock firmware for marshmallow e6683?
Thank you so much in advance!

cedie04 said:
Hi. I'm using a z5 dual e6683. Can someone teach me or is there a link for a complete guide on how to downgrade? I don't know how to unlock bootloader also. Is that necessary for downgrade? And does anyone have a link for a stock firmware for marshmallow e6683?
Thank you so much in advance!
Click to expand...
Click to collapse
To get firmware you have to use xperifirm, you have it in flashtool, and to be able to downgrade you have to select to wipe everything except ssd. You don't have to downgrade to unlock bootloader, but you can backup .ta partition while on marshmallow, and can't do that on nougat.

Related

How to root Z3 Dual ?

Hi
I have a Sony Xperia Z3 Dual (D6633)
Android Lollipop 5.0.2 Build 23.1.1.E.0.1 ( Original-Stock firmware )
Locked bootloader
I want to root it without flashing any new firmware, and without unlocking the bootloader
Just Rooting
Thanks
cmureza said:
Hi
I have a Sony Xperia Z3 Dual (D6633)
Android Lollipop 5.0.2 Build 23.1.1.E.0.1 ( Original-Stock firmware )
Locked bootloader
I want to root it without flashing any new firmware, and without unlocking the bootloader
Just Rooting
Thanks
Click to expand...
Click to collapse
You cannot
Either downgrade to a firmware that is rootable via giefroot or unlock the bootloader and root. Please be advised that rooting via unlocking the bootloader first loses you the DRM keys.
The 'best' way to root is via downgrading. If you then plan to unlock the boot you can backup the TA partition to save your DRM keys.
gregbradley said:
You cannot
Either downgrade to a firmware that is rootable via giefroot or unlock the bootloader and root. Please be advised that rooting via unlocking the bootloader first loses you the DRM keys.
The 'best' way to root is via downgrading. If you then plan to unlock the boot you can backup the TA partition to save your DRM keys.
Click to expand...
Click to collapse
Downgrad ?
Could you please explain it to me clearly step by step ?
And
Is there any other program that just easy as click one key ?
Thanks
cmureza said:
Downgrad ?
Could you please explain it to me clearly step by step ?
And
Is there any other program that just easy as click one key ?
Thanks
Click to expand...
Click to collapse
http://forum.xda-developers.com/z3/general/guide-rootrecovery-how-to-root-install-t3017056
Is there any easier way and less risky ?
Just install a app and get rooted by one click?
When do you think we could see such a app???
cmureza said:
Is there any easier way and less risky ?
Just install a app and get rooted by one click?
When do you think we could see such a app???
Click to expand...
Click to collapse
No way to do it other than this.
It is not hard.

Should I re-lock the bootloader?

Hi everyone,
I have D6603 with with Android 5.1.1 (23.4.A.0.546) with an unlocked bootloader (done per instructions on Sony's website).
For a while now I've noticed that the device overheats when I use the camera for a few minutes. According to this article,
the new update Sony have released, is supposed to mitigate the problem.
I cannot update my phone to the new Android version, because of the unlocked bootloader.
Can/should I re-lock the bootloader? Or is there a way to stop the overheating issue?
beentold82 said:
Hi everyone,
I have D6603 with with Android 5.1.1 (23.4.A.0.546) with an unlocked bootloader (done per instructions on Sony's website).
For a while now I've noticed that the device overheats when I use the camera for a few minutes. According to this article,
the new update Sony have released, is supposed to mitigate the problem.
I cannot update my phone to the new Android version, because of the unlocked bootloader.
Can/should I re-lock the bootloader? Or is there a way to stop the overheating issue?
Click to expand...
Click to collapse
You can still update to the latest firmware with flashtool.
Beetle84 said:
You can still update to the latest firmware with flashtool.
Click to expand...
Click to collapse
Thanks for the info Beetle. May I be so rude to ask you, where I can get the most up to date flashable ROM?
I did unlock the bootloader, but never managed to install a recovery mod or get root.
[/COLOR]
beentold82 said:
Thanks for the info Beetle. May I be so rude to ask you, where I can get the most up to date flashable ROM?
I did unlock the bootloader, but never managed to install a recovery mod or get root.
Click to expand...
Click to collapse
In flashtool theres a button labelled xperifirm, if you click that and follow the instructions you can download a ftf directly.
As for root and recovery, you can use this guide http://forum.xda-developers.com/z3/general/guide-rootrecovery-how-to-root-install-t3017056 , and then create a pre rooted 5.1.1 firmware from here http://forum.xda-developers.com/crossdevice-dev/sony/tool-prfcreator-easily-create-pre-t2859904
Or you can install androplus kernel http://forum.xda-developers.com/z3/development/kernel-andropluskernel-t2925999 after you upgrade to stock 5.1.1 with fastboot, and skip the whole downgrade to kit kat which would be alot quicker.
Wow, that seems easy enough. I'll try it later tonight. Thanks again!
beentold82 said:
Wow, that seems easy enough. I'll try it later tonight. Thanks again!
Click to expand...
Click to collapse
No worries, good luck. You may have to disable virus protection to download xz dual recovery installer, well, I have to anyway, my VP doesnt like the install.bat file.
EDIT: isn't the .546 the latest?
Not sure... My phone tells me there is a system update, but it always fails because of the unlocked bootloader.
robogo1982 said:
EDIT: isn't the .546 the latest?
Click to expand...
Click to collapse
23.4.A.1.264 is I believe.

Sony Xperia Z3 Root android 6.0.1

Hello. I've been rooting and flashing roms on phones since 2014.. mainly the devices that are easy to root such as galaxy devices and nexus devices but I am confused with my xperia z3 which i just bought to play around with.
It's on stock android marshmallow 6.0.1 and I want to root it and flash lineage OS and xposed framework..
I dont know if I have to unlock the bootloader etc and what method to root.. I have looked all over the internet but most of the tutorials are a couple of years old and outdated which makes it confusing for me because I dont know what to install and what not to install.
If anyone could refer me to something helpful or tell me what to do that would be very much appriciated. Thanks.
first u need to dial *#*#7378423#*#*
go to service test and check is ther bootloader unlock status : no or yes
IF NO : u cannot install android 7 (N)
IF YES : U CAN UNLOCK THE BOOTLOADER EASILY WITH spflashtools
but if u are on bootloader unlock L : no
u can still root, install twrp, and xposed to your device,
easily find 'xperia z3 root noob' on google
open the link from XDA
follow the instruction
what i did is:
downgrade it to 4.4.4
then root reflash .291 (MM firmware) prerooted from xda too
that'all
How to do that sir ??
Here also a MM VERSION stock
Want to root a Z3 D6653
Can you help me how ?
Tnx
I have two questions too:
1) can I install an Android 6.0 rom without unlock the bootloader? I don't want to lose my DRM
2) If I want to change the recoery, do I need to unlock the bootloader? Can I install a different rom with the stock bootloader?
Bassi02 said:
How to do that sir ??
Want to root a Z3 D6653
Click to expand...
Click to collapse
ANdroid 6? Did you read this: https://forum.xda-developers.com/z3/general/recovery-root-mm-575-291-lb-t3435214 ?
Ansem said:
1) can I install an Android 6.0 rom without unlock the bootloader? I don't want to lose my DRM
Click to expand...
Click to collapse
Yes, update via Sony as usual, then read this: https://forum.xda-developers.com/z3/general/recovery-root-mm-575-291-lb-t3435214
Ansem said:
2) If I want to change the recoery, do I need to unlock the bootloader?
Click to expand...
Click to collapse
There is no other recovery than TWRP (not true on Android 4 and 5 since CWM also exists, but TWRP is still the best!)
Ansem said:
Can I install a different rom with the stock bootloader?
Click to expand...
Click to collapse
Different ROM as in "stock ROM pre-rooted that has some apps replaced" ? Yes
But _not_ "ROM with different kernel compiled by some user", for that you need an UNlocked bootloader... see posts above

Can I root xz without unlocking bootloader

Hi All.
I have an xz on oreo. My bootloader isnt unlockable so im wondering if theres a way to root the phone without having to flash twrp etc.
I see that oneclickroot say its unlockable but want 29$ which I think is a scam.
Any suggestions would be appreciated.
Cheers
No. It's literally impossible.
Any app saying otherwise is pure scam.
josephnero said:
No. It's literally impossible.
Any app saying otherwise is pure scam.
Click to expand...
Click to collapse
I thought as much.
Is there any way to unlock bootloader on device that doesnt allow it?
cowen1000 said:
I thought as much.
Is there any way to unlock bootloader on device that doesnt allow it?
Click to expand...
Click to collapse
Sadly noway I know of. Again unfortunately After android lollipop and adding of dm variety check and ric protection there is noway to root without unlocked bootloader.
cowen1000 said:
Hi All.
I see that oneclickroot say its unlockable but want 29$ which I think is a scam.
Any suggestions would be appreciated.
Cheers
Click to expand...
Click to collapse
Yes it is.
cowen1000 said:
I thought as much.
Is there any way to unlock bootloader on device that doesnt allow it?
Click to expand...
Click to collapse
No.
If you can download a MM firmware and flash that using flashtool you can root without unlocking the bootloader.
gregbradley said:
Yes it is.
No.
If you can download a MM firmware and flash that using flashtool you can root without unlocking the bootloader.
Click to expand...
Click to collapse
Hey, if I use firmware mm can I root without ubl? Because xz I say ubl no.
Lancelot6 said:
Hey, if I use firmware mm can I root without ubl? Because xz I say ubl no.
Click to expand...
Click to collapse
Yes, that is what I said. There was still a vulnaribility in the MM firmware (Dirtycow) so if you can find a FTF for MM, then you can flash that with flashtool and use the dirty cow exploit (Thread in general section) to root.
gregbradley said:
Yes, that is what I said. There was still a vulnaribility in the MM firmware (Dirtycow) so if you can find a FTF for MM, then you can flash that with flashtool and use the dirty cow exploit (Thread in general section) to root.
Click to expand...
Click to collapse
can you give a link for the method? pls
Hmm,,
Looking back I can only see threads about temporary root. I was positive you could root on marshmellow….maybe some more gooloing required
I have searched for it on Google and the results are only for those who have ubl yes, but is there really a way in this forum?
Lancelot6 said:
I have searched for it on Google and the results are only for those who have ubl yes, but is there really a way in this forum?
Click to expand...
Click to collapse
Yes, you can achieve temp root on marshmellow, that is how the TA backup tool work. I was pretty sure from there you could install arecoevry and flash a stock based rooted rom with a stock kernel. So its a system root not a kernel root, but this is going back a couple of years as since nougat this exploit was patched and only unlocked bootloader root was available.
But there the XZ can be downgraded to MM so its possible.
Oh, I've found it, maybe later I'll try it ... Thank you for the help bro ...
since xz came out on Android 6.01
so downgrade to ADROID 6.0
extract DRMKEYS ( TA.IMG)
UPGRADE TO ANDROID OREO
UNLOCK THE BOOTLOADER
ROOT IT
AND RELOCK THE BOOTLOADER AGAIN WITH TA.IMG
just give me the android version you wana stay and i will send u modded kernel, the one given in the post has universal drm fix! and if you relock your bootloader it will go in to bootloops!
YasuHamed said:
since xz came out on Android 6.01
so downgrade to ADROID 6.0
extract DRMKEYS ( TA.IMG)
UPGRADE TO ANDROID OREO
UNLOCK THE BOOTLOADER
ROOT IT
AND RELOCK THE BOOTLOADER AGAIN WITH TA.IMG
just give me the android version you wana stay and i will send u modded kernel, the one given in the post has universal drm fix! and if you relock your bootloader it will go in to bootloops!
Click to expand...
Click to collapse
If you relock the bootloader you cannot use a modded kernel. You have to keep the bootloader unlocked.
YasuHamed said:
since xz came out on Android 6.01
so downgrade to ADROID 6.0
extract DRMKEYS ( TA.IMG)
UPGRADE TO ANDROID OREO
UNLOCK THE BOOTLOADER
ROOT IT
AND RELOCK THE BOOTLOADER AGAIN WITH TA.IMG
just give me the android version you wana stay and i will send u modded kernel, the one given in the post has universal drm fix! and if you relock your bootloader it will go in to bootloops!
Click to expand...
Click to collapse
What about Android 7.0 bro? Is it safe to extract the drmkey? And Is this method safe for XZ docomo?
Lancelot6 said:
What about Android 7.0 bro? Is it safe to extract the drmkey? And Is this method safe for XZ docomo?
Click to expand...
Click to collapse
No, can only be done on 6
But I searched Google for backup TA but the conditions must be rooted, whereas I want to backup TA for root
Lancelot6 said:
But I searched Google for backup TA but the conditions must be rooted, whereas I want to backup TA for root
Click to expand...
Click to collapse
Yes, on android 6 you can temporarily root to backup the TA, then you can revert back to any version of android and unlock the bootloader to flash a custom rooted kernel to gain root.
However, if you restore your TA it relocks the bootloader, meaning only a stock unrooted kernel will work.
So, use flashtool to flash a MM FTF and use the TA backup tool to backup your TA. Then just unlock your bootloader and use a custom rom.
Ohh now I understand, thank you for your explanation bro and I hope I managed to try it
Does it work with Sony Xperia X Performance
---------- Post added at 02:07 AM ---------- Previous post was at 01:43 AM ----------
I have sov33 Sony Xperia X performance... So what i should do is :
1.Downgrade to MM
2.Get temporary root
3.Install twrp app and install twrp
4.Flash rooted stock rom
5.Done

Sony Xperia Xz Oreo Root Help!

Hello friends
Sony Xperia Xz mobile phone I want to make Root authority but I can not find a definite method to make Root.
Please help me find a way to do easy and precise Root.
I know how to unlock the bootloader, but I do not know how to make root.
thank you
Xperia Xz
Model number: F8331
Compilation number: 41.3.A.2.128
First of all,if you need to back up your TA keys, you need to downgrade to Marshmallow.
Just unlock the bootloader and flash a modified kernel. Then flash magisk and safety fix.
Alternative metheod: unlock the bootloader and flash existanz custom Rom.you will have root plus tons of added futures
josephnero said:
First of all,if you need to back up your TA keys, you need to downgrade to Marshmallow.
Just unlock the bootloader and flash a modified kernel. Then flash magisk and safety fix.
Alternative metheod: unlock the bootloader and flash existanz custom Rom.you will have root plus tons of added futures
Click to expand...
Click to collapse
From oreo to marshmellow how can we drop the version? do you have a link that can help?
Babycore said:
From oreo to marshmellow how can we drop the version? do you have a link that can help?
Click to expand...
Click to collapse
Using flashtool. You need MM ftf file too. There is a guide in guide section.
https://forum.xda-developers.com/xperia-xz/how-to/guide-stock-kernel-twrp-safetynet-patch-t3710781

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