Which firmware version is best - Xperia Z General

In regards to consistently early in the release of new firmware and secondly the bloatware included. I originally was on vodafone uk and switched on to uk generic but i want out after the delay of this update. And could someone clear up whether there actually is a global generic rom as that would be prefered, thanks.

frankie99969 said:
In regards to consistently early in the release of new firmware and secondly the bloatware included. I originally was on vodafone uk and switched on to uk generic but i want out after the delay of this update. And could someone clear up whether there actually is a global generic rom as that would be prefered, thanks.
Click to expand...
Click to collapse
they are all the same... same kernels etc,, may differ only in regions it releases..
just be sure you do not cross flash, always flash FW of ur model C660x /// C650x
also if you want to debrand of course get the global version.. or specifically FW release on your region

julianalexander said:
they are all the same... same kernels etc,, may differ only in regions it releases..
just be sure you do not cross flash, always flash FW of ur model C660x /// C650x
also if you want to debrand of course get the global version.. or specifically FW release on your region
Click to expand...
Click to collapse
Like i said i have debranded to generic uk but the update just isnt coming, downloading a ftf labeled global now, will give it a try.

Thread Closed, this is just the same as which is the best rom threads, they are not allowed.

Related

Help with firmware

So I've learned that I've got the XWKDC firmware which is apparently the oldest one.
I've been having a rebooting issue with the SGS2 phone as described here:
http://forum.xda-developers.com/showthread.php?t=1099121
I thought that maybe installing the latest firmware might resolve the issue.
So my question is this:
1. Is XXKE4 the latest firmware? That's what I can understand from this thread:
http://forum.xda-developers.com/showthread.php?t=1075278
2. Is there any reason why I shouldn't upgrade?
3. My phone isn't rooted and I don't want to root it atm. Is there a way for me to backup everything in case something goes wrong so that I can just restore it to it's current state?
4. How come some people are getting the updates through Kies and some people don't? Why can't I update through the software?
Thank you for helping
having the same issue with kies would love for someone to confirm
matanc1 said:
1. Is XXKE4 the latest firmware? That's what I can understand from this thread:
KE7 latest
2. Is there any reason why I shouldn't upgrade?
No
3. My phone isn't rooted and I don't want to root it atm. Is there a way for me to backup everything in case something goes wrong so that I can just restore it to it's current state?
No
But you can lok for a copy of original firmware some are posted in dev section
4. How come some people are getting the updates through Kies and some people don't?
Any Kies update is down to the phone provider and if they have passed the firmware and altered it or are not going to upgrade that firmware .
jje
Click to expand...
Click to collapse
What do you mean phone provider?
Do you mean my carrier? If not please explain
Sent from my GT-I9100 using XDA App
Someone provided you with the phone .
A seller of phones or a network .
O2 phone Vodaphone phone 3 phone Orange phone .
Product code is tied to the original provider of the phone other codes are also taken from the phone to provide Kies with information to find your phones upgrade .
EXAMPLES
I9100XWKE1/I9100XEUKD1/I9100XXKDJ/I9100XWKE1 Generic UK
I9100XWKE2/I9100O2UKE1/I9100XXKDJ/I9100XWKE2 O2 UK
I9100XWKE1/I9100CPWKD1/I9100XXKDJ/I9100XWKE1 Carphone Warhouse UK
I9100XWKDD/I9100OXXKDC/I9100XXKDH/I9100XWKDD Nordic NEE
I9100XWKE2/I9100OXXKE2/I9100XXKDJ/I9100XWKE2 German DBT
I9100XWKE7/I9100XEUKD1/I9100XXKE4/I9100XWKE7 Latest Generic UK (XWKE7)
I9100XWKE2/I9100XENKE1/I9100XXKDJ/I9100XWKE2 Belgium, unbranded
I9100XWKE1/I9100H3GKD4/I9100NEKD5/I9100XWKE1 Three UK
I9100XWKE2/I9100OXXKE2/I9100XXKDJ/I9100XWKE2 Latvia SEB
unbranded
I9100BUKE1/I9100VODKE2/I9100BUKE1/I9100BUKE1 Vodafone UK
jje

[Q] Xperia arc s - android updates question

Hi, i just ordered an xperia arc s,bafter telling myself ill never buy a non google experience phone due to update issues with non google phones, cos the arc s just looks so nice and distinguished. So now i have a question about how updates work.
As far as i know from experience, updates are carrier based. For example i had a lg optimus before this, and its european version was slightly lagging behind with bug fix updates than my us carrier version, and short of custom rom, there was no way to oficially update the software to eu version.
With the arc s, my phone is unlocked, internstional version, bought off amazon. As far as i can tell its similar to the ones SE sells on its website which arent locked to any specific carrier. How do the updates on these official carrier free sim unlocked phones work? Are they quicker since they are not carrier dependent? Or are they on European schedule since this is an european phone? Im looking forward to ics and hope i get it soon,bso if someone could educate me id appreciate it..
Non carrier phones get it faster than branded ones.
ICS will come in April to Arc (S)
Sent from my iPad 2 using Tapatalk
Flash whatever firmware you wish mate.
First thing I did was erase the branded fw and flash a generic fw.
Sent from my Arc via transwarp beacon.
Lord Takyon said:
Flash whatever firmware you wish mate.
First thing I did was erase the branded fw and flash a generic fw.
Sent from my Arc via transwarp beacon.
Click to expand...
Click to collapse
Ive read guide upon guide of flashing different firmware, but for the life of me just can never figure it out. So for now im staying away fromm it. I actually think sonys android skin is pretty nice. Once sony leaves behind the device from updates then sure ill flash a different firmware, for now though the convenience of ota uodates, which are available for official firmwares but not for hacked ones, is too much to give up.
There's nothing wrong with the se skin, I prefer modded stock roms to miui/cm7. The branding is from the carrier, but if yours is a generic rom then there shouldn't be much to remove. Mines was sim-free but there are still delays to updates region-wise, which is why I unlocked my bootloader. Flashing roms is pretty straightforward once you have flashtool/fastboot/cwm.
sinkster©
zanky said:
Ive read guide upon guide of flashing different firmware, but for the life of me just can never figure it out. So for now im staying away fromm it. I actually think sonys android skin is pretty nice. Once sony leaves behind the device from updates then sure ill flash a different firmware, for now though the convenience of ota uodates, which are available for official firmwares but not for hacked ones, is too much to give up.
Click to expand...
Click to collapse
Use flashtool, it is really simple. Just go slow the first time so you don't make any errors.
Sent from my Arc via transwarp beacon.
So i just received my phone in canada (Lt18i), the international version, since im not using it in canada, its a gift for someone in europe. The box was sealed when i got it, and it said for sale in france, and it has a bunch of crap installed apps like canal+, warnervod, etc. does this mean this is specific to some carrier and thu would have carrier dependent updates? I was really hoping since it unlocked i wouldnt have all this junk on it. Itmdoesnt have any references though to any carrier in the documentation, neither does it have any carrier specific apps i can see. The version on it is 0.42 and it says no updates available. I did read about some 0.62 version out there.
So i have a few questions off topic:
- can i remove the crapware without rooting my phone? I tried es explorer but it tells me uninstll not successful for those apps.
- i did a factory reset the first time, and now the default pictures thwt came with it to show off the beautiful screen are also gone. I found the default ringtones and notificwtion by searching but have not found the default pics. Anybody got a source as to where to find these?
- if i want to stick with the sony software and sony updates, what is the downside of rooting my phone just to delete those bad apps? I read somewhere i lose ota update absility? True? Also can i root, delete the apps, and then unroot?
- what is the difference between simply rooting the device, and unlocking the bootloader, i thought they were both the same
Thanks
zanky said:
...
So i have a few questions off topic:
- can i remove the crapware without rooting my phone? I tried es explorer but it tells me uninstll not successful for those apps.
Click to expand...
Click to collapse
No.
zanky said:
- i did a factory reset the first time, and now the default pictures thwt came with it to show off the beautiful screen are also gone. I found the default ringtones and notificwtion by searching but have not found the default pics. Anybody got a source as to where to find these?
Click to expand...
Click to collapse
If someone doesn't have them zipped already, I can probably find them on my phone and upload them.
zanky said:
- if i want to stick with the sony software and sony updates, what is the downside of rooting my phone just to delete those bad apps? I read somewhere i lose ota update absility? True? Also can i root, delete the apps, and then unroot?
Click to expand...
Click to collapse
You do NOT lose OTA update abilities as long as you don't modify any system apps/files. e.g. notifications bar, battery indicator, etc.
Updates are based on whatever firmware you have on the phone.
e.g. I flashed my Rogers arc to a generic USA firmware. It typically gets updated 2-3 weeks before Rogers since they have to do their customization to it. Similarly, users will flash an international firmware or another region's if that region has released an update.
You can flash ANY firmware onto ANY arc and still get 3G in its coverage zone. (All firmwares contain BOTH software radios: i, a. However, HARDWARE is fixed: "a" radio, "i" radio and will ONLY get 3G in their respective coverage zones.)
That is, you can flash an "i" firmware onto an "a" phone and still get 3G in an "a" zone.
However, this does NOT work in reverse. You CANNOT flash an "i" firmware to get "i" 3G in an "i" zone on an "a" phone.
zanky said:
- what is the difference between simply rooting the device, and unlocking the bootloader, i thought they were both the same
Thanks
Click to expand...
Click to collapse
Rooting = deeper access to the software on the phone. Does NOT allow you to load recoveries like ClockWorkMod or load non-Sony firmwares.
Bootloader unlocking (either paid or free) allows custom firmwares, overclocking, etc.
Flashing a (generic) firmware is quick and painless:
Backing up your current firmware:
Rooting:
Bootloader unlock process & FAQs:
You have no idea how helpful your info and those videos have been!! I think im actually going to attempt the generic rom thing especially because it says i dont even need to be rooted. And the vidos make it ridiculously easy to do it. After half a dozen guides this demystifies the whole process.
So just to confirm, if i update to a generic other rom, ill still be able to get ota updates based on that region? In your opinion which rom is the best for an lt18i? And by best i mean the one i can expect quickest updates on and with least amount of bloatware, cos i doubt there are or differences in them.European, north american. Or global generic?
Btw im on firmware 0.62 anything special i need to consider before attempting this?
This page has links to firmware for lt18i but no global. And the uk version is older. Should i just flash The uk version even though its older and then ota update?
Regarding the stock photos, would be awesome if you could zip and upload to your mediafire page, maybe other people can find them useful too.
P.s. your donate button is broken paypal says theres an issue with your email address.
BluechipJ said:
Updates are based on whatever firmware you have on the phone.
e.g. I flashed my Rogers arc to a generic USA firmware. It typically gets updated 2-3 weeks before Rogers since they have to do their customization to it. Similarly, users will flash an international firmware or another region's if that region has released an update.
Click to expand...
Click to collapse
Ifna bump is acceptable, bump.
zanky said:
You have no idea how helpful your info and those videos have been!! I think im actually going to attempt the generic rom thing especially because it says i dont even need to be rooted. And the vidos make it ridiculously easy to do it. After half a dozen guides this demystifies the whole process.
So just to confirm, if i update to a generic other rom, ill still be able to get ota updates based on that region? In your opinion which rom is the best for an lt18i? And by best i mean the one i can expect quickest updates on and with least amount of bloatware, cos i doubt there are or differences in them.European, north american. Or global generic?
Click to expand...
Click to collapse
Typically, Nordic gets updates first because Ericsson is Swedish. (From past observations, it typically goes Nordic, German, Hong Kong, UK, Asia, North America.)
zanky said:
Btw im on firmware 0.62 anything special i need to consider before attempting this?
This page has links to firmware for lt18i but no global. And the uk version is older. Should i just flash The uk version even though its older and then ota update?
Click to expand...
Click to collapse
Nope. There isn't anything you need to "do". If you're concerned about data, use a backup program such as Sony's original Backup & Restore that came with the X10 (still works). (http://jp1.ca/androidstuff)
This link should have the latest "i" version: http://forum.xda-developers.com/showthread.php?t=1330314
zanky said:
Regarding the stock photos, would be awesome if you could zip and upload to your mediafire page, maybe other people can find them useful too.
Click to expand...
Click to collapse
Which folder(s) are you looking for?
zanky said:
P.s. your donate button is broken paypal says theres an issue with your email address.
Click to expand...
Click to collapse
Thanks. I'll update it!
The link you sent me only has a generic world for lt18i. This other thread i read though said that there is no such thing as generic world, and its just called that but its always for some region of the other. (http://forum.xda-developers.com/showthread.php?t=1210776&page=3)
Not sure how accurate that is but i dont see the nordic one on the link you sent me anyway
Also another thread said that there will always be 8-9 bloatware apps on any firmware such as canal+, warner vod, etc. is this true or false?
Lastly, say i find an older version of the nordic flash file, can i just flash that instead of the 0.62 and then just get an ota update? I didnt see france on your list of status of updates, any idea where that is?
As for pictures, not sure what folder but i believe there were some stock pics that came with the phone to show off the home screen photo widget. If you dont know what im talking about dont worry about it.
BluechipJ said:
Typically, Nordic gets updates first because Ericsson is Swedish. (From past observations, it typically goes Nordic, German, Hong Kong, UK, Asia, North America.)
Nope. There isn't anything you need to "do". If you're concerned about data, use a backup program such as Sony's original Backup & Restore that came with the X10 (still works). (http://jp1.ca/androidstuff)
This link should have the latest "i" version: http://forum.xda-developers.com/showthread.php?t=1330314
Which folder(s) are you looking for?
Thanks. I'll update it!
Click to expand...
Click to collapse
zanky said:
The link you sent me only has a generic world for lt18i. This other thread i read though said that there is no such thing as generic world, and its just called that but its always for some region of the other. (http://forum.xda-developers.com/showthread.php?t=1210776&page=3)
Not sure how accurate that is but i dont see the nordic one on the link you sent me anyway
Also another thread said that there will always be 8-9 bloatware apps on any firmware such as canal+, warner vod, etc. is this true or false?
Lastly, say i find an older version of the nordic flash file, can i just flash that instead of the 0.62 and then just get an ota update? I didnt see france on your list of status of updates, any idea where that is?
As for pictures, not sure what folder but i believe there were some stock pics that came with the phone to show off the home screen photo widget. If you dont know what im talking about dont worry about it.
Click to expand...
Click to collapse
Hi! I was on the same situation as you when I got my device as this was my 1st ever android device and I was also curious about firmware regions. So I tested each and every firmware region I could get on .42 and all I can say is there's not much difference on all of them.
1. is of all the regions there each firmware differs only by so called bloatwares.
2. there are only 2 major differences of all the regions. Asia region contains Chinese keyboard, Japanese Keyboard & international keyboard but no arabic support. While non-Asia regions only has International Keyboard included + arabic support.
That's pretty much about it. All others softwares are similar like baseband version, branding, kernel version, applications, themes, etc.

[Q] Which is the G900M unbranded stock firmware?

Does anyone know which is the unbranded stock firmware for the G900M?
arturox said:
Does anyone know which is the unbranded stock firmware for the G900M?
Click to expand...
Click to collapse
There is new firmware on sam mobile. G900MUBU1ANE2_G900MUUB1ANE4_ALE
That's the newest unbranded. I tested by flashing this last night, it appears to be identical to the shipping firmware on my factory unlocked G900M. There is no non-Samsung bloat and language selection seems identical..
LOL I was in between flashes anyway. Wanted to see if there was another OTA to 4.4.3 as some carriers have released it, but there is not yet.
It's the first version of the unbranded firmware I've been able to find actually..all the others seem to be branded to a carrier of some form.
Thanks for that, I will download that ROM

Lollipop update .270 Rooted with Recovery c6903

270 rooted with recovery https://mega.co.nz/#!1pR3VQwC!C-3X-Y...B8pfpy_aDLjwo0
New link: https://drive.google.com/file/d/0B_mcadp7d-IvV3l1Z1c1WlFkRnc/view?usp=sharing
Proof: https://youtu.be/wiuHFXTk3xY
its asking for a decryption key
iain26 said:
its asking for a decryption key
Click to expand...
Click to collapse
i did not know . i will update the link
NexusGTS said:
270 rooted with recovery https://mega.co.nz/#!1pR3VQwC!C-3X-Y...B8pfpy_aDLjwo0
New link: https://drive.google.com/file/d/0B_mcadp7d-IvV3l1Z1c1WlFkRnc/view?usp=sharing
Proof: https://youtu.be/wiuHFXTk3xY
Click to expand...
Click to collapse
Is this a flashable zip?
nalab1 said:
Is this a flashable zip?
Click to expand...
Click to collapse
You shouldn't really install this anyway.
I've said this in another thread, but if you flash the wrong firmware you can effect your baseband and each ROM also has different settings depending on your region. Like some might use "LTE" and some might use "4G". There's also other changes such as if fast dormancy is enabled or disabled, so you really should wait and install the correct ROM for your device.
I'm waiting for the generic UK version to be updated. It's odd though that T-Mobile's was released before it since the generic version doesn't have to go through the same network checks and customization.
Not true - In the UK all networks have to authorise or approve the update before it can be released to Generic devices
Omanujaku said:
Not true - In the UK all networks have to authorise or approve the update before it can be released to Generic devices
Click to expand...
Click to collapse
The generic update doesn't need anything from the network providers as it's downloaded from Sony servers. It just has to pass certification.
None of the UK network providers put out the generic update over their network. There's nothing to customize and it doesn't depend on them. Think about it. If Sony had to wait for all of them to approve the update then it wouldn't be released for months because they would all hold off giving it the go ahead until their network specific versions were ready.
Most of the time the updates are released in whatever order Sony feels like giving them out in. Before it was the generic version, O2 and Vodafone with the rest to follow and now it's as if it's gone in the opposite order.
Here is flashable .zip Official Prerooted C6903 Central Europe Customized CE3 14.5.A.0.270 R1D.zip with NUT dualrecovery included.
https://drive.google.com/file/d/0B30...ew?usp=sharing
ImADev said:
The generic update doesn't need anything from the network providers as it's downloaded from Sony servers. It just has to pass certification.
None of the UK network providers put out the generic update over their network. There's nothing to customize and it doesn't depend on them. Think about it. If Sony had to wait for all of them to approve the update then it wouldn't be released for months because they would all hold off giving it the go ahead until their network specific versions were ready.
Most of the time the updates are released in whatever order Sony feels like giving them out in. Before it was the generic version, O2 and Vodafone with the rest to follow and now it's as if it's gone in the opposite order.
Click to expand...
Click to collapse
I have knowledge of the UK market and how it works - Networks have to approve the update before Generic handsets receive the update - I'm not saying the networks have to release the update but they do have to approve the update
This is From Italy And is GLOBAL-LTE , it would work on any unlocked c9603.
Dadovvv said:
Here is flashable .zip Official Prerooted C6903 Central Europe Customized CE3 14.5.A.0.270 R1D.zip with NUT dualrecovery included.
https://drive.google.com/file/d/0B30...ew?usp=sharing
Click to expand...
Click to collapse
what's diference between central europe ce1, ce2,ce3,ce4?
jcgechevarria said:
what's diference between central europe ce1, ce2,ce3,ce4?
Click to expand...
Click to collapse
NFC, LTE icons and option to convert diacritic marks into normal characters (when you use diacritic marks SMS can contain only 70 characters; this option will convert for example word żółw into zolw so you have 160 character SMS back).
I'm preparing pre-rooted CE1 with NUT DualRecovery 2.8.15 right now.
EDIT: After short tests everything seems to be working download here https://mega.co.nz/#!k5YAyA7a!Pcpo5RuWau-gdAM3y-YcZ0ZxzLdaH88czwQLiiIyD3Y
NexusGTS said:
This is From Italy And is GLOBAL-LTE , it would work on any unlocked c9603.
Click to expand...
Click to collapse
The UK uses EURO-LTE, which uses a different baseband file. Here in the UK it's called 4G and not LTE, so although it might appear to work it's still going to give you the wrong network icons and options. That can result in people complaining about poor battery life and other such issues.
Omanujaku said:
I have knowledge of the UK market and how it works - Networks have to approve the update before Generic handsets receive the update - I'm not saying the networks have to release the update but they do have to approve the update
Click to expand...
Click to collapse
As do I, which is why I think you're confusing certification with approved provider specific firmwares.
Network providers only have to approve of their own custom firmwares. They'll check the settings, branding and include any bundled apps. They don't have to do that with the generic firmware though because it's not designed for their version of the device. So the generic firmware is certificed (safe and works on the networks) and then that's enough for it as Sony distributes that update. The network providers already know what's included in the update because it's exactly the same as their own version but without all of the branding and crap.
Hello.
I'm in Italy and I have a Xperia Z1 6903, with KK, rooted with newroot and CWM Recovery v.6.0.4.7 (installed by newroot) and with some modules Xposed; Locked bootloader.
Can I use your prerooted ROM?
Your ROM works well in Italy?
After installation, I still find my recovery or installing a new recovery from your zip file?
Any advice or suggestions
Thank you.
Giozer said:
Can I use your prerooted ROM?
Click to expand...
Click to collapse
Yes
Giozer said:
Your ROM works well in Italy?
Click to expand...
Click to collapse
Yes, I've installed yesterday
Giozer said:
After installation, I still find my recovery or installing a new recovery from your zip file?
Click to expand...
Click to collapse
Grim new dual recovery
Can I use youe ROM with Locked Bootloade?
Thank you.
Does it work on locked bootloader?
Just flash like normal with xperia flash tools?not need unlock bootloader?
I used the op last release when the lp firmware originally came out with a xperia z1 but from Rogers in Canada with a locked bootloader. No issues. Using his build now but I'm waiting to update to this as people seem to be having random issues. Nothing to do with OP.
Hello. I have a Xperia Z1 with KK and root. After doing wipe data and cache wipe, I installed the ROM from recovery. The ROM I had copied from the PC to microSD (SD card1 that). But the procedure only lasts 2-3 sec. At the restart I am still with KitKat, only with a factory reset. What is wrong?
Any chance of you building the [.270 ] version for the 6906?
I am from Canada and can't find it anywhere... On Rogers with locked bootloader. Any help is appriciated.
Cheers

Phone not updated since March security patch

My F5321 from Malaysia isn't receiving any of the new updates. Last one was 34.4.A.2.32.
Could anyone explain why?
You can check xpericheck.com if there's a newer version,but there's a good chance there isn't one. I'm stuck on 34.4.A.2.50 on the Central Europe version for example, the newest one is .85
Matej101 said:
You can check xpericheck.com if there's a newer version,but there's a good chance there isn't one. I'm stuck on 34.4.A.2.50 on the Central Europe version for example, the newest one is .85
Click to expand...
Click to collapse
Customised MY isn't even listed. :/
What now? Unlocking bootloader if you want latest security patches?
Is there another firmware variant that would be suitable for your location? There may be less difference between the variants than you might expect.
pseudonym58 said:
Is there another firmware variant that would be suitable for your location? There may be less difference between the variants than you might expect.
Click to expand...
Click to collapse
Can you just flash the firmware straight from xperifirm, or do you need an unlocked bootloader or sth?
Bro do not update it to 8.0 oreo is wery bad I swear im back to stock Nougat again
Qendra said:
Bro do not update it to 8.0 oreo is wery bad I swear im back to stock Nougat again
Click to expand...
Click to collapse
true
Matej101 said:
You can check xpericheck.com if there's a newer version,but there's a good chance there isn't one. I'm stuck on 34.4.A.2.50 on the Central Europe version for example, the newest one is .85
Click to expand...
Click to collapse
me too.. central europe and stuck on 34.4.A.2.50, I don't understand why
andy356 said:
My F5321 from Malaysia isn't receiving any of the new updates. Last one was 34.4.A.2.32.
Could anyone explain why?
Click to expand...
Click to collapse
According to xpericheck, singapore region firmware is also stuck in March. I guess both MY and SG are using the sme FW. I think you cn flsh other region FW without unlocking Bootloader.
Is there a way to flash security updates only, without upgrading to oreo?
trewelu said:
According to xpericheck, singapore region firmware is also stuck in March. I guess both MY and SG are using the sme FW. I think you cn flsh other region FW without unlocking Bootloader.
Click to expand...
Click to collapse
Can anyone please confirm this? I'll unlock the bootloader if I have to, but it would be great if it is not needed.
andy356 said:
Can anyone please confirm this? I'll unlock the bootloader if I have to, but it would be great if it is not needed.
Click to expand...
Click to collapse
I'm in USA, and I've flashed f'd from at least 10 different countries and never seen any affect on the phone operation.
andy356 said:
Can anyone please confirm this? I'll unlock the bootloader if I have to, but it would be great if it is not needed.
Click to expand...
Click to collapse
If you want to retain the fingerprint sensor operation, don't flash to US. People here have in the past recommended either DE or UK, as they tend to be updated promptly. No unlocking of bootloader needed.
Okay guys. I'm ready to flash a new firmware, probably Customised UK. Is the guide on xperiablog up to date and accurate? Also, there is a flashtool by Androxyde on flashtool dot net, but there is also a flashtool on Sony Developer World. Which one should I use?
There is only one xperifirm so that's unambiguous, at least.
Edit: also, it doesn't affect user data or the OS in general, does it?
I can only speak from personal experience with the Androxyde flashtool. I've never tried (nor even known about) the Sony flash tool. In my experience, if you don't make any changes to the default settings, the existing user data is carried over into the newly installed firmware. I'm assuming here that you're flashing from one variant of Android 8.0 to another, not from Android 7 to 8, etc.
BTW, I would always advise backing up your data first, of course. If, for some reason, you are dissatisfied with the result, you can normally get a factory installation of your currently-installed firmware by using software restore from SONY (as part of Xperia Companion).
@pseudonym58 Thanks. Is the guide on Xperia blog the one to follow or is there a better one out there?
I don't recall which guide I used. It basically runs like this:
Run Xperiafirm from within flashtool; it will refresh available software. Choose particular phone model and download desired firmware. Back in flashtool proper, connect phone in flash mode. Select downloaded firmware, which is unpacked and prepared for flashing. As I mentioned above, you should not need to make any configuration changes to the default. Flashing can now begin (it might seem to pause temporarily from time to time but don't cancel process).
Don't worry about warnings of missing elements; I have never had a flashing procedure fail as a result of a claimed missing component.
This is just a general procedure; perhaps someone else can recommend the best full tutorial.
Ok so CE1 got the newest (.107) update right now so it can probably be used too.

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