Downgrading from Android 10 to 9 locked bl

[ferluna18]

I am stuck at the latest version of android 10 (.618) on my xperia xz2 compact H8314 and I have a big problem using whatsapp and other messaging apps like messenger and telegram, basically the voice notes sounds very low, I can record audio using sony audio recorder and works fine but the other apps dont, I have been looking for this thread all over the xz2 forum but could not find it so thats why I decided to create it, I have also looked in other webpages but it seems that are very few mentions of it, I found this one and tried to follow it, but I failed in my attempt.
https:// xperiafirmware. com/downgrade/
Any help/advise is welcome and even questions of what I have already tried.
I thought about any other alternatives like fixing the problem in Android 10 but I couldnt either.
Edit: I get the next error message when I am flashing the .ftf file that I downloaded there:
"Those data are not in the FSC scrip and will be skipped:
BOOT,DSP,FSG,MODEMST1,MODEMST2,RDIMAGE.
Do you want to continue?"
then I try to turn on my phone and get the message "your phone is corrupt and it wont start" or something like that.
I have owned several xperia phones in the past, the last one was xperia X compact and I remember (I could be wrong) that I was able to make a downgrade without unlocking my bootloader.

 

[Tom 23]

I succesfully downgraded from 10 to 9 using sonys flashtool with bootloader unlocked. But I'm not sure if it's possible to do it without unlocking at the moment. Why not just unlock the bootloader?

 

[UncleDick]

I succesfully downgraded from 10 to 9 using sonys flashtool with bootloader unlocked. But I'm not sure if it's possible to do it without unlocking at the moment. Why not just unlock the bootloader?

Would be helpful if:

• Where to get the Sony flashtool. (link?)

• You could provide a link to how to unlock the bootloader. and

• You could describe the "Downside" to unlocking the bootloader. What "no longer works"? Such as, will it no longer apply factory updates? Will Digital Rights Management (DRM) no longer work?

Seriously, my XZ2 Compact H8214 keeps reminding me (several times a day) that a firmware update is available, and I am sort of "scared to death" to do it. All I read are negative comments about what Android 10 has done to ruin people's phone. Without a way to "go back", I am seriously thinking of just ignoring these messages for weeks and weeks.

 

[ferluna18]

I succesfully downgraded from 10 to 9 using sonys flashtool with bootloader unlocked. But I'm not sure if it's possible to do it without unlocking at the moment. Why not just unlock the bootloader?

Well first of all, unlocking bootloader voids warranty, then a number of several sony technologies will for sure stop working, Basically all proprietary technologies like audio, video and most importan thing, CAMERA enhancements, how I do know this? well because I have been reading a lot lately and also since some years ago, and by experience because back in the day I had an xperia x compact and I didnt remember to backup DRM keys before unlocking bootloader.

Anyway I have found a way to downgrade from android 10 to 9 without unlocking the bootloader, I am not sure about if I should make a new post with specific instructions( a guide) or just write them in this post.

 

[UncleDick]

Oh, yes. Please share. The more details the better. (Assuming that people "know basic things" is often incorrect. The things I don't know is FAR too big to list.)

 

[ferluna18]

Oh, yes. Please share. The more details the better. (Assuming that people "know basic things" is often incorrect. The things I don't know is FAR too big to list.)

Alright I am creating e a guide detailing things the best I can. hopefully I will finish it today.

 

[Tom 23]

Well first of all, unlocking bootloader voids warranty, then a number of several sony technologies will for sure stop working, Basically all proprietary technologies like audio, video and most importan thing, CAMERA enhancements, how I do know this? well because I have been reading a lot lately and also since some years ago, and by experience because back in the day I had an xperia x compact and I didnt remember to backup DRM keys before unlocking bootloader.

Anyway I have found a way to downgrade from android 10 to 9 without unlocking the bootloader, I am not sure about if I should make a new post with specific instructions( a guide) or just write them in this post.

I have downgraded from 10 to 9 using official flashtool from sony (with bootloader unlocked) and my camera, audio, video etc. still works just fine. Maybe I just got lucky, but I think that by doing it through the tool provided by sony itself it shouldn't break anything. Which in my case, it didn't. Btw, thanks for the guide ?

 

[williamgrant]

I have downgraded from 10 to 9 using official flashtool from sony (with bootloader unlocked) and my camera, audio, video etc. still works just fine. Maybe I just got lucky, but I think that by doing it through the tool provided by sony itself it shouldn't break anything. Which in my case, it didn't. Btw, thanks for the guide

Or maybe you don't know what you do, and happy for the nothing.
If you unlock the bootloader, you loose the TA partition (DRM keys). Your camera quality is worst, and some features lost (ps4 etc).

 

[kokokmt]

Well first of all, unlocking bootloader voids warranty, then a number of several sony technologies will for sure stop working, Basically all proprietary technologies like audio, video and most importan thing, CAMERA enhancements, how I do know this? well because I have been reading a lot lately and also since some years ago, and by experience because back in the day I had an xperia x compact and I didnt remember to backup DRM keys before unlocking bootloader.

Anyway I have found a way to downgrade from android 10 to 9 without unlocking the bootloader, I am not sure about if I should make a new post with specific instructions( a guide) or just write them in this post.[/QUOTE]

I really like to wait your post of downgrade 10 to 9.0 without bootloader unlock Coz i also don't know how to bcak up my DRM and how to restore.After upgraded to 9.0 to 10 while i opened my Camera it was appear unknown error i just wanna fix that problem.thz
Xz3 H9493:good::good::good:

 

[Mike7143]

I have downgraded from 10 to 9 using official flashtool from sony (with bootloader unlocked) and my camera, audio, video etc. still works just fine. Maybe I just got lucky, but I think that by doing it through the tool provided by sony itself it shouldn't break anything. Which in my case, it didn't. Btw, thanks for the guide

Or maybe you don't know what you do, and happy for the nothing.
If you unlock the bootloader, you loose the TA partition (DRM keys). Your camera quality is worst, and some features lost (ps4 etc).

I just picked up an H8314 for use on Verizon in the US and it has Android 10 already.

@Tom 23 can you explain more about what you did? Details? Are you using an H8314? On Verizon? I've read in the XZ2 forums supposedly now unlocking on Android 10 still breaks some stuff but now not the camera?

@williamgrant can you provide/link a list of exactly what breaks when you unlock the bootloader? Perhaps what breaks depends on what version of Android you're on when you unlock?

I'm trying to determine/weigh the pros and cons of unlocking to root are, if its worth it, what am I giving up...

 

[UncleDick]

I just picked up an H8314 for use on Verizon in the US and it has Android 10 already..

Do you notice specific problems with the H8314 on Verizon? I have been delaying the Android 10 firmware update because I cannot seem to find many reports of "how it works on Verizon".

 

[Mike7143]

I've only been using it for a little over 36 hours, but so far nothing glaringly wrong. Keep in mind thought that 36 hours ago I was using a 2013 Motorola Moto X running Android 5.1... now I'm on Android 10... So there's probably stuff that is a bug that I don't recognize is a bug!

My wife's had her H8314 on Verizon for about 6 months and it's on Android 10 as well. If she's not complained to me about anything then that's good! Then again, she's likely not at the same "level" as XDA forum members are!

 

[KHPYRA]

I too am interested in how to roll back to Android 9 if it can be accomplished reasonably easily without giving up a bunch of stuff.

I've been plagued with issues on Android 10. Even with the most recent update things have not improved. The two things most annoying to me are the drastically reduced battery life (more than halved!! it doesn't even last a full day anymore!!) and the fact that MMS do not download correctly all the time anymore. I've also noticed that camera quality has gone down somehow, even though Android 10 was supposed to improve it...

 

[Carlo_IT]

Hello folks
I successfully downgraded my XZ2 Compact (H8314) from Android 10 to 9 using that info: "https://forum.xda-developers.com/showpost.php?p=82087435"
but I had a problem, I downloaded (using XPERIAFIRM) 52.0.A.11.32 South Korea version (I'm from Italy, but Italy version is not available) , every thing work fine except LTE (4G) signal, as frequency of two country is not compatible, then I installed Android 10 again and all was ok.
So... now my question is: do you know where I can found 52.0.A.11.32 image customized for Italy?
Regards,,,Carlo

 

[lollixo]

Hello folks
I successfully downgraded my XZ2 Compact (H8314) from Android 10 to 9 using that info: "https://forum.xda-developers.com/showpost.php?p=82087435"
but I had a problem, I downloaded (using XPERIAFIRM) 52.0.A.11.32 South Korea version (I'm from Italy, but Italy version is not available) , every thing work fine except LTE (4G) signal, as frequency of two country is not compatible, then I installed Android 10 again and all was ok.
So... now my question is: do you know where I can found 52.0.A.11.32 image customized for Italy?
Regards,,,Carlo

hello Carlo i'm from italy too, do you solved? i tried with the guide on xperiafirm but i got the same error message of the user that started this topic. can you help me? thank you

Lorenzo.

 

[odiad]

hello Carlo i'm from italy too, do you solved? i tried with the guide on xperiafirm but i got the same error message of the user that started this topic. can you help me? thank you

Lorenzo.

Hello. I downloaded some month ago rom for UK via Xperifirm. I deleted already ta-files according to description, and I added newsflasher (version 20) into same folder. I zipped complete prepared folder and uploaded it now. Should be okay for Italy.

https://mega.nz/file/y7oVSRoQ#iCXPSNeeUTXFNmgtuw-w_c5Xs_9mo54kzl8jhiGS0Uc

Greetings Odiad

PS: I am not so familiar with uploading files. i hope this link works.

 

[lollixo]

Hello folks
I successfully downgraded my XZ2 Compact (H8314) from Android 10 to 9 using that info: "https://forum.xda-developers.com/showpost.php?p=82087435"
but I had a problem, I downloaded (using XPERIAFIRM) 52.0.A.11.32 South Korea version (I'm from Italy, but Italy version is not available) , every thing work fine except LTE (4G) signal, as frequency of two country is not compatible, then I installed Android 10 again and all was ok.
So... now my question is: do you know where I can found 52.0.A.11.32 image customized for Italy?
Regards,,,Carlo

Hello. I downloaded some month ago rom for UK via Xperifirm. I deleted already ta-files according to description, and I added newsflasher (version 20) into same folder. I zipped complete prepared folder and uploaded it now. Should be okay for Italy.

https://mega.nz/file/y7oVSRoQ#iCXPSNeeUTXFNmgtuw-w_c5Xs_9mo54kzl8jhiGS0Uc

Greetings Odiad

PS: I am not so familiar with uploading files. i hope this link works.

hello i can't believe you made this! you are such an hero for me! i m going to try your package, can you explain something? when the suite ask me something should i type y or n? can i follow this steps?

b) turn off your phone and connect phone to PC with holding volume down button
c) start NewFlasher from unpacked folder
d) every time NewFlasher ask you, hit N
e) after few minutes all is done and your phone gets new firmware

thank you so much in advance!