Can I flash other region firmware? - Xperia Z5 Premium Q&A, Help & Troubleshooting

So I found out that I can use XperiFirm to download any available firmware. I am in Australia and my device is still on 32.3.A.2.33 which is 7.0. So I am thinking to download and flash either Customized SG with 32.4.A.0.160 or Customised UK 32.4.A.1.54. If I do this I dont have to unlock bootloader right? Which also means I get 7.1.1 without loosing DRM keys. Are there anything I am missing? I heard I should disable myXperia, I'd probably just reset phone before doing this to make sure everything went ok.
Edit 1: yup you can. After looking on other Sony devices forums and Reddit it seems that you can flash other regions firmwarle. In the end I used the Customised SG with 32.4.A.0.160. I found that there are slight differences in the UI for example NFC logo is always on at the top when NFC is on and for the signal/data it says LTE instead of 4G. Flash tool was a bit confusing to you use though, and I had to disable windows driver signature check to install its driver.

Ypu can flash any region firmware. Dont worry!

Related

im a noob and i want to flash my phone

I am a proud owner of the AT&T Xperia Ion and am getting sick being unable to download the apps i want and i have read around here i can flash the international firmware so i could have ICS on my phone. Well as a noob to androids i am obviously nervous as to the effects of flashing. so i would like to know the risks of flashing it are. Once the official AT&T firmware is released can i switch to it? Will all the data stored in my phone be erased? Will i be able to use LTE? Will the warranty be voided? i would also like to know if there are other things i should know about, as well as the process in which i can carry out the flashing. thank you everybody
1. Just flash back to stock att ftf, and you should get the update. Or, flash the att ICS ftf when it becomes available.
2. It's a good idea to wipe between flashes, so if you did, all your data will be gone. I backup contacts and calendar through Google, so getting data back for me is easy. App data on the other hand will be gone. Or, risk it and don't wipe, but you will likely get some stability issues.
3. You can get lte.
4. If you flash back to stock before taking your phone for service, there should be no warranty issues. Is you take it in with Chinese firmware, that'll likely be a problem.
Sent from Rooted LT28at with ICS.
misterwhales said:
I am a proud owner of the AT&T Xperia Ion and am getting sick being unable to download the apps i want and i have read around here i can flash the international firmware so i could have ICS on my phone. Well as a noob to androids i am obviously nervous as to the effects of flashing. so i would like to know the risks of flashing it are. Once the official AT&T firmware is released can i switch to it? Will all the data stored in my phone be erased? Will i be able to use LTE? Will the warranty be voided? i would also like to know if there are other things i should know about, as well as the process in which i can carry out the flashing. thank you everybody
Click to expand...
Click to collapse
I'm also a noob in Android. Last weekend flashed ICS on my Xperia, following the procedure for rooting. It took me maybe two hours to get all the instructions and download everything I needed. You´ll basically need the firmwares, Android SDK (the link is in the post with instructions, second one in the thread), Flashtool (the latest Windows version, which comes with the drivers for Ion, is in http://androxyde.github.com/Flashtool/). I followed everything from the instructions, but wasn't getting the same response from the ADB commands, it still worked.
Two things are missing from those instructions:
1. To have hotspot activated, you'll need to first flash the international GB firmware, wiping everything in your device (be sure to make backups of everything you´ll want, don´t trust Google backup).
2. Right after flashing ICS, Flashtool won't recognize your phone, even if you have the USB debugging option on. You'll have to update your PC drivers by going to Control Panel, Device Manager, and choose to have Windows search for updated drivers (while the phone is connected, of course). You´ll know you got it right when Device Manager displays a different name for your phone, and Flashtool is able to tell you the software version. At that point you can run the second part of the rooting procedure.
Mmh...
Hello!
When will be released the official ice cream sandwich for my xperia ion lt28i? (international version, bought from Hong Kong)
No time given really. I am guessing at the same time the US releases their's so will the European (International) Version. So maybe September / October time frame, could be earlier.

[Q] Create official odin image? Or: firmware for drei.at?

Hi.
I got a note 2 and would like to have an odin image with the official state as I bought it before I start tinkering with it (root, flashing rom, etc) so I can restore it if I need to claim warranty service.
The issue is: The firmware is of the austrian mobile operator 3 (www.drei.at) and I did not find an official firmware for it!
Can someone point me to it if it exists (did not find it on http://www.sammobile.com/firmware)?
Else: Is it possible to create an "official" system dump of it that works with odin? So if I restore from that created firmware it restores to the state I bought it without anything changed (no custom firmware counter increased, etc).?
I know there are some guides on how to create odin dumps, but they are rather complicated and I am unclear if I restore from one of those if it counts it as official (does it need to be signed for that and anyone not from samsung even do that?) and does not increase it.
Can you help me?
http://forum.xda-developers.com/showthread.php?t=1951091
You can root your phone and do whatever you want, and whenever you want. You can simply return to official warranty version by following steps in first reply of the link i attached.
Thanks
I don't think you get want I mean:
I know how rooting and flashing and odin works, i've done it lots of times. And i've also returned phones to stock.
Until now however I always had unlocked devices with completely official samsung firmwares, but now I have an oparator specific firmware: that of 3 austria.
I did not find an image for this firmware, so I cannot flash back the correct stock image because I did not find that specific image provided anywhere.
So my question:
- Where do I get the firmware JRO03C.N7100XXALIJ for 3 austria? Is it even available?
- If not: can I create it myself?
On http://www.sammobile.com/firmware the only option sensible that gives me results is the latest 10...
Is there a way to view all firmwares for a device (i.e.: n7100) to make sure mine is not among them?
this site is much better. you won't find that firmware exactly but you find other updates for your specific region!
http://samsung-updates.com/device/?id=GT-N7100

Please identify my SM-T705 build!!!

Hi there,
I have the Samsung Galaxy Tab S 8.4 LTE version, which I purchased through Ebay - I believe it came from Asia somewhere as it showed up with an international adapter for the power supply. It was sold as a "Verizon" model - I ditched that sim card and have been using it with Bell Mobility in Canada.
Recently, I tried to update my firmware using the latest version of Samsung Kies and I'm running Windows 10 latest version. For some reason Kies needs to reinstall the USB driver before performing the update to the firmware and this causes Windows 10 to crash without fail. (This is also happening to my Note 3 - Samsung informs me Kies is not compatible with Windows 10 although it seems to work for everything else - just not the update). Kies doesn't seem to care that I already have the latest drivers installed.
I can't update via the tablet because my device has been "modified" - rooted.
Finally I went to Sammobile for the firmware, however I can't find any US firmware for a compatible carrier under SM-T705. I am debating flashing the Bell Canada firmware, but the model is listed as SM-T705W. In case this is not ok and I need to revert to the original, I'm hoping someone can help me identify my build? The samsung agent offered to identify it but once she discovered it was from outside Canada she said she had no information. So much for Samsung International!
Please help! I'm having battery issues and I'm hoping updated firmware will help, plus I would like to have the latest version of Android. Thanks!
If you're in Canada then just flash the Canadian firmware.
ashyx said:
Cellular south is us
Region XAR
Click to expand...
Click to collapse
Hi there, forgive me for being thick, but how do you tell it's Cellular south, and what do you mean by region XAR? I'm sure that the fellow I bought this unit from flashed US firmware, however I can't find it on the Sammobile site - in fact I can't find any US carrier firmware listed for this model.
As mentioned above, I did find Bell mobility (Canada) firmware listed for the SM-T705W but nothing for the SM-T705.
Further explanation greatly appreciated!
LostinCanada said:
Hi there, forgive me for being thick, but how do you tell it's Cellular south, and what do you mean by region XAR? I'm sure that the fellow I bought this unit from flashed US firmware, however I can't find it on the Sammobile site - in fact I can't find any US carrier firmware listed for this model.
As mentioned above, I did find Bell mobility (Canada) firmware listed for the SM-T705W but nothing for the SM-T705.
Further explanation greatly appreciated!
Click to expand...
Click to collapse
You can flash any firmware for that model, so just flash the Canadian firmware, no point in flashing a us firmware.
ashyx said:
You can flash any firmware for that model, so just flash the Canadian firmware, no point in flashing a us firmware.
Click to expand...
Click to collapse
Ok great. I would like to locate the US firmware though for future use. I travel alot in the US and in the event I need a different carrier's modem... Are the US carriers listed somewhere else or am I blind? http://www.sammobile.com/firmwares/search/SM-T705/
Thanks!
LostinCanada said:
Ok great. I would like to locate the US firmware though for future use. I travel alot in the US and in the event I need a different carrier's modem... Are the US carriers listed somewhere else or am I blind? http://www.sammobile.com/firmwares/search/SM-T705/
Thanks!
Click to expand...
Click to collapse
You have root so install twrp from the development section and do a full back up of your current system.
You can then restore as you please.
Seems no US firmware for the t705.
ashyx said:
You have root so install twrp from the development section and do a full back up of your current system.
You can then restore as you please.
Seems no US firmware for the t705.
Click to expand...
Click to collapse
LOL... ok now I have another problem. I had already downloaded the Bell mobility file from Sammobile and hadn't seen this response - in the meantime I hooked up with Odin and my download failed twice - I don't get it. I just did my Note 3 10 minutes ago without any issues. Rebooted device and odin between both attempts.
Thoughts?
Don't flash anything until you make that full backup with TWRP, trust me it will save a massive headache should you need it.
Download Flashfire from the link below then set your date back to August, run Flashfire then load up the firmware, select the Flash firmware package option.
From the partitions list select system.img and boot.img only.
Under the reboot options select download mode then hit the flash button.
Once it has flashed and booted to download mode you will need to flash a lollipop bootloader (assuming you are flashing lollipop?)
You will find them in the bootloader thread.
After that just reboot the tablet, it will take about ten minutes for it to fully boot.
http://likewaphd.in/filewap-1-load/...2015/FlashFire_Pro_v0.21_-_Likewap.apk-0.html
Uh... ok you lost me early on. I downloaded the file - how do I install it? I remember using the TWRP thing several phones back when I was messing with custom ROMs. I had a problem with recovery and since then have never gone this route - I've been happy with stock rom and root - installed using Odin... sortof the KISS principle.
I can try TWRP, but could you dumb down the instructions a bit - as I mentioned, I'm a bit thick - particularly with some of the terminology! LOL
This is the file I downloaded - yes, Lollipop - I don't understand why I have the Odin Fail - google isn't helping me understand either. I have root, USB debugging is enabled and I followed the same steps as with my Note 3 - the message said write fail.
http://www.sammobile.com/firmwares/download/52301/T705WVLU2BOE4_T705WOYA2BOE4_BMC/ Is this what you mean by bootloader?
TWRP - flash with odin then boot into twrp using POWER + HOME + VOL UP - http://forum.xda-developers.com/gal...p-2-8-6-1-unofficial-sm-t800-805-807-t3074633
Bootloader - http://forum.xda-developers.com/showthread.php?t=3099362
ashyx said:
TWRP - flash with odin then boot into twrp using POWER + HOME + VOL UP - http://forum.xda-developers.com/gal...p-2-8-6-1-unofficial-sm-t800-805-807-t3074633
Bootloader - http://forum.xda-developers.com/showthread.php?t=3099362
Click to expand...
Click to collapse
Ok but those "bootloaders" are custom ROMS are they not? And I don't see my device on the TWRP site - I have the LTE version, it only shows Wifi.
Really all I want to install the Bell stock firmware (assuming it is indeed compatible - SM-T705 vs SM-T75W) I linked to from the Sammobile site and then do Chainfire's auto-root.
Why isn't Odin writing the firmware to my device? I've never had this issue before and I don't see what I might have done differently with this device - it's the first time I've tried to update it, but I had no trouble rooting it with the chainfire auto-root.
LostinCanada said:
Ok but those "bootloaders" are custom ROMS are they not? Really all I want to install the Bell stock firmware (assuming it is indeed compatible - SM-T705 vs SM-T75W) I linked to from the Sammobile site and then do Chainfire's auto-root.
Why isn't Odin writing the firmware to my device? I've never had this issue before and I don't see what I might have done differently with this device - it's the first time I've tried to update it.
Click to expand...
Click to collapse
No they are bootloaders they are required to boot the firmware , roms are the os.
Odin won't flash because certain devices will refuse to flash another regions firmware.
My advice to you is to flash the lollipop bootloader first, to make sure it will flash then flash the firmware with flashfire.
Obviously make the twrp backup first.
ashyx said:
No they are bootloaders they are required to boot the firmware , roms are the os.
Odin won't flash because certain devices will refuse to flash another regions firmware.
My advice to you is to flash the lollipop bootloader first, to make sure it will flash then flash the firmware with flashfire.
Obviously make the twrp backup first.
Click to expand...
Click to collapse
Ok I flashed the bootloader, and then I tried to flash the firmware with Odin again but it still won't do it - write fail again. I've never used flashfire - windows 10 won't open it...
UDATE: Ok I read to transfer the file to the download folder on the tablet, and then install on tablet. So I did that, but when I click on the icon it doesn't run. How the heck do I use this to install the firmware update?
Figured out the date bit, ran Flashfire.... problems during the install - got stuck in boot loop - tried a factory reset - that didn't work... stuck in loop. I think I'm bricked....
Left the default settings in place - very little in the way of instructions - read the bit about not trying to write over protected settings...
And got this:
You're not bricked as long as the tablet starts up and you can boot to Download mode.
I've seen that error with corrupt downloads so not sure why you're getting it.
Reboot to download mode. Just hold POWER + HOME + VOL DOWN until the device restarts and boots to download mode.
Doesn't matter if it's boot looping.
Reflash TWRP and restore the backup you made earlier. You will be back to where you started.
At this point I think the best option is to flash a custom lollipop rom.
There is a very good one I use on my t805 which is practically stock with a bit of bloatware removed.
Its in the development section called sweetrom.
At least one positive is that you were able to flash the lollipop bootloader, so upgrade is not impossible.
I'm definitely able to get to download mode - I was surprised that the factory recovery mode didn't work. I'm wondering if the file from sammobile is corrupted - I used the same file with Flashfire - now I think Odin was trying to save me. I'm downloading the same file again fresh, and it looks like Telus and possibly the other Canadian variants are the same - unless it's the same corrupted file.
I just hope the problem isn't because my phone identifies itself as a straight SM-T705. That is why I asked about that point earlier. There are plenty of straight 1705 options available - just don't know which country would be compatible - particularly for the modem.
I didn't understand how to use TWRP and I've had problems with it in the past (recovery) when I did figure out how to use it and was messing with custom ROMS a couple of years ago. I would really like to get myself back in order with a proper stock ROM and root. This tablet belongs in my car and right now I just want it to work properly - I'm using Torque to resolve some ongoing engine issues and it will suck if I have to go back to using the small screen on my Note 3.
If there is any way to figure out which of those countries for the 705 are compatible with Canadian carriers, in case this Bell firmware is defunct, that would be appreciated.
As well, is that bootloader going to cause any problems with stock firmware? I've already flashed it - does stock firmware come with bootloaders included?
OK before I go any further with this I need you to install twrp and make that back up. Twrp is now very stable.
Twrp will back up some very important partitions namely the Efs and modem. Don't take this warning lightly. The amount of people that have soft bricked their device because they didn't do this.
Boot into twrp then simply select the backup option and make sure the partitions on the left are ticked particularly boot,
Efs and modem.
Now as regards which firmware.
I would forget about installing the Canadian firmware.
It looks like this firmware will only install specifically on a Canadian device.
It doesn't really matter which firmware from which region you install as they are pretty much all the same except for the carrier ones which just add more bloat and some csc specific stuff.
Just go for an international rom. You've already flashed a bootloader from one of these roms so that proves you can flash.
Use odin to flash.
If you have connection issues afterwards then all you need do is restore your modem backup with TWRP.
That's why it's important you do this.
Follow these instructions and we will get you up and running.
Whole again!
Whole again!
For the record, I read elsewhere that it is NOT recommended to flash other letter variants of a model. In the meantime I downloaded all four Sammobile Canadian Carrier files and they appear to be the exact same file and all install attempts failed For anyone else with an actual SM-705W I read in this thread: http://forum.xda-developers.com/galaxy-tab-s/general/t705-lollipop-t3099945 a fellow Canadian was having a problem with those same files. Dunno what happened with him in the end, however I tried one more W file I found elsewhere that appeared to be different but it failed as well.
Based on the comments in the above thread, I flashed the Hong Kong variant for the SM-705 from Sammobile - apparently it was the first firmware widely available and users from several countries posted they had used it successfully. So far it seems to be working ok - after flashing it, I did a factory reset on the device as was also recommended in the above thread. Sure hope the battery life will be better than before - love this tablet but I've never seen a device drain so rapidly! CF-Auto Root restored!
As a side note my Ebay seller did reply to my origins query and was helpful once he realized I wasn't complaining about the device and wanting to return it... LOL. Apparently my unit originated in Singapore and arrived with that firmware along with a Verizon SIM which I never tested. As long as the OS is smooth, and the modem compatible, and unless someone advises a better country variant, I guess I'll stick with this one.
Now just need to get Torque reconfigured!

XZ1 Compact - Pie to Oreo downgrade

Hi all,
I'm in need of some guidance with regards to a downgrade that I'd like to perform.
About 1 week ago the phone updated itself OTA. I don't remember which version was last before this update .. but what I remember is that the download was quite consistent (over 1G) and then the update took a while. Everything went by without any errors, but at the end I got Android Pie ... and I don't like it.
Reading through the forums I found that flashing a Xperia is doable .. with the right care and tools. So I started to get acquainted with newflasher and Xperifirm - but for now not connecting the phone and / or trying anything and here are the questions for anyone who might guide me a bit:
1. the phone is warranty (about 4-5 months old in fact). I believe the latest firmware that it was running with Oreo was 47.1.A.16.20-R6B. Reference = h**ps://xpericheck.com/cda/1310-4373. I don't see that version in Xperifirm => how can I get access to it for re-flashing?
2. as far as I read, I don't need to root it or unlock the boot loader. Just flashing would be enough to go back one firmware "edition".
3. backing up user data does not interest me so much. I have a list of all apps that are currently installed and within a few hours of tinkering I could get them all re-installed.
4. Would the process of downgrading be visible afterwards? - i.e. warranty would be "bye-bye", right?
.. any other comment / note / reference or observation is highly appreciated.
Best wishes!
metalik said:
Hi all,
I'm in need of some guidance with regards to a downgrade that I'd like to perform.
About 1 week ago the phone updated itself OTA. I don't remember which version was last before this update .. but what I remember is that the download was quite consistent (over 1G) and then the update took a while. Everything went by without any errors, but at the end I got Android Pie ... and I don't like it.
Reading through the forums I found that flashing a Xperia is doable .. with the right care and tools. So I started to get acquainted with newflasher and Xperifirm - but for now not connecting the phone and / or trying anything and here are the questions for anyone who might guide me a bit:
1. the phone is warranty (about 4-5 months old in fact). I believe the latest firmware that it was running with Oreo was 47.1.A.16.20-R6B. Reference = h**ps://xpericheck.com/cda/1310-4373. I don't see that version in Xperifirm => how can I get access to it for re-flashing?
2. as far as I read, I don't need to root it or unlock the boot loader. Just flashing would be enough to go back one firmware "edition".
3. backing up user data does not interest me so much. I have a list of all apps that are currently installed and within a few hours of tinkering I could get them all re-installed.
4. Would the process of downgrading be visible afterwards? - i.e. warranty would be "bye-bye", right?
.. any other comment / note / reference or observation is highly appreciated.
Best wishes!
Click to expand...
Click to collapse
There is a post in different thread that should answer all of your questions. I couldn't write it better myself, so here you go https://forum.xda-developers.com/xperia-xz1-compact/development/help-t3889845/post78673359
I hope it helps.
Hello,
Thanks for the quick reply.
For sure it confirms my understanding of the process.
Would there by any chance to find my Oreo 8 previous firmware (47.1.A.16.20) but for my "Customized DE" version?
It intrigued me that Xperifirm has just the latest one.
metalik said:
Hello,
Thanks for the quick reply.
For sure it confirms my understanding of the process.
Would there by any chance to find my Oreo 8 previous firmware (47.1.A.16.20) but for my "Customized DE" version?
It intrigued me that Xperifirm has just the latest one.
Click to expand...
Click to collapse
I don't think there will be any difference between customised DE and customised UK, there will be VoLTE and fingerprint enabled.
If you have to start asking other xda users for historical firmware then you can't guarantee its validity.
All the firmwares on Xperiafirm are direct from Sony servers.
Didgesteve said:
I don't think there will be any difference between customised DE and customised UK, there will be VoLTE and fingerprint enabled.
If you have to start asking other xda users for historical firmware then you can't guarantee its validity.
All the firmwares on Xperiafirm are direct from Sony servers.
Click to expand...
Click to collapse
I secured the Oreo firmware (customized UK) and the Pie firmware (customized DE) .. using xperifirm. I downloaded Pie just to have the current release that's running on the phone nearby, in case any of my attempts go bad and I'd need to restore it.
By chance, I have for about 2 weeks the possibility to have a non-branded original "Customized UK" XZ1c. As far as I've seen, there 1 app only that's different compared with my original customized DE. I might flash this one to Oreo and back to Pie ... just to learn the process ... and only afterwards to get to work on mine.
I also took my time to look around the web before jumping into flashing.
There are topics which I don't quite grasp yet .. like DRM .. or attest keys.
The thing is that I don't want to break anything in doing this downgrade to Oreo. I don't need to root it, to unlock the boot loader, to break any X-Reality or other functionality. I'm truly amazed by the battery life, btw: I get 3 1/2 days plus with Stamina activated non-stop. The phone is very snappy even with Stamina ... and that's another issue: by downgrading, I wouldn't like to ruin anything of the battery management internal apps / features.
Another thing is this: i don't intend to preserve any data. Whatever I have as apps, currently, will be backed-up and re-installed from scratch + restore of personal data.
I'm now at the point of going through:
1. flashing with flash tool + xperifirm
OR
2. flashing with newflasher.
Basically, I'm trying to understand what the differences (risks) are and what's the safest to use.
Any advice from the XDA community is welcome on this one.
Best wishes,
@metalik download the firmware with xperifirm and from settings select to decrypt/decompress (don't remember how it is). Then delete all .ta files from the folder and persist*.sin (to avoid losing android attest keys and flash with newflasher.
Flashtool has some problems with newer phone models so it's not recommended for xz1c.
the right question would be, how to get the latest security patches but staying with oreo?
vofferz said:
@metalik download the firmware with xperifirm and from settings select to decrypt/decompress (don't remember how it is). Then delete all .ta files from the folder and persist*.sin (to avoid losing android attest keys and flash with newflasher.
Flashtool has some problems with newer phone models so it's not recommended for xz1c.
Click to expand...
Click to collapse
gentlemen,
your input is highly appreciated.
aside from the persist*.sin and all .ta files .. should I take care of anything else?
P.S. I followed this tutorial (link) and it clearly indicates that warranty would not be voided if I would attempt such a re-flashing. Is it true?
P.S. the last question in the thread remains valid: how to apply the upcoming patches on top of Oreo? .. can those be obtained and flashed in a similar way? ... I doubt it would be a good approach because Sony is supposed to take the Google patches and make sure they integrate properly in their Android customization ...
metalik said:
I secured the Oreo firmware (customized UK) and the Pie firmware (customized DE) .. using xperifirm. I downloaded Pie just to have the current release that's running on the phone nearby, in case any of my attempts go bad and I'd need to restore it.
By chance, I have for about 2 weeks the possibility to have a non-branded original "Customized UK" XZ1c. As far as I've seen, there 1 app only that's different compared with my original customized DE. I might flash this one to Oreo and back to Pie ... just to learn the process ... and only afterwards to get to work on mine.
I also took my time to look around the web before jumping into flashing.
There are topics which I don't quite grasp yet .. like DRM .. or attest keys.
The thing is that I don't want to break anything in doing this downgrade to Oreo. I don't need to root it, to unlock the boot loader, to break any X-Reality or other functionality. I'm truly amazed by the battery life, btw: I get 3 1/2 days plus with Stamina activated non-stop. The phone is very snappy even with Stamina ... and that's another issue: by downgrading, I wouldn't like to ruin anything of the battery management internal apps / features.
Another thing is this: i don't intend to preserve any data. Whatever I have as apps, currently, will be backed-up and re-installed from scratch + restore of personal data.
I'm now at the point of going through:
1. flashing with flash tool + xperifirm
OR
2. flashing with newflasher.
Basically, I'm trying to understand what the differences (risks) are and what's the safest to use.
Any advice from the XDA community is welcome on this one.
Best wishes,
Click to expand...
Click to collapse
First take a screenshot of your current keystore status by typing this in the dialler *#*#7378423#*#*, then go to Service tests or Service info -> Security
I used newflasher since it's the last updated software for flashing.
Extract your ftf if required, put only the required files to downgrade in newflasher's folder. For me I only used kernel, system, userdata and cache.
Boot to flash mode, flash using newflasher, reboot and done! Make sure your keystore is intact by comparing the status of all keys with your screenshot.
I've used this method to downgrade temporarily, get temp root, backup my TA partition and then go back to current firmware. All keys intact.
metalik said:
gentlemen,
your input is highly appreciated.
aside from the persist*.sin and all .ta files .. should I take care of anything else?
P.S. I followed this tutorial (link) and it clearly indicates that warranty would not be voided if I would attempt such a re-flashing. Is it true?
P.S. the last question in the thread remains valid: how to apply the upcoming patches on top of Oreo? .. can those be obtained and flashed in a similar way? ... I doubt it would be a good approach because Sony is supposed to take the Google patches and make sure they integrate properly in their Android customization ...
Click to expand...
Click to collapse
I would flash everything else but the .ta and persist*.sin to ensure it works as intended with all files from the firmware you're using. Of course that resets all your userdata, but I guess a downgrade would require that anyway.
Warranty should be just fine - you're still just using official Sony firmware without any modifications to the device or system.
I don't think it will be possible to stay in official Oreo fw with locked bootloader and get recent security patches.
Sony will most probably implement the new patches only into the latest fw version - and that's Pie.
And if someone would make a custom rom with the latest patches on Oreo, you won't be able to install it with a locked bootloader.
Hello again,
what's the impact of flashing persist*.sin ... I believe that's connected with the attest keys, right?
Later edit: I downgraded from Customized DE Pie to Customized UK Oreo. I used newflasher, deleted all *.ta from the root & boot folder ... but by mistake I forgot about the one small persist*.sin file.
Long story short: yes, leaving persist*.sin file in the folder and flashing with newflasher destroyed the Attest keys (I get them as NOT provisioned).
The phone seems to work without problems nevertheless. I re-flashed to an older Customized DE Pie and got the last valid OTA update. Going back to Customized UK Oreo did remove everything from the Service Tests > Security (it showed "none"). But on that the Xperia Companion did the trick (software repair). So it's back on the initial Customized UK Oreo - just attest key shows NOT provisioned ... so
Lessons learned: /*.ta + /persist*.sin + /boot/*.ta must be removed before flashing with newflasher.
Hey, sorry to bring up this old thread but I don't suppose you still have a copy of 16.20? I've been looking for a working copy of it everywhere and I'm getting desperate
Joecalone said:
Hey, sorry to bring up this old thread but I don't suppose you still have a copy of 16.20? I've been looking for a working copy of it everywhere and I'm getting desperate
Click to expand...
Click to collapse
Hey,
sorry for the late reply ...
I kept everything that I (historically) downloaded with Xperifirm ...
I just checked and one folder is this "G8441_Customized UK_1310-6856_47.1.A.16.20_R18B" ... about 2.55 GB in size.
the content of fwinfo.xml is this:
<?xml version="1.0" encoding="utf-8"?>
<fwinfo>
<project>Lilac</project>
<product>Xperia XZ1 Compact</product>
<model>G8441</model>
<market>United Kingdom</market>
<operator>Customized UK</operator>
<swId>1307-7511</swId>
<swVer>47.1.A.16.20</swVer>
<cda>1310-6856</cda>
<cdfVer>R18B</cdfVer>
<fsVar>GENERIC</fsVar>
</fwinfo>
and update.xml is this:
<?xml version="1.0" encoding="utf-8"?>
<UPDATE>
<SYSTEMPARTITIONIMAGE>partition.zip</SYSTEMPARTITIONIMAGE>
<BOOT>boot.zip</BOOT>
<NOERASE>appslog_X-FLASH-ALL-C93B.sin</NOERASE>
<NOERASE>diag_X-FLASH-ALL-C93B.sin</NOERASE>
<NOERASE>ssd_X-FLASH-ALL-C93B.sin</NOERASE>
<NOERASE>Qnovo_X-FLASH-ALL-C93B.sin</NOERASE>
<FACTORY_ONLY>persist_X-FLASH-ALL-C93B.sin</FACTORY_ONLY>
<NOERASE>userdata_X-FLASH-CUST-C93B.sin</NOERASE>
<SIMLOCK>simlock.ta</SIMLOCK>
<NOERASE>cust-reset.ta</NOERASE>
<NOERASE>master-reset.ta</NOERASE>
<RESETNONSECUREADB>reset-non-secure-adb.ta</RESETNONSECUREADB>
<NOERASE>reset-wipe-reason.ta</NOERASE>
</UPDATE>
in a nutshell: I can zip the folder and find a way to send it to you.
Best regards,
Joecalone said:
Hey, sorry to bring up this old thread but I don't suppose you still have a copy of 16.20? I've been looking for a working copy of it everywhere and I'm getting desperate
Click to expand...
Click to collapse
I have my copy of 16.20 and related firmware. They are all Generic Latin America versions.
Xperia XZ1 Compact 47.1.A.16.20 Firmware Search
metalik said:
in a nutshell: I can zip the folder and find a way to send it to you.
Click to expand...
Click to collapse
Shahnewaz said:
I have my copy of 16.20 and related firmware. They are all Generic Latin America versions.
Click to expand...
Click to collapse
Great! I have also been searching desperately for a G8441 47.1.A.16.20 firmware. The country doesn't matter.
If either of you are able to send a zip, I would love to host it on my drive for anyone else who comes looking.
@cynthi4 Customized NOBA (nordic/baltic) latest Oreo: http://aeitis.org/xz1c/
It's downloaded and decrypted via xperifirm and zipped.
I'll keep it there for a while, but might remove soon.
cynthi4 said:
Great! I have also been searching desperately for a G8441 47.1.A.16.20 firmware. The country doesn't matter.
If either of you are able to send a zip, I would love to host it on my drive for anyone else who comes looking.
Click to expand...
Click to collapse
Here you go:
https://bigboidrive.duckdns.org/nextcloud/s/ZW4FQmqBE8Dfcp2
Hello, I just got a xz1c and I'm on 47.1.a.2.281. I haven't updated because of reported battery drain issues. Should I stick with this? Do you recommend pie at all? If not, what's the most stable build you'd recommend?
moist_line said:
Hello, I just got a xz1c and I'm on 47.1.a.2.281. I haven't updated because of reported battery drain issues. Should I stick with this? Do you recommend pie at all? If not, what's the most stable build you'd recommend?
Click to expand...
Click to collapse
Unless you have any specific issues with Oreo or see some advantage with upgrading to Pie, I wouldn't. I am not a big fan of Pie and went through this downgrade to 47.1.A.16.20 to avoid it. If you're interested in custom ROMs, I am running LineageOS 15.1 on my xz1c and it's been great!
That's strange. Being still happy with my locked device, I've always regretted switching to pie so today I actually did the whole process to restore Oreo: downloaded the latest Costumized NOBA oreo the user few posts above linked, deleted *persist.sin and every *.ta files in the folder (even the one inside boot folder), run newflasher and then reboot. Too bad I found stock camera broken
I re-checked multiple times searching for those *.ta files to be sure to avoid this issue, but that's it: I got Oreo but now I have lost stock camera and who knows what else.
Does it mean I've lost those functionality forever? Is there any way to restore stock camera? Happy to see this thread still active

Question Convert back to T-Mobile firmware? + Additional Questions

This may seem like a weird question, but is there is way to convert back to the T-Mobile firmware? Mostly I would like to avoid having to install the modem manually with every update. If this is no longer the case and there is a permanent modem solution then that's all I would need. I found a lemonade tar.gz for the T-Mobile firmware supposedly, however, I don't know how to make that a installable ROM. The link is a github link here, OnePlus 9 Pro Firmware. I've never swapped off of the carrier firmware and had to manually reinstall the modem with every update before. The most annoying part of that for me would be keeping the bootloader unlocked. That's only a minor issue for me as I play Pokemon Go and unlocked bootloader/root can cause issues with that. I don't generally tweak my phones much anymore. I prefer the non carrier ROM to have more current updates. To recap, is it possible to either go back to T-Mobile ROM or is a permanent modem fix for the conversion?
MSM is the easiest way. Just use the MSM tool for LE2127 and you'll be on your way.
I have a flash-all script that you put in a fastboot flashable stock rom zip, and it'll make it so the radio (modem) persists through OTA's. Just gotta dig around for it and see what I did with it.
Thank you both. If I could get back to T-Mobile firmware then swap back to global again that would be great. I think I may be up the proverbial creek though. In my search I came across what seems like an older thread first and I used the India MSM to flip to global. This unfortunately means the T-Mobile MSM is unable to flash to my phone as it sees it as an India phone. I found the other global MSM, and I am able to see the Target directory and choose O2, however, the MSM fails to download. Param Preload error, device not match image.
I've made peace with not being able to get back to T-Mobile firmware, I may have to research the persistent modem more for a fix that will work with India. Is there a modem install for OOS12 that doesn't brick the phone? I use the ones I have from the T-Mobile files, and they work fine for OOS11, but they immediately brick 12 after install.
Bumping this post to ask again about the modem for Android 12. Also, my Bluetooth audio cuts in and out, it's very crackly. This only started after jumping from the T-Mobile ROM.
Edit: Also the voicemail doesn't show in the Phone app. Voicemail service is listed as "Your Carrier" and I can't do anything with it. There are no options that I can toggle at all.
I was looking at the repo of builds for the 9 Pro. I see there is an Android S for all regions in there. Could that possibly change the region of the firmware to, more or less, not associated anywhere and allow a restore to the T-Mobile firmware?
I'm not entirely sure how, but I did manage to get off of the India firmware and onto the EU firmware. At least from there I should be able to get the persistent modem. Working on that process now.
All right, everything has been running fine on the EU firmware, the only thing I'm still having an issue with is Bluetooth. Not connectivity at all, just on phone calls and in one vehicle for audio. It's incredibly choppy. It didn't used to be an issue, it only started after I left the T-Mobile firmware. Is there something I need to flash for the Bluetooth or a setting I'm missing?

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