E6853 firmware downgrade - completely stock - Xperia Z5 Premium Q&A, Help & Troubleshooting

My dad has this phone & since upgrading to Nougat has experienced a lot of issues ranging from poor Wi-Fi connectivity, Bluetooth & NFC not working with certain other devices to the mic not working for calls when using loudspeaker.
I've flashed many phones before including HTC & Samsung but never a Sony. From what I've read it's as simple as getting the correct ftf firmware file, making sure the correct drivers are installed & putting the phone into download mode. I'd just like confirmation of this before I go ahead as I don't want to brick his phone.
He has no use for root or an unlocked bootloader so I'm wanting to keep it stock

using FLASHTOOL download the android 6 rom via Xperifirm and flash it in flashmode

Related

[Q] Xperia Pro MK16a / MK16i firmware

Does anyone have a copy of the stock firmware from the Xperia Pro MK16a or MK16i.
I messed up the phone and want to re-flash the stock firmware back into my phone.
I dont know what else to do and I am desperate....
If you have it in ftf it would be great. Please put it up on mediafire to share.
THANKS!!!
First, it should be usefull to know what you did to brick your phone.
Thinking quickly, here are your options:
1. If you damaged the system partition(mtd0), you may restore it with fastboot having a stock one. Also, it may be possible to restore it with from ClockWorkMod recovery(started via fastboot), with an update created from the stock firmware.
2. If you accidentally damaged the kernel, that would be a bit more difficult. Currently, there's no custom kernle for MK16, so you would have to wait until there's one, or recompile the stock kernel from source(SE makes sources available).
If it's the first, I may be able to help you providing my system partition. It's not the stock one, because the first thing I did when I got to root my phone was start Titanium Backup and begin to delete some system applications I considered useless. But I think you could find my system partition useful. Just explain a little more what you did.
Thanks for trying to help.
Basically I flashed another firmware for it and it didnt go as expected.
I cant restore it because now my phone is recognize as another phone so i cant download the stock firmware for my phone via PC Companion.
Mine is a MK16a with all the bloatware from fido.
I dont really care about rooting it or not.
I just wanted to get raid of some of the stock apps so it doesnt take up so much internal memory.
I think what I really need is the stock MK16i firmware and flash it to my phone or if someone got the stock MK16a firmware I can flash it again to get it running again.
If you anyone have any other suggestions please let me know.
Thanks
i also need a mk16i firmware packed as ftf, can someone help?
TeamXperia has MK16's now, so a stock firmware should be coming pretty fast from them.
I think ftf is for kernel & loader, not for system partition....
ichidakira, I managed to make a dump of my system partition, I think that will fix your phone. Note that it's not the original system partition, as I've deleted some of the default apps and changed the bootanimation.
To restore it in your device, follow this steps:
WARNING: This will clear all your data, including (but not only limited to) contacts, sms, applications, configurations, etc.
1. Download & extract this file: http://soporte.opensysperu.com/downloads/system.zip & the Xperia Pro recovery image from FreeXperia Project: http://www.megaupload.com/?d=8L3DC0UQ .
2. Copy the system.img to your sdcard(using any method).
2. With the phone turned off, hold the menu button and connect the USB cable. If windows asks you to install the driver, do it as specified in the thread about rooting Xperia Pro.
3. Open a command prompt on the folder where you have downloaded recovery.img .
4. Run "fastboot boot recovery.img"
5. The phone will turn on and get detected as a ADB device. Also, the CWM menu will appear on the screen, but you will not need it for now.
6. Run "adb shell". Then, run the following commands: (It may take a few minutes)
cat /sdcard/system.img > /dev/mtd/mtd0
exit
7. On the CWM menu, use thew Vol Down key to highlight "Wipe data/factory reset", and then press the power button. Confirm the action if needed.
8. When finished, type "adb reboot" on your command prompt.
Then, your phone should boot normally.
rcummings100 said:
TeamXperia has MK16's now, so a stock firmware should be coming pretty fast from them.
Click to expand...
Click to collapse
Thanks for the info.
Please let me know when they release it.
For anyone looking for mk16i ftf...
http://forum.xda-developers.com/showthread.php?t=1323730
Thanks to Jozinek
MK16i system partition
Guys, could anyone provide me stock or at least his semi-stock system partition, as alvaroag did above? I have rooted xperia pro MK16i (via xperia recovery) and I'm experiencing weird problems after hard reseting my phone. Everything works virtually fine now, but:
- home button works, but doesn't act as home should
- after USB connecting to PC the PC says that my SD card is not inserted (however I can see its content while in the phone)
- PC Companion software can't find the phone
If anyone would have any advice how to solve this, it would be much appreciated also.
Edit: I had rooted this phone month ago and until yesterday there were zero problems. But then suddenly I lost some of my synced contacts from MS Exchange, so I decided to hard reset it and reinstall apps to fix this little issus. And then everything started...
Try with the latest SE firmware:
{PRO}[DEVELOPMENT] - CM7.2.0 - FXP047 FreeXperia Project
At the bottom of the post are the links for the MK16i SEMC 4.0.2.A.0.42 & MK16a SEMC 4.0.2.A.0.42. Select the one according to your device. Flash them with FlashTool. No this will permanently erase all of your user data.
Then, if you want to root it, try with the zergRush exploit: [16/Nov][ROOTING/UNROOTING] Xperia 2011 Easy Rooting Toolkit [v3.0](zergRush Exploit)
If the phone still presents problems, reflash the stock firmware & take it to your service provider for warranty.
Thanks, alvaroag. I was fixing further and further on and ended up with reflashing Jozinek's stock firmware which solved everything. But then, even with virtually out-of-the-box phone, SEUS still denied to update firmware, saying that the phone has altered software. Not sure if anybody really tried to wipe out EVERYTHING from the phone and pretend, that it hasn't ever been rooted or hasn't been did anything else, but I doubt SE repair service can be fooled that much - even stupid updater still sees some difference between my phone (which obviously lost all changes I made to keyboard, root access, everything after successfull revert to stock firmware provided by Jozinek) and regular not altered phone. So to make the story short - now everything works fine, I have virtually brand new phone, rooted via [16/Nov][ROOTING/UNROOTING] DooMLoRD's Easy Rooting Toolkit [v3.0](zergRush Exploit). But on the other hand I really doubt that these changes can be reverted to the state, that SE repair center would not be able to detect them and thus maybe cancel my warranty. Which is a bit sad and I did not expect it.
BTW: What is the procedure now to update my firmware, once SE will release it? SEUS refuses to do it... And for sure I would prefer to keep my data, if possible...
If you have unlocked your bootloader, then you will not be able to use SEUS. Try using PC Companion. Even with the bootloader unlocked, PC Companion will work, as long as you use stock firmware.
alvaroag said:
If you have unlocked your bootloader, then you will not be able to use SEUS. Try using PC Companion. Even with the bootloader unlocked, PC Companion will work, as long as you use stock firmware.
Click to expand...
Click to collapse
Not true that unlocking bootloader automatically stops SEUS from working. I had Alejandrissimo unlock my bootloader remotely via the info in this thread:
http://forum.xda-developers.com/showthread.php?t=1254416
And even with an unlocked bootloader SEUS worked just fine (that is until i flashed to the latest firmware posted on XDA in the Xperia Pro CM thread). But that's only true if you use his exact method. It seems that all other methods do prevent SEUS from working.
But yes, as soon as you've unlocked the bootloader, regardless of the method, your phone's warranty is void. That includes unlocking it the official way via the sony ericsson website! PITA
And technically, if you even root your phone, you've lost your warranty as well.
rcummings100 said:
But yes, as soon as you've unlocked the bootloader, regardless of the method, your phone's warranty is void. That includes unlocking it the official way via the sony ericsson website! PITA
And technically, if you even root your phone, you've lost your warranty as well.
Click to expand...
Click to collapse
Yes sure, but my point was not that this act voids warranty, which is clear and obvious. My point was about the fact that many people in forums are understanding rooting and other hardcore activities in the way, that "if something would go wrong with my phone, I still can revert all changes, reflash it to out-of-the-box condition and send it to repair service, while they will not be able to detect the phone used to be rooted or altered in similar way", but in fact there must be some detection mechanism which in certain circumstates (as is my reflashed phone) will recognize that phone has been rooted in the past. And my phone is now not upgradable by both SEUS and PC Companion.
Not exactly. If you root your phone without unlocking the bootloader(zergRush exploit), then you can reflash it using SEUS or PC Companion & any track of the rooting will disappear. But if you unlock the bootloader, that's permanent. Even if you relock the bootloader, you will not be able to lave it as it was before unlocking, as the DRM keys are deleted when unlocking.
If there's still interest, I have a stock SEMC/MK16a:2.3.4/4.0.2.A.0.58/xf_v3w:user/release-keys phone and I'm yet to start fiddling with it.
If there's anything worth extracting from it just let me know and I'd try.
mk16a stock firmware - wanna unlock phone
hi. i'm totally new to android platform and rooting stuff! i have a xperia pro mk16a which is locked to fido canada. i want to unlock and debrand it. what i have learnt till now is that i can debrand it by flashing it to stock firmware. please help!
about phone:
see attachment
ichidakira said:
Does anyone have a copy of the stock firmware from the Xperia Pro MK16a or MK16i.
I messed up the phone and want to re-flash the stock firmware back into my phone.
I dont know what else to do and I am desperate....
If you have it in ftf it would be great. Please put it up on mediafire to share.
THANKS!!!
Click to expand...
Click to collapse
Did you tried to do it with phone repair menu in pc suite?
-DON'T PLUG THE PHONE!
-go to SUPPURT ZONE
-and in the software update check phone repair
-check mk16 on the phone list and follow the instructions!
Firmware ftf
I have some links to generic firmware but i can not publish links.
If anyone wants me for the requested by pm

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.

Downgrade How-To

I've gotten some PMs on how to downgrade from 4.2.2 (10.3.A.0.423) back to 4.1.2 (10.1.A.1.434 or 10.1.1.A.1.253), and thought I'd go ahead and post the steps for all to use. This works for both locked and unlocked bootloaders, and obviously keeps their state intact. The basic idea here is to use Flashtool to simply flash the stock FTF from Sony, no more, no less. It is the same process as restoring your phone via PCC/SUS/Mac Bridge, with the exception here that Sony isn't forcing the latest firmware on you and thus allowing you to select your choice of firmware version.
Rooting Notice
I know for certain you can root the 434 (4.1.2) firmware via Bin4ry's method, and I know for certain you can root the 423 (4.2.2) via DoomLoRD's method. However, I'm fairly sure you cannot root the 253 (4.1.2) firmware via any available method, unless you update from 434 to 253 via an OTA update...which is no longer available. So, if you need root, flash 434, if not, then 253.
The Standard Disclaimer:
I am not responsible for any damage that may happen to your phone by following these instructions. Do so at your own risk.
What You Need:
Flashtool (Official Site)
Correct FTF that matches your device's customization (e.g. Generic US 1270-7584)
To check your customization, dial *#8#7378423#*#*, Service Info > Software Info
You can search this forum for FTFs posted by fellow users, or get them from here. You can downgrade to 434 or 253, it's your choice. Just keep in mind that if you go back to 434, you won't be able to update to 253 via the OTA, you'll have to use this method again.
Before You Begin:
BACKUP ALL YOUR DATA!! When flashing the stock FTF, your phone is wiped 100% clean, as if right out of the factory. Even if you have a custom recovery installed, that will be gone as well.
Flashing Instructions:
Switch off your phone and make sure the USB cable is unplugged from the computer (leave it attached to the phone)
Make sure all Sony software (PCC, SUS, Mac Bridge) are closed and not running on the computer
With the phone completely off, press and hold the VOLUME DOWN button and plug the USB cable to the computer.
You're not going to see anything happen on the phone, but this will put it in Flashmode
Fire up Flashtool
It should say phone is connected in Flashmode
Click on the lighting bolt icon (Flash Device)
When prompted for Flashmode or Fastboot Mode, select Flashmode (default selection)
Navigate on your computer to where the FTF is stored
Flashtool will then display the details of the FTF
When flashing a stock FTF, make sure you keep Wipe Data/Cache/Appslog checked, and all Excludes unchecked.
Click Flash
At this point, the Flashtool will start the flashing process and should take anywhere between 10-15 minutes
If the Flashtool errors out or crashes, 9 out of 10 times you forgot the Sony software running in the background. Close, and try again.
After it's done, simply unplug the USB cable and start the phone.
The phone might prompt you for an NFC update, followed by a Power Off or Use Phone selection. I usually select Power Off and start the phone back up again to make sure the update completed all the way, but that's just my paranoia
Once if I use flashtool to downgrade firmware, Would I still be able to get updates officially from SONY via SUS or OTA or PCC, or I will have to always use flashtool to update?
Sent from my XPERIA ZL
mangatparamveer said:
Once if I use flashtool to downgrade firmware, Would I still be able to get updates officially from SONY via SUS or OTA or PCC, or I will have to always use flashtool to update?
Sent from my XPERIA ZL
Click to expand...
Click to collapse
Yes u still will be able to get the update from Sony, in fact every time when u will connect to pc will tell u that u have a new update ignore it when a better update will come than u can download it
Sent from my C6506 using xda app-developers app
Yes, like he said
nutzuTo said:
Yes u still will be able to get the update from Sony, in fact every time when u will connect to pc will tell u that u have a new update
Sent from my C6506 using xda app-developers app
Click to expand...
Click to collapse
I know that they will always show update, but they may say "modified software, so can't update". I just want to confirm as this problem happened earlier on my Xperia neo v. I was having unlocked bootloader on that. Or this problem occours only on unlocked bootloaders? Please let me know
Sent via XPERIA ZL
That's only for unlocked bootloaders
mangatparamveer said:
I know that they will always show update, but they may say "modified software, so can't update". I just want to confirm as this problem happened earlier on my Xperia neo v. I was having unlocked bootloader on that. Or this problem occours only on unlocked bootloaders? Please let me know
Sent via XPERIA ZL
Click to expand...
Click to collapse
Thanks so much for taking the time to create this. I just got the ZL yesterday and it was buttery smooth, I then got the 4.2 update notice an hour later, updated and it is not smooth anymore.
I see that you mention two 4.1 versions - .434 and .243 . Which one do you recommend? Honestly I wish I had taken note which one exactly came with my phone out of the box, I want to go back to that but obviously can't verify what it came with since I am on 4.2
THANKS!!
spielnicht said:
I've gotten some PMs on how to downgrade from 4.2.2 (10.3.A.0.423) back to 4.1.2 (10.1.A.1.434 or 10.1.1.A.1.253), and thought I'd go ahead and post the steps for all to use. This works for both locked and unlocked bootloaders, and obviously keeps their state intact. The basic idea here is to use Flashtool to simply flash the stock FTF from Sony, no more, no less. It is the same process as restoring your phone via PCC/SUS/Mac Bridge, with the exception here that Sony isn't forcing the latest firmware on you and thus allowing you to select your choice of firmware version.
Rooting Notice
I know for certain you can root the 434 (4.1.2) firmware via Bin4ry's method, and I know for certain you can root the 423 (4.2.2) via DoomLoRD's method. However, I'm fairly sure you cannot root the 253 (4.1.2) firmware via any available method, unless you update from 434 to 253 via an OTA update...which is no longer available. So, if you need root, flash 434, if not, then 253.
The Standard Disclaimer:
I am not responsible for any damage that may happen to your phone by following these instructions. Do so at your own risk.
What You Need:
Flashtool (Official Site)
Correct FTF that matches your device's customization (e.g. Generic US 1270-7584)
To check your customization, dial *#8#7378423#*#*, Service Info > Software Info
You can search this forum for FTFs posted by fellow users, or get them from here. You can downgrade to 434 or 253, it's your choice. Just keep in mind that if you go back to 434, you won't be able to update to 253 via the OTA, you'll have to use this method again.
Before You Begin:
BACKUP ALL YOUR DATA!! When flashing the stock FTF, your phone is wiped 100% clean, as if right out of the factory. Even if you have a custom recovery installed, that will be gone as well.
Flashing Instructions:
Switch off your phone and make sure the USB cable is unplugged from the computer (leave it attached to the phone)
Make sure all Sony software (PCC, SUS, Mac Bridge) are closed and not running on the computer
With the phone completely off, press and hold the VOLUME DOWN button and plug the USB cable to the computer.
You're not going to see anything happen on the phone, but this will put it in Flashmode
Fire up Flashtool
It should say phone is connected in Flashmode
Click on the lighting bolt icon (Flash Device)
When prompted for Flashmode or Fastboot Mode, select Flashmode (default selection)
Navigate on your computer to where the FTF is stored
Flashtool will then display the details of the FTF
When flashing a stock FTF, make sure you keep Wipe Data/Cache/Appslog checked, and all Excludes unchecked.
Click Flash
At this point, the Flashtool will start the flashing process and should take anywhere between 10-15 minutes
If the Flashtool errors out or crashes, 9 out of 10 times you forgot the Sony software running in the background. Close, and try again.
After it's done, simply unplug the USB cable and start the phone.
The phone might prompt you for an NFC update, followed by a Power Off or Use Phone selection. I usually select Power Off and start the phone back up again to make sure the update completed all the way, but that's just my paranoia
Click to expand...
Click to collapse
---------- Post added at 11:40 AM ---------- Previous post was at 11:25 AM ----------
Ps I forgot to add I do not need to root, I was just curious solely on the two different versions of downgrade and what was best choice if there were different.
Congrats on your new ZL.
Yeah, sadly Sony dropped the ball with the latest update, but some of the blame also falls onto the Android 4.2.2 itself...it wasn't the smoothest. I'm actually testing out the latest 4.3 on my Nexus 7...seems like an improvement.
Anyway, the .434 firmware is Android 4.1.2, where as .423 firmware is Android 4.2.2. So with that said, you need to flashback to 4.1.2 with the .434 firmware, which is what your phone came with, and thus will take your phone back to being buttery smooth
As for rooting, follow Bin4ry's method and you'll be good to go.
radlink14 said:
Thanks so much for taking the time to create this. I just got the ZL yesterday and it was buttery smooth, I then got the 4.2 update notice an hour later, updated and it is not smooth anymore.
I see that you mention two 4.1 versions - .434 and .243 . Which one do you recommend? Honestly I wish I had taken note which one exactly came with my phone out of the box, I want to go back to that but obviously can't verify what it came with since I am on 4.2
THANKS!!
Click to expand...
Click to collapse
Ah thanks so much!!!! I was more referring to this statement you made " 4.1.2 (10.1.A.1.434 or 10.1.1.A.1.253),"
That is what I was confused about
spielnicht said:
Congrats on your new ZL.
Yeah, sadly Sony dropped the ball with the latest update, but some of the blame also falls onto the Android 4.2.2 itself...it wasn't the smoothest. I'm actually testing out the latest 4.3 on my Nexus 7...seems like an improvement.
Anyway, the .434 firmware is Android 4.1.2, where as .423 firmware is Android 4.2.2. So with that said, you need to flashback to 4.1.2 with the .434 firmware, which is what your phone came with, and thus will take your phone back to being buttery smooth
As for rooting, follow Bin4ry's method and you'll be good to go.
Click to expand...
Click to collapse
NP. If you need to root, then you'll want to go with .434 instead of .253.
radlink14 said:
Ah thanks so much!!!! I was more referring to this statement you made " 4.1.2 (10.1.A.1.434 or 10.1.1.A.1.253),"
That is what I was confused about
Click to expand...
Click to collapse
I do not want to root nor need, this is my first android phone that works efficient outside the box and no keyboard lag!!
So basically there are no difference between the two except one you can root and one you can't?
I bought the xperia Z not knowing about the ZL!!! Now to go return the Z :>
spielnicht said:
NP. If you need to root, then you'll want to go with .434 instead of .253.
Click to expand...
Click to collapse
Should I be concerned that my phone gets super hot now? Flashed back to the 434 and notice my bars keep going up and down.
Don't recall that behavior before

[Q] Frustrated Xperia Z1C T-Mobile UK owner.

Hi,
I have the CDA 1280-7858 Sony Xperia Z1 Compact model. I have yet not been able to upgrade my phone to latest lollipop, since T-mobile UK have not released it yet.
My phone is carrier unlocked, but bootloader CANNOT be unlocked, this leaves no possible way for me to add a custom rom , right?
What are my options here? Sit and wait forever or just get a new phone?
As you can see in the attachment, only T-mobile remains on the 14.4.A.0.157 release in the UK carriers.
You can always flash stock or custom stock based lollipop from some other region. You don't need unlocked bootloader for that. There are a couple of them prerooted+dual recovery in general z1c forum.
templeka said:
You can always flash stock or custom stock based lollipop from some other region. You don't need unlocked bootloader for that. There are a couple of them prerooted+dual recovery in general z1c forum.
Click to expand...
Click to collapse
Ok, but this would erase my phone completely right? i would use flashtool to upgrade?
Is t here any reason why its taking so long to get the OTA update? I mean, optimally, i want that one and not really need to bother to reset the phone entirely for this update.
You can always make a backup in recovery (I'm thinking you have a recovery already) just in case you don't like lollipop (I didn't). You lose any app installed and preferences (for sms u can backup those and contacts you can sync with Google account) so you will have to reinstall those. If you want root for your phone you need one of those prerooted ones and those are flashed from recovery usually. Best thing is to read the instructions in those threads.
I don't have recovery mode i think. Since this comes with unlocking bootloader, which i CANNOT on my phone.. (its not possible, not even paid with jinx13).
You don't need unlocked bootloader for recovery. Just go here http://nut.xperia-files.com/ and browse to XZDualRecovery > XZDualRecovery 2.8.15 > Z1C-lockeddualrecovery2.8.15-RELEASE.installer.zip and install that from your PC (with the phone connected to your PC via USB). I think you need to enable USB debugging before doing this and you definitely have to be rooted. You should read around how to install stuff there are some guides and resource threads in General forum.
Edit: Also get the flashable version and store it somewhere safe on your phone. Anytime you flash a new ROM you need to also flash the recovery else you have to connect phone to PC and do the install version and that takes longer.
Thanks templeka, I have been unsuccessful in any attempt to root this phone also.. What would be the best way? it just seems to be locked in all ways possible for me to get this done.
edit: i tried the towelroot selection 3 from file you suggested.. it just stopped after libdvm opened (loljavasucks), and after reboot, i was unable to enter recovery mode. (pressed volume up or down, and there was no light on any diode, at any time)
You need to flash a stock .108 rom, root and install dual recovery.
Towelroot will not work on v157. Follow the guide here http://forum.xda-developers.com/showthread.php?t=2977774
In short you need to flash v108 kernel, root and flash v157 kernel back with Flashtool. Be sure to install the necesary drivers after installing Flashtool (they are in the folder where you installed it).
Sorry for being noob still.. But how do i enter flash mode now? I mean reboot and holding volume down will only enter Safe Mode of the phone. (i think its because i have the wrong kernel?)
Just when i was about to give up.. 14.5.A.0.270 just released on t-mobile.. FINALLY!

Can I flash other region firmware?

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!

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