Xperia X Downgrade from 8.0 to 7.1.1? I need a stock ROM. - Sony Xperia X Questions & Answers

Hey guys, I just updated my system to 8.0 and I hate it, I'd like use 7.1.1 again. I cannot find any stock roms. Can someone help me? The 2017.december one would be the greatest.

Hi,
download FlashTool for Xperia devices.
Install the program.
Go to C:/FlashTool/drivers a install drivers (during installation you will meet with list so chose flashmode and fastboot drivers).
Run FlashTool.
Click on Black icon with XF letters.
On the left side find Xperia X and correct model number.
On the right side click on "Check all" and all firmwares will be shown.
Click on "Latest firmware" column and it will be ordered from the newest to oldest.
Click on number ending .252
On the right side click on rectangle with the number of FW.
It will pop up window so click on Download.
Firmware after that is downloaded and converted to FTF.
You can flash it.
I can help if you still don't understand.
Sent from my F5121 using Tapatalk

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depressed_ said:
Hi,
download FlashTool for Xperia devices.
Install the program.
Go to C:/FlashTool/drivers a install drivers (during installation you will meet with list so chose flashmode and fastboot drivers).
Run FlashTool.
Click on Black icon with XF letters.
On the left side find Xperia X and correct model number.
On the right side click on "Check all" and all firmwares will be shown.
Click on "Latest firmware" column and it will be ordered from the newest to oldest.
Click on number ending .252
On the right side click on rectangle with the number of FW.
It will pop up window so click on Download.
Firmware after that is downloaded and converted to FTF.
You can flash it.
I can help if you still don't understand.
Sent from my F5121 using Tapatalk
Click to expand...
Click to collapse
Thank you. I got it. I've done things like this before on my Xperia Z1 but it always end up bridging my phone and it took a long time to get it work. I wanted to ask which stock ROM should i pick? There's 4 .252 roms there with different location? is that important? Will i have any signal issues? And how could i update the rom without losing any data? Like when I updated to 8.0, is there anyway all that only the system changes? imgur.com/a/YPWMA

Atlax01 said:
Thank you. I got it. I've done things like this before on my Xperia Z1 but it always end up bridging my phone and it took a long time to get it work. I wanted to ask which stock ROM should i pick? There's 4 .252 roms there with different location? is that important? Will i have any signal issues? And how could i update the rom without losing any data? Like when I updated to 8.0, is there anyway all that only the system changes? imgur.com/a/YPWMA
Click to expand...
Click to collapse
You can update through OTA if you don't wanna lose data.
Pick CE1. It doesn't matter. There might be a small difference but I guess only the little one.
Sent from my F5121 using Tapatalk

Atlax01 said:
Thank you. I got it. I've done things like this before on my Xperia Z1 but it always end up bridging my phone and it took a long time to get it work. I wanted to ask which stock ROM should i pick? There's 4 .252 roms there with different location? is that important? Will i have any signal issues? And how could i update the rom without losing any data? Like when I updated to 8.0, is there anyway all that only the system changes? imgur.com/a/YPWMA
Click to expand...
Click to collapse
wipe every thing without ssd will save your data on internal memory

Atlax01 said:
Hey guys, I just updated my system to 8.0 and I hate it, I'd like use 7.1.1 again. I cannot find any stock roms. Can someone help me? The 2017.december one would be the greatest.
Click to expand...
Click to collapse
sister brother
All sony Stock rom
http://samsony.net/m/#sony

depressed_ said:
You can update through OTA if you don't wanna lose data.
Pick CE1. It doesn't matter. There might be a small difference but I guess only the little one.
Sent from my F5121 using Tapatalk
Click to expand...
Click to collapse
What is OTA? Is that a program or a method? How to use it?

Hey. Can you please tell me why you hate it? I wanted to upgrade for quite some time, and I dont know if I should. I am in 7.0

FoxTheLegend said:
Hey. Can you please tell me why you hate it? I wanted to upgrade for quite some time, and I dont know if I should. I am in 7.0
Click to expand...
Click to collapse
For me some notification's stuck on 1, you know the small number on the top right of the icon. Settings are confusing, maybe a bit slower system, camera laggs a bit, while playing music on t he sony music app if ii start or pause music it starts vibrating or giving sounds if slient mode isnt turned on , even while changing track. awful

I must disagree.
Camera is faster so does the OS.
If you made clean install then there must be something wrong.
What's worse is battery life but the first version of newer Android always is with downsides which might be fixed in the future.
Sent from my F5121 using Tapatalk

depressed_ said:
I must disagree.
Camera is faster so does the OS.
If you made clean install then there must be something wrong.
What's worse is battery life but the first version of newer Android always is with downsides which might be fixed in the future.
Click to expand...
Click to collapse
yeah but isnt this our last official firmware?

I don't get the question mark - rhetorical question?
Sony gotta release updated FW of Oreo. It's not working like last 7.1.1.
I'm sure about not getting 8.1 but ignoring their last FW for Xperia X would be a bad move.
Sent from my F5121 using Tapatalk

Related

[Q] Im a noob and confused - sim lock

Hi Guys,
I've got a S2 on Tmobile UK and I wish to unlock it to enable me to use other network sims.
Im not entirely sure what to do with all these rom versions and firmware stuff etc ...
I've managed to root my phone via CWM.zip and using the SU-Busybox.zip ... now im not too sure what to do next to sim unlock. I've tried all the sim unlock programs from the market but they dont seem to work.
I dont want to install all these flashy things and wish to keep everything stock if possible.
Currently im using ICS 4.04
PDA : I9100BVLPH
PHONE : I9100BVLPE
CSC: I9100TMULPH
Thanks All!
phozy888 said:
Hi Guys,
I've got a S2 on Tmobile UK and I wish to unlock it to enable me to use other network sims.
Im not entirely sure what to do with all these rom versions and firmware stuff etc ...
I've managed to root my phone via CWM.zip and using the SU-Busybox.zip ... now im not too sure what to do next to sim unlock. I've tried all the sim unlock programs from the market but they dont seem to work.
I dont want to install all these flashy things and wish to keep everything stock if possible.
Currently im using ICS 4.04
PDA : I9100BVLPH
PHONE : I9100BVLPE
CSC: I9100TMULPH
Thanks All!
Click to expand...
Click to collapse
Which sim unlock apps have you tried?
kilometers4 said:
Which sim unlock apps have you tried?
Click to expand...
Click to collapse
Galaxy S Unlock - free - dont work
Galaxy sim unlock - this one havent tried needs to pay .... ideally want it done free
This is the one I used when I first got my device and it worked. (Free)
_https://play.google.com/store/apps/details?id=com.helroz.galaxysunlock&hl=en
This one is newer and more compatible but will cost small fee of about £1.60 to unlock device.
_https://play.google.com/store/apps/details?id=com.spocky.galaxsimunlock&hl=en
TheATHEiST said:
This is the one I used when I first got my device and it worked. (Free)
_https://play.google.com/store/apps/details?id=com.helroz.galaxysunlock&hl=en
This one is newer and more compatible but will cost small fee of about £1.60 to unlock device.
_https://play.google.com/store/apps/details?id=com.spocky.galaxsimunlock&hl=en
Click to expand...
Click to collapse
Do these work on the ICS I read they only work for gingerbread ?
would sim unlocking have any effect updating via kies again when Jelly bean gets released ?
Thank you
I was able to get the phone unlocked using the following app.
See the following Link and download the .apk file and install it on your device. But make sure you have rooted phone.
Link: http://forum.xda-developers.com/showpost.php?p=34187077&postcount=685
After you install it then you run it and there is a small gray bar at the bottom you just press that phone unlocked and you restart the device. Everything works fine. It worked for me I hope it works for you as well. Even if u have tried the same app before i suggest you still try the one on that link.
phozy888 said:
Do these work on the ICS I read they only work for gingerbread ?
would sim unlocking have any effect updating via kies again when Jelly bean gets released ?
Thank you
Click to expand...
Click to collapse
The second one works on GB/ICS/JB. I can confirm it works on JB as I recently used it after installing latest leaked JB sammy rom as that was sim locked.
sabeeh121 said:
I was able to get the phone unlocked using the following app.
See the following Link and download the .apk file and install it on your device. But make sure you have rooted phone.
Link: http://forum.xda-developers.com/showpost.php?p=34187077&postcount=685
After you install it then you run it and there is a small gray bar at the bottom you just press that phone unlocked and you restart the device. Everything works fine. It worked for me I hope it works for you as well. Even if u have tried the same app before i suggest you still try the one on that link.
Click to expand...
Click to collapse
trying this one now
sabeeh121 said:
I was able to get the phone unlocked using the following app.
See the following Link and download the .apk file and install it on your device. But make sure you have rooted phone.
Link: http://forum.xda-developers.com/showpost.php?p=34187077&postcount=685
After you install it then you run it and there is a small gray bar at the bottom you just press that phone unlocked and you restart the device. Everything works fine. It worked for me I hope it works for you as well. Even if u have tried the same app before i suggest you still try the one on that link.
Click to expand...
Click to collapse
Work for me! Thankz!
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sabeeh121 said:
I was able to get the phone unlocked using the following app.
See the following Link and download the .apk file and install it on your device. But make sure you have rooted phone.
Link: http://forum.xda-developers.com/showpost.php?p=34187077&postcount=685
After you install it then you run it and there is a small gray bar at the bottom you just press that phone unlocked and you restart the device. Everything works fine. It worked for me I hope it works for you as well. Even if u have tried the same app before i suggest you still try the one on that link.
Click to expand...
Click to collapse
Yeah it worked !!! just another question
If I have now unlocked the phone can I still get the official jelly bean update when it comes out from Tmobile via kies ?
phozy888 said:
Yeah it worked !!! just another question
If I have now unlocked the phone can I still get the official jelly bean update when it comes out from Tmobile via kies ?
Click to expand...
Click to collapse
I never knew that S-II is gonna receive official JB update. lolllllz but if you want pure JB and fulls stock experience, try the leaked JB version for S-II on Sammy. Am usin it and its awesome
alvinasnow said:
I never knew that S-II is gonna receive official JB update. lolllllz but if you want pure JB and fulls stock experience, try the leaked JB version for S-II on Sammy. Am usin it and its awesome
Click to expand...
Click to collapse
I thought it was coming out sometime this month - i've seen lots of posts about this and search through Google seems so. Unless im wrong :/
It works!
sabeeh121 said:
I was able to get the phone unlocked using the following app.
See the following Link and download the .apk file and install it on your device. But make sure you have rooted phone.
Link: http://forum.xda-developers.com/showpost.php?p=34187077&postcount=685
After you install it then you run it and there is a small gray bar at the bottom you just press that phone unlocked and you restart the device. Everything works fine. It worked for me I hope it works for you as well. Even if u have tried the same app before i suggest you still try the one on that link.
Click to expand...
Click to collapse
It works for Me too, thanks a lot!!!
phozy888 said:
Yeah it worked !!! just another question
If I have now unlocked the phone can I still get the official jelly bean update when it comes out from Tmobile via kies ?
Click to expand...
Click to collapse
Unlocking has got nothing to do with updates, firmware does.
If kies sees you're rooted, might play hardball with your device.
Why people keep updating via kies? What if power goes off?
And who waits for branded updates to roll out????????????
I'm kidding, it's your right to do so.
---------- Post added at 09:33 PM ---------- Previous post was at 09:31 PM ----------
alvinasnow said:
I never knew that S-II is gonna receive official JB update. lolllllz but if you want pure JB and fulls stock experience, try the leaked JB version for S-II on Sammy. Am usin it and its awesome
Click to expand...
Click to collapse
It went out like 2 week ago, were you sleeping?

Android 4.4.4 INDIA: Sony website updated

Android 4.4.4 for Xperia Z ULTRA in India
Latest available software
You may already have the latest software, depending on the date of purchase. Software updates are released at different times depending on operator and/or country. Therefore, we cannot give you an exact date for when a specific update will be available for your device.
Android version: Google Android 4.4 (Kitkat)
Latest available software: 14.4.A.0.108
Release started: 2014-06-27
To find your device’s current software version:
Settings > About phone > Build number / version
Included in this software
There are many improvements in this upgrade for your Xperia™ smartphone, some examples are:
Android 4.4.4 including the latest enhancements and security updates from Google
Updated and improved camera experience
Improvements when using Google voice, Contacts, Music streaming and Google+
The latest versions of our Sony apps for you to enjoy
All of our latest bug fixes, optimisations & improvements:laugh:
http://www.sonymobile.com/in/software/phones/xperia-z-ultra/
Screenshot
FTF? Can anyone plz upload it
Sent from my C6802 using XDA Free mobile app
Strange. Am in India, on a locally bought XZU. But not seeing the update in Sony PC Companion.
Hoping someone uploads a FTF though.
Also, will changing the build.prop to some other region trigger the update?
krumbs said:
Strange. Am in India, on a locally bought XZU. But not seeing the update in Sony PC Companion.
Hoping someone uploads a FTF though.
Also, will changing the build.prop to some other region trigger the update?
Click to expand...
Click to collapse
Hi,
Even I didn't get the update. What I mentioned was that the Sony page is updated
N that itself suggests things are really close to reality
N that it will be available soon
ast9011 said:
FTF? Can anyone plz upload it
Sent from my C6802 using XDA Free mobile app
Click to expand...
Click to collapse
If you can guide me on how to do it, I'll be happy to help
krumbs said:
Strange. Am in India, on a locally bought XZU. But not seeing the update in Sony PC Companion.
Hoping someone uploads a FTF though.
Also, will changing the build.prop to some other region trigger the update?
Click to expand...
Click to collapse
1275-9426 (apparently) will at least trigger ota on locked bootloaders.. (then towelroot I guess..)
iBuzman said:
1275-9426 (apparently) will at least trigger ota on locked bootloaders.. (then towelroot I guess..)
Click to expand...
Click to collapse
So at the moment no love for unlocked ones?
Sent from my C6833 using XDA Premium 4 mobile app
Sry, I was a little misleading.. There is never any love for unlocked ones when it comes to ota updating lol ~ so I agree, ftf required
I am considering relocking it just to get this update
Sent from my C6833 using XDA Premium 4 mobile app
maxld said:
I am considering relocking it just to get this update
Sent from my C6833 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
iBuzman said:
1275-9426 (apparently) will at least trigger ota on locked bootloaders.. (then towelroot I guess..)
Click to expand...
Click to collapse
Changed the CDA to 1275-9426 (Italy), but that did not lead to an update. Maybe it is currently available only for 6833 devices? Wondering what will happen if I replace all instances of C6802 to C6833 in the build.prop...
krumbs said:
Changed the CDA to 1275-9426 (Italy), but that did not lead to an update. Maybe it is currently available only for 6833 devices? Wondering what will happen if I replace all instances of C6802 to C6833 in the build.prop...
Click to expand...
Click to collapse
all the best....
krumbs said:
Changed the CDA to 1275-9426 (Italy), but that did not lead to an update. Maybe it is currently available only for 6833 devices? Wondering what will happen if I replace all instances of C6802 to C6833 in the build.prop...
Click to expand...
Click to collapse
why dont we just wait for few hours
vinurohitraj said:
why dont we just wait for few hours
Click to expand...
Click to collapse
Yes, that will be the sanest thing to do.
Well, I did go ahead and change all instances of C6802 to C6833 in build.prop. Saved the file, and rebooted.
The good news - the phone boots up and works just fine.
The bad news - the phone still shows up as C6802 in PC Companion, and does not trigger any update to 4.4.4.
Am not sure where exactly it is picking up the model number from.
I locked bootloader and updated without any problem.
Sent from my C6833 using XDA Premium 4 mobile app
krumbs said:
Yes, that will be the sanest thing to do.
Well, I did go ahead and change all instances of C6802 to C6833 in build.prop. Saved the file, and rebooted.
The good news - the phone boots up and works just fine.
The bad news - the phone still shows up as C6802 in PC Companion, and does not trigger any update to 4.4.4.
Am not sure where exactly it is picking up the model number from.
Click to expand...
Click to collapse
What does it say if you go in model number with the string *#*#7378423#*#* ?
Sent from my C6833 using Tapatalk
Does it bring VoLTE support?
Webpage in my region has also been changed, but update is still nowhere to be seen. Update checker gives about 9 regions that have the 108 available. I have 1275-7448 (Custom BAL) so - still waiting.
BTW, I went through the settings and it appears that nothing is changed...
Sent from my C6833 using Tapatalk
EDIT: I found something, but it's really not that important right now. I found out that clicking into the theme you want to apply it actually shows what the theme is going to change once applied. Next step would be to let us change every single aspect to mix and match several themes...
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SGP561 Bootloop after upgrade, can't get into TWRP

I did the flashtool route of upgrading to 5.1.1 as I have in the past using this guide http://forum.xda-developers.com/xperia-z2/general/4-4-4-creating-rooted-update-package-t2933155
It goes through optimizing apps, then reboots, and repeats this process. I can get into the regular recovery menu with the options to reboots and factory reset by holding volume down, but can't seem to get into TWRP from ZXDualRecovery so I can restore the backup that I made.
Any help would be appreciated. Just want my tablet back up and running.
Where did u find 5.1.1 for spg561? Sorry for not having an answer
platynumx said:
Where did u find 5.1.1 for spg561? Sorry for not having an answer
Click to expand...
Click to collapse
Xperifirm. I got an email from Sony saying it was available.
Varekai said:
Xperifirm. I got an email from Sony saying it was available.
Click to expand...
Click to collapse
Care to link me?I can't find it anywhere. My tablet won't pull it and the Verizon update software says it's up to date.
May be best to wait. That update borked my tablet, but Xperifirm is software that you use to download it.
I've used xperitool,tried to ota,used verizon/Sony upgrade tool, got the same email from Sony, and Googled the hell out of this with no results. I'm convinced there is no 5.1.1 update for this tablet and it was confused with the 5.0.2 update going from verizon internal testing to official ota. The z3 phone and this tablet shared the build name. I don't believe it. With that in mind I think you flashed phone firmware and that's why you are bootlooping.
platynumx said:
I've used xperitool,tried to ota,used verizon/Sony upgrade tool, got the same email from Sony, and Googled the hell out of this with no results. I'm convinced there is no 5.1.1 update for this tablet and it was confused with the 5.0.2 update going from verizon internal testing to official ota. The z3 phone and this tablet shared the build name. I don't believe it. With that in mind I think you flashed phone firmware and that's why you are bootlooping.
Click to expand...
Click to collapse
No it's there. Spent some time with the tablet today, got it back up and running, and it's on 5.1.1.
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Xperifirm finally showed it on my end. Fails flashing the last part. Tablet boots to a screen that says software update failed. Any suggestions?
platynumx said:
Xperifirm finally showed it on my end. Fails flashing the last part. Tablet boots to a screen that says software update failed. Any suggestions?
Click to expand...
Click to collapse
Try re downloading and remaking the FTF, also make sure your on the latest version of Flashtool.
Varekai said:
Try re downloading and remaking the FTF, also make sure your on the latest version of Flashtool.
Click to expand...
Click to collapse
Tried on 3 different pc's using 4 different cables. Same result. Flashed back to the leaked 5.0.2. Guess I'll wait for an ota...
platynumx said:
Tried on 3 different pc's using 4 different cables. Same result. Flashed back to the leaked 5.0.2. Guess I'll wait for an ota...
Click to expand...
Click to collapse
https://www.dropbox.com/s/vuadrd234on6fvr/SGP561_23.4.B.0.319_Verizon.ftf?dl=0
Here's the same FTF I used if you would like to give it a shot.
Thanks for sharing that.
Your welcome. Did it work?
platynumx said:
Thanks for sharing that.
Click to expand...
Click to collapse
OK if your using flashtool to to update then it's likely you are overwriting the custom recovery with the stock one from the ftf so you should flash twrp again after flashing a ota then I would recommend flashing a prerooted firmware from the general section
Varekai said:
Your welcome. Did it work?
Click to expand...
Click to collapse
Yes it did.first try. Thanks again
Varekai said:
https://www.dropbox.com/s/vuadrd234on6fvr/SGP561_23.4.B.0.319_Verizon.ftf?dl=0
Here's the same FTF I used if you would like to give it a shot.
Click to expand...
Click to collapse
Did this file end up working for you? I was on the 5.1.1 and then rooted and later ended up bricking my tablet...the only ftf file I can find is the 5.0.2 internal version and the 4.4.4 kit kat. I've tried making ftf files but whatever I get off xperifirm never shows in the available files box when I'm trying to decrypt. Do you by chance have a stock official 5.1.1 ftf file that is ready to flash? I'm going insane here lol I wish I could make my own files
Yes, and for the user above your post that I shared it for.
Anyone get the bootloader unlocked on the sgp561?
Sent from my SGP561 using XDA-Developers mobile app
We still need to make our own flashable.zip and then we can use the ftf above?

Marshmallow Update Hicare

Hi Guys,
I'm living in Ireland. I heard that honor have started rolling out the update for the 5x to marshmallow. Some people seem to be able to get it through the hi-care app. When I check for an update using the app nothing shows up. On honor's twitter they say roll-out should take around 2 weeks to complete. Just wondering if anyone else hasn't received the update yet?
I don't mind waiting but as people in the uk can get the update right now I'm worried that the update may not be available in my country OTA.
Is there a way to manually flash the update etc.
Also how is it running for you in comparison to lolipop
P.S I have the KIW-L21 model
Thanks
Did u do the B140 update?
I have b140 and i also didn't get the update yet.... let's hope it reaches us soon...
Sent from my KIW-L21 using Tapatalk
I have the same question. I'm from Croatia. Model phone is KIW-L21 B140. I also didn't get any update. When a try to update with Hicare also didn't get anything. Somebody knows when it will be out update for Marshmallow?
Here is the link for marshmallow update guys
https://r.tapatalk.com/shareLink?ur...share_tid=3409390&share_fid=3793&share_type=t
KIW-L21 Marshmallow update link from B140
Sent from my KIW-L21 using Tapatalk
Thank you very much!!! I install marshmallow on my phone. I have one question. Is it normal when a have installed new update, that everything is on my phone? Nothing gets deleted. Every app, picture stay on my phone.
lepi0506 said:
Thank you very much!!! I install marshmallow on my phone. I have one question. Is it normal when a have installed new update, that everything is on my phone? Nothing gets deleted. Every app, picture stay on my phone.
Click to expand...
Click to collapse
Yes it's normal... you might wanna reset your phone for optimal performance
Sent from my KIW-L21 using Tapatalk
Please, can you give a link, or explain how to reset my phone.
lepi0506 said:
Please, can you give a link, or explain how to reset my phone.
Click to expand...
Click to collapse
Just factory reset your phone in backup and restore setting in settings mate
Sent from my KIW-L21 using Tapatalk
Guys a don't know what to say. You really help me. I live in Croatia. And a write on forums in Croatia, nobody replied on my massages. And you help me. I'm really grateful. Thank you very very much!
lepi0506 said:
Guys a don't know what to say. You really help me. I live in Croatia. And a write on forums in Croatia, nobody replied on my massages. And you help me. I'm really grateful. Thank you very very much!
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That's what xda is all about helping each other out
Sent from my KIW-L21 using Tapatalk
Hi
Can screenshot on about phone?
iman32 said:
Can screenshot on about phone?
Click to expand...
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Sure
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Sent from my KIW-L21 using Tapatalk
chubby65 said:
Sure
Sent from my KIW-L21 using Tapatalk
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This rom for KIW-L21C432 But my phone is KIW-L21C185.
This rom is not install my phone.....??
iman32 said:
This rom for KIW-L21C432 But my phone is KIW-L21C185.
This rom is not install my phone.....����
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Click to collapse
I think u have the middle east version as my mobile and its not arrived marshmallow update yet
EDIT 2 : this update should theoretically work on all "Global Europe" devices and I don't think it will with Middle East KIW-L21 (didn't even know there was a specific version for it till a few days ago... ^^).
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Thanks for all the replies guys. Only seeing them Now
chubby65 said:
Sure
Sent from my KIW-L21 using Tapatalk
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Cheers for the help mate.
Does the update have to be installed using recovery?
steve3194 said:
Cheers for the help mate.
Does the update have to be installed using recovery?
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Click to collapse
Has to be stock recovery and unmodified mate
Sent from my KIW-L21 using Tapatalk
chubby65 said:
Has to be stock recovery and unmodified mate
Sent from my KIW-L21 using Tapatalk
Click to expand...
Click to collapse
Do you mind me asking where you bought your phone? I got mine from amazon uk and I have a feeling its not a uk version the build number on mine is KIW-L21C185B140. Update is failing for me. Pretty sure its because of the region code.
steve3194 said:
Do you mind me asking where you bought your phone? I got mine from amazon uk and I have a feeling its not a uk version the build number on mine is KIW-L21C185B140. Update is failing for me. Pretty sure its because of the region code.
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Click to collapse
Got mine from Amazon UK too mate have you got twrp installed
Sent from my KIW-L21 using Tapatalk

Question Xperia 1 III Softbank A101SO issues Downgrading after a crossflash

Hello everyone.
I bought a japanese Xperia 1 III (Softbank version A101SO) with Android 12 and I've searched for the 13 update but it turns out Softbank didn't release Android 13 on this phone yet.
So I decided to flash the KDDI version to it (with newflasher) and it worked.
But the problem is I got a very weak signal, a battery drain and the 4G rarely appears (always H or H+)
I tried to come back to the old original firmware but the phone won't boot after the flashing process (rollback protection)
The phone has a locked bootloader and it says it can't be unlocked so I wonder if you have a solution for me because I lost all hope right know.
If I can just go back to its original firmware (Android 12 from Softbank) that's all that I need right know.
Thak you for your answers.
Unless you unlock your bootloader, otherwise, you cannot go back to Android 12 again. If your phone's config name 'Bootloader unlock allow' is No, then you have to stick around with KDDI Android 13 fw.
FiDra said:
Unless you unlock your bootloader, otherwise, you cannot go back to Android 12 again. If your phone's config name 'Bootloader unlock allow' is No, then you have to stick around with KDDI Android 13 fw.
Click to expand...
Click to collapse
Thanks for your reply! I'll have to stick with it then...
But can I flash the Softbank modem to it to have a better signal coverage?
I think cross flashing is okay but you need to do some search to make sure you flash all needed files to prevent boot loop.
FiDra said:
I think cross flashing is okay but you need to do some search to make sure you flash all needed files to prevent boot loop.
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Click to collapse
crossflashing works but the problem is the Signal and the battery drain.
is there a way to flash other modem files to the phone?
Try newflasher, you can search the forum for the guide.
FiDra said:
Try newflasher, you can search the forum for the guide.
Click to expand...
Click to collapse
Newflasher is the tool to flash the roms.
I know how to use it since I've crossflashed my Xperia 1 III with another region FW using it.
My question is: is there a way to flash different modem files (and other important files) to the phone with a different region rom to fix the signal and battery drain issues?
Samuël_Fab said:
Newflasher is the tool to flash the roms.
I know how to use it since I've crossflashed my Xperia 1 III with another region FW using it.
My question is: is there a way to flash different modem files (and other important files) to the phone with a different region rom to fix the signal and battery drain issues?
Click to expand...
Click to collapse
Yes just keep the .Sin files that you fish to flash and remove the rest from the rom folder. And make sure when prompted by Newflasher to "keep user data".
bentree said:
Yes just keep the .Sin files that you fish to flash and remove the rest from the rom folder. And make sure when prompted by Newflasher to "keep user data".
Click to expand...
Click to collapse
ohh! thanks for your tip!
I want to ask you:
do you know the name of the modem files that control the network?
Samuël_Fab said:
ohh! thanks for your tip!
I want to ask you:
do you know the name of the modem files that control the network?
Click to expand...
Click to collapse
Modem.Sin is the file you are after.
bentree said:
Modem.Sin is the file you are after.
Click to expand...
Click to collapse
So I've successfully flashed the modem sin file but there's a problem with the camera.
It refuses to launch and the Telephoto lenses are moving all the time (with the noise of the lens moving).
But the signal is back at 4G.
Samuël_Fab said:
So I've successfully flashed the modem sin file but there's a problem with the camera.
It refuses to launch and the Telephoto lenses are moving all the time (with the noise of the lens moving).
But the signal is back at 4G.
Click to expand...
Click to collapse
no idea with that one... sorry
bentree said:
no idea with that one... sorry
Click to expand...
Click to collapse
I guess flashing it with other modem sin files don't resolve the issue.
I need to wait for the Softbank Android 13 (if it will be released one day...)
Thanks to you and people on this post, I've been able to flash fw 61.1.E.5.215 into my A101SO and fix mobile connection and camera by flash .sin file from A101SO android 12 fw. If you still struggle with the camera, let me know. I've seen improvement with battery life and mobile signal, the only let down is netflix wont install from playstore nor playback at full fidelity if I install with apk
Samuël_Fab said:
I guess flashing it with other modem sin files don't resolve the issue.
I need to wait for the Softbank Android 13 (if it will be released one day...)
Click to expand...
Click to collapse
Bachtran24 said:
Thanks to you and people on this post, I've been able to flash fw 61.1.E.5.215 into my A101SO and fix mobile connection and camera by flash .sin file from A101SO android 12 fw. If you still struggle with the camera, let me know. I've seen improvement with battery life and mobile signal, the only let down is netflix wont install from playstore nor playback at full fidelity if I install with apk
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what file did you flash for the Camera?
Ainz_Ooal_Gown said:
what file did you flash for the Camera?
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After I succesfully flashed a bootable fw (XQ-BC72_Customized SEA_61.2.A.0.447 for me), I flash these .sin files from A101SO_SoftBank JP_61.1.E.5.215 right after. The camera problem only rise if you also flash modem_X-FLASH-ALL-4BA8.sin
Bachtran24 said:
View attachment 5922171
After I succesfully flashed a bootable fw (XQ-BC72_Customized SEA_61.2.A.0.447 for me), I flash these .sin files from A101SO_SoftBank JP_61.1.E.5.215 right after. The camera problem only rise if you also flash modem_X-FLASH-ALL-4BA8.sin
Click to expand...
Click to collapse
Hi @Bachtran24 if i understood you correctly then you have installed a Dual XQ-BC72 to your single SIM A101so version and then flashed the modem files and it worked for you?.
Can you please exactly tell which modem files you flashed? in the ROM folder there are 3 modem files.sin.
When you flashed modem.sin filers which ROM folder did you use BC-72 or A101so.
I have the same issues i have updated to global Dual ROM and now my A101so is not getting any signals. looking for your help
crazycolor786 said:
Hi @Bachtran24 if i understood you correctly then you have installed a Dual XQ-BC72 to your single SIM A101so version and then flashed the modem files and it worked for you?.
Can you please exactly tell which modem files you flashed? in the ROM folder there are 3 modem files.sin.
When you flashed modem.sin filers which ROM folder did you use BC-72 or A101so.
I have the same issues i have updated to global Dual ROM and now my A101so is not getting any signals. looking for your help
Click to expand...
Click to collapse
Did you see the picture, just flash those 4 from A101SO_SoftBank JP_61.1.E.5.215 folder, delete other. Reply if you cant see the pic, i'll put it in context
Bachtran24 said:
Did you see the picture, just flash those 4 from A101SO_SoftBank JP_61.1.E.5.215 folder, delete other. Reply if you cant see the pic, i'll put it in context
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thank you for your reply. i can see the picture and got the answer that i should use A101SO folder for secondary flashing. thanks!

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