Hello XDA Community
I seek a small bit of help if you could please help
I have a Sony Xperia Z Ultra o2
Model number C6833
Build number 14.1.B.1.510
I read here and noticed other user have managed to flash there devices to stock unbranded aka no bloatware which my phone is full of sadly
can anyone confirm if this will work as in if i were to flash this will this be the unbranded rom file i am looking for?
http://forum.xda-developers.com/showthread.php?t=2446525
I am very confused as i am used to Google Nexus and Samsung Galaxy devices...Sony is like new territory for me lol
guess what i am after is flashing my phone with the international unbranded rom if thats available anywhere and how do i flash it with which program etc etc
i know samsung devices used to use odin and stuff like that but thats a different ball game i guess
look forward to receiving your help
i've spend the last couple of hours trying to unlock the bootloader, root using vroot and i cant get anything working
i used vroot and got to the step of installing super su but it wouldn't update the binaries and even after reboot still wouldn't...i tried countless of times using this chinese tool but its useless unless theres a youtube video to follow
please can someone help me out i really wanna get my phone rooted and flash it with unbranded carrier free international rom
i dont think flashing unbranded firmware needs root. correct me if i wrong.
Grab the tool here
HTML:
http://forum.xda-developers.com/showthread.php?t=2428319
and the firmware here
HTML:
https://docs.google.com/file/d/0Bzddg8fRvBuQekFJTG9LOF8xbVE
just follow the instructions on the first link. i dont think u will encounter any problem. i tried the firmware on my c6802 with no problem.
NeOCzx said:
i dont think flashing unbranded firmware needs root. correct me if i wrong.
Grab the tool here
HTML:
http://forum.xda-developers.com/showthread.php?t=2428319
and the firmware here
HTML:
https://docs.google.com/file/d/0Bzddg8fRvBuQekFJTG9LOF8xbVE
just follow the instructions on the first link. i dont think u will encounter any problem. i tried the firmware on my c6802 with no problem.
Click to expand...
Click to collapse
Sorry mate did you say you flashed the 4g lte 6833 software on to the 6802 device
Does anyone know if it is possible to downgrade the firmware on a sony Z2? my phone was replaced at the sony centre and i have been given one with a newer firmware to the one supported by root (non bootloader unlock).
If it is possible, how do i do so?
A|ex said:
Does anyone know if it is possible to downgrade the firmware on a sony Z2? my phone was replaced at the sony centre and i have been given one with a newer firmware to the one supported by root (non bootloader unlock).
If it is possible, how do i do so?
Click to expand...
Click to collapse
Yes. Just download the appropriate firmware (make sure the model number e.g. D6503 is the same as your phone) and use Flashtool. Search the forums on how to use Flashtool to flash firmwares (plenty of guides).
Thanks for the reply, i was trying to look for the sticky with this information in rather than jumping around looking firstly trying to find a location for the flashtool and second the firmware repo to download from.
I did a search but there is all sorts on here
I've been using the pac-man ROM for over a year now, but it's a very old version, buggy and outdated. I wanted to try Kit Kat or basically just find a stable ROM, but pretty much ALL of the ROMS i've tried end up unable to find any mobile network or display the SIM card as invalid. Even when I search for networks or try to add a network manually, it still doesn't stick. Occassionally it'll even find the my local network when I go in settings and do a network search, my network being that of China Unicom, but it always results in failure to subscribe, please try again later. This has happened on a good 7 out of 8 ROMS i've flashed. The ONLY ROM i've ever been able to find a network on and thus make it usable has been the old 2013 pac-man 3.99 build. I've searched the forum and google for answers, such as flashing a particular modem or whatnot, but haven't found any solutions.
Does anyone have any ideas? It'd be greatly appreciated. I really need an updated ROM! :fingers-crossed:
If it matters:
Network: China Unicom
I've tried: 4.4.4 CM11, Stone UI hD3, Carbon KK Unofficial 2014-12, CM10.2 nightly, CM 11 M9, KitKat CarbonCN, PC Honami KK RC3, and Xperia Z Z1-1.4.
Only working ROM so far: pa_togari-3.99-RC2-20131104
To use the more modern ROMs you will have to be on a 4.4.4 FTF or you will get baseband issues ie SIM cant connect to network etc
blueether said:
To use the more modern ROMs you will have to be on a 4.4.4 FTF or you will get baseband issues ie SIM cant connect to network etc
Click to expand...
Click to collapse
It's been over a year since I unlocked and flashed my phone, and I haven't done any flashing since, so I kind of forget some of the procedures and technical aspects.
I'm going over the FAQ now, and one thing it says is "Never Flash a FTF to a ZU GPe." What is a GPe, and how can we make sure we are not using it?
It also mentioned I should use Sony PC Companion to update to the newest firmware. This means it will update to 4.4.4 FTF right, or do I need to find this and flash it manually? Likewise, after I'm on 4.4.4, I assume my phone will be reverted back to stock. Would I have to root it and unlock the bootloader again?
I remember when doing all this for my phone the first time, since my phone was a Chinese model, 6833 I believe, I went through hell and back for several weeks until it flashed and took the current ROM properly. Something about buggy firmware in that paritcular model, although it's been so long I forgot all the details. I'm worried that I'll run into a similar situation with 4.4.4... Thanks for any help, truly appreciated.
Spixe1 said:
It's been over a year since I unlocked and flashed my phone, and I haven't done any flashing since, so I kind of forget some of the procedures and technical aspects.
I'm going over the FAQ now, and one thing it says is "Never Flash a FTF to a ZU GPe." What is a GPe, and how can we make sure we are not using it?
It also mentioned I should use Sony PC Companion to update to the newest firmware. This means it will update to 4.4.4 FTF right, or do I need to find this and flash it manually? Likewise, after I'm on 4.4.4, I assume my phone will be reverted back to stock. Would I have to root it and unlock the bootloader again?
I remember when doing all this for my phone the first time, since my phone was a Chinese model, 6833 I believe, I went through hell and back for several weeks until it flashed and took the current ROM properly. Something about buggy firmware in that paritcular model, although it's been so long I forgot all the details. I'm worried that I'll run into a similar situation with 4.4.4... Thanks for any help, truly appreciated.
Click to expand...
Click to collapse
I tried to update to KK via Sony Pc Companion, but it says my phone is up to date. I assume it says that because it's not seeing any official firmware, due to the flashed ROM. Even when choosing the option to "repair my phone" which says it will re-install the latest available firmware, it states that there is no software available for my device. If memory serves me correct, I must first flash back to my oldest stock firmware that came with my phone, then I can use PC companion to update to KK, and then maybe unlock bootloader and root again, and then I'll be able to flash new ROMs and have a working mobile network, does that sound right?
Out of curiosity, since it's 4.4.4 ROMs that don't seem to work (network wise), doesn't that mean 4.3 ROMs should find a network just fine?
Spixe1 said:
I tried to update to KK via Sony Pc Companion, but it says my phone is up to date. I assume it says that because it's not seeing any official firmware, due to the flashed ROM. Even when choosing the option to "repair my phone" which says it will re-install the latest available firmware, it states that there is no software available for my device. If memory serves me correct, I must first flash back to my oldest stock firmware that came with my phone, then I can use PC companion to update to KK, and then maybe unlock bootloader and root again, and then I'll be able to flash new ROMs and have a working mobile network, does that sound right?
Out of curiosity, since it's 4.4.4 ROMs that don't seem to work (network wise), doesn't that mean 4.3 ROMs should find a network just fine?
Click to expand...
Click to collapse
I cant remember where/when the baseband changed, it has been updated several times. I would just go straight to 4.4.4 and not worry about PC Companion - Just use the latest flashtool (http://flashtool.net).
Grab a 4.4.4 (aka x.x.x.108 or .118) FTF from the FTF thread in the dev section and flash that. That will wipe all user data (so back it up) and install a new /system image. You will have to root the device again abut 4.4.4 is easy to root now with the easyroot tool. Then you should be on the latest baseband and all the new ROMs should work - 4.4.4 and 5.0.x
Thanks blueether, I'll give that a go and report back (hope you don't mind). Here's hoping (since i know the 6833 chinese model is finicky)...
Spixe1 said:
Thanks blueether, I'll give that a go and report back (hope you don't mind). Here's hoping (since i know the 6833 chinese model is finicky)...
Click to expand...
Click to collapse
You mentioned I should get a *.108 or 118 in order to get the ROMs working again (mobile network wise).
I found in the FTF repository: STOCK ROM] [FTF] Xperia Z Ultra 6833 14.4.A.0.118 "VodaFone UK" and also "SRF FR".
I'm using a 6833 in China, however. My guess is these wouldn't work because they require different networks.
Doesn't matter? Or perhaps, I just flash any 118, and that will give me the newest firmware. Then I can flash other ROMs (that use the same firmware), which will have updated modems, and consequently get my network signal back. Is this how it works? Want to be 100% sure before I go flashing with firmware that would make my phone unusable. Thanks for any advice!
Spixe1 said:
You mentioned I should get a *.108 or 118 in order to get the ROMs working again (mobile network wise).
I found in the FTF repository: STOCK ROM] [FTF] Xperia Z Ultra 6833 14.4.A.0.118 "VodaFone UK" and also "SRF FR".
I'm using a 6833 in China, however. My guess is these wouldn't work because they require different networks.
Doesn't matter? Or perhaps, I just flash any 118, and that will give me the newest firmware. Then I can flash other ROMs (that use the same firmware), which will have updated modems, and consequently get my network signal back. Is this how it works? Want to be 100% sure before I go flashing with firmware that would make my phone unusable. Thanks for any advice!
Click to expand...
Click to collapse
any 108 or 118 for the c6833 should work just fine
hello i am seeing everyone here got their m4 aqua upgraded to android 6.0, although when i go to software update on my
m4, it says it already has the most recent update. and i only have android lollipop 5.0.
Is there a way to upgrade it to 6.0 without voiding my warranty?
flash with flashtool
Siea Group said:
flash with flashtool
Click to expand...
Click to collapse
can you give me a tutorial or something? i'm not sure how to do this.
also won't this void my warranty?
Hello,
The official update is only available through Xperia Companion.
Alternatively, you can update the unofficial way by flashing through flashtool.
So just to make things clear: a computer is required to update your phone.
Concerning the warranty: you won't void it unless you unlock your bootloader (and flashing an official firmware, even from an unofficial tool like flashtool does not require to unlock it).
I would advise you to go the official way (update with Xperia Companion).
Regards
WormsWarII said:
Hello,
The official update is only available through Xperia Companion.
Alternatively, you can update the unofficial way by flashing through flashtool.
So just to make things clear: a computer is required to update your phone.
Concerning the warranty: you won't void it unless you unlock your bootloader (and flashing an official firmware, even from an unofficial tool like flashtool does not require to unlock it).
I would advise you to go the official way (update with Xperia Companion).
Regards
Click to expand...
Click to collapse
the problem is that it says i already have the most recent android system on sony app.
also i don't know how to upgrade this
go to xpericheck.com and search your device. the latest is 26.3.A.1.33, if your device listed there with the latest software i think you should flash it using flashtool. and if you wish to upgrade using official method, try to factory reset your phone and try again using xperia companion.
Extra! look at Diagnostics. if there any information about Software Update available, you can use your xperia companion. and sorry for my bad english. good luck
Hi all,
I wanted to flash a newer android 13 stock firmware because my Sony from a UK operator doesn't get the OTA update.
I have the firmware from XperiFirm and made the ftf with flashtool. Just before I was about to get if flashed I was reading comment saying this tool is not good anymore, but I am not 100% sure how to use the Newflasher instead.
Could someone help me on that?
I don't really want to brick my phone and if it's not a safe way to get android 13 I might just don't do it.
Cheers.