Database Develop

how do i get back to 2.1 from 2.3 ?

I recently updated my phone to 2.3.7, and now i want 4.04
But for that, 2.1.1.A.0.6/2.1.1.C.0.0 SE firmware is required.
And after upgrating to 2.3.7, firmware is changed, and i've lost my previous backup, so i cant restore it.
Now how to i get my previous firmware ?
Please help

you don't need to change the firmware or move to stock version, you can upgrade to ICS if you have unlocked bootloader

Use Sony PC Companion or Sony Update Service.
If you have never update your phone to 2.1.1.A.0.6 or 2.1.1.C.0.0 it's required to do that before flashing cm9.

http://forum.xda-developers.com/showthread.php?t=1650174

Straight Answer
Simply get flashtool. Then the stock 2.1 firmware. Open flashtool. Then drag the firmware from desktop onto flashtool in the white space. A menu will pop up. Click ok. It will ask you to plug you x8 in flashmode. (instructions for this will pop up. When you do this the instructions will dissapear. Then it will flash the stock sony 2.1 and then reboot.
flashtool: Here
firmware: Here
Please click 'thank' if you appreciate my effort. Sorry if this wasn't what you were looking for. For a simple fix just use pc companion as said before. But it takes longer.

[Q] hi couple of questions regarding my xperia z..

1) I rooted my phone successfully and then I tried to install the doomlord kernal...1st it dint work properly however after couple of tries...It worked sucessfully
2) My Xperia version was c6602 and it had original stock rom and everything...
3) Recently now I've installed the cyanogen mod 10.1.2 and it worked...however my android firmware version is still 4.2.2 but the phone model is changed from c6602 to 6603...Really wierd...!!!
4) please tell me how to get back to stock rom as i havent got any backup...
5) When i had installed the XZrecovery ( TWRP ) recovery...!!! i had the back up installed on my phone and now i cant install that idk what to do..!!
please help me...!!!
Any advice/guide/help will be really appreciated..!!!!

At unlocking BL you modified your TA partition, so Bravia Engine 2 doesn't work anymore.
If you want to revert back to stock you need:
Flashtool(FT)
A .ftf File(FlashToolFile, this contains the whole System of the phone)
Some time(it will take up to an hour for everything set up correctly)
A Windoze Box
So you need to get your device in Flashmode, then flash the stock ftf with FT, and finally relock bootloader.
If you need more info, just ask
Sent from my Dualbooted XZ

[Q] Step By Step : How to [ Root + CWM + ROM ] Xperia Z1

First of all, I'd like to apologize to start this open question.
It looks like everyone is getting their phone working without any much extra tutorial required along with the XDA forum guides and ROM.
I used to be a Samsung Galaxy S2 user from months ago.It took me 5 days to have my S2 Rooted and another 5days to have a stable ROM, as I was a noob back there and still a noob till now at the time I am writing or as you are reading this post.
Frankly, I'm actually lost here. I tried to visit all the links within the first 3 pages to find out how to get my phone rooted with CWM ready and getting a stable ROM on my phone without having to hassle back and forth.
Please forgive me for my noobie. I'd like to write this post and ask for your instruction and suggestion in step by step.
How to have my Xperia Z1 CWM ready and rooted with a stable ROM preferably KitKat.
In advance and regards to your times, I'd like to hand a big thump up :good: for any share and help bestow of your comment.
Cheers, :fingers-crossed:

everydayedin said:
First of all, I'd like to apologize to start this open question.
It looks like everyone is getting their phone working without any much extra tutorial required along with the XDA forum guides and ROM.
I used to be a Samsung Galaxy S2 user from months ago.It took me 5 days to have my S2 Rooted and another 5days to have a stable ROM, as I was a noob back there and still a noob till now at the time I am writing or as you are reading this post.
Frankly, I'm actually lost here. I tried to visit all the links within the first 3 pages to find out how to get my phone rooted with CWM ready and getting a stable ROM on my phone without having to hassle back and forth.
Please forgive me for my noobie. I'd like to write this post and ask for your instruction and suggestion in step by step.
How to have my Xperia Z1 CWM ready and rooted with a stable ROM preferably KitKat.
In advance and regards to your times, I'd like to hand a big thump up :good: for any share and help bestow of your comment.
Cheers, :fingers-crossed:
Click to expand...
Click to collapse
If you want to keep your warranty , the best way would be the following:
1) Use this guide to get root and recovery on stock .290 firmware : http://youtu.be/1aq9YTlfCgc
2) Once you have root, you will be able to back up your TA partition (DRM keys)
-if you don't know any terms or are confused look here: http://youtu.be/l78p_2ShPS0
3) Now that you have your TA backup safe you can go to official Sony website to unlock your bootloader: http://unlockbootloader.sonymobile.com/
4) Choose a custom rom that you want, flash kernel and rom: http://forum.xda-developers.com/xperia-z1/orig-development
If you ever want to get back to stock. Use Flashtool to flash stock firmware, restore TA, relock bootloader.
Never attempt to restore TA on custom ROM - this will brick your device
If you don't care about warranty and don't mind loosing Bravia Engine, X-reality, Bionz etc forever; do the following:
1) unlock bootloader
2)Choose a custom rom that you want, flash kernel and rom: http://forum.xda-developers.com/xperia-z1/orig-development

1) Download the .ftf file named C6903 14.1.G.1.534 Global 1277-2880_R4A from the compiled FTF thread at this link: http://forum.xda-developers.com/showthread.php?t=2469191
This is a version of the original Stock Rom that the VROOT program will actually work on when trying to ROOT your phone.
2) Flash the ROM you downloaded using Flashtool (steps on how you can go about doing that should be in the Xperia Z1 General forum.) and now, you're ready to root your phone with it.
3) Download, install and run VROOT to root your phone. Again, more information on how to properly root your phone using VROOT can be found in the Xperia Z1 General forum. For me, I just turned on USB Debugging on my Z1, connected my phone to my computer while VROOT was running and clicked the green button until I got root access. It's extremely easy.
4) With Root Access, now you can download and install Dual Recovery for the Xperia Z1 on your phone.
5) Download the latest iHackers 2.0 ROM from the Xperia Z1 Android Development thread and copy it to your phone. This is hands down, the best ROM for the Xperia Z1 right now in terms of battery life. With the latest 4.3 update, I'm able to get over 2 Days worth of battery life on one charge. Battery life is much better on the new iHackers 2.0 ROM running Android 4.3.
6) Download the flashable Locked Dual Recovery for the Xperia Z1 here. http://nut.xperia-files.com/
The file is called XZ-lockeddualrecovery2.7.63-BETA.flashable.zip (8.48MB), download it and copy it to your phone, preferably the same place you copied the iHackers 2.0 ROM. To make things easier for yourself, create a new folder on your phone or SD Card in your phone and name it iHackers. Copy both the iHackers 2.0 ROM and the flashable Locked Dual Recovery.zip file into this folder.
7) With both files now copied to a folder on your phone, you're now ready to go into recovery to flash the iHackers 2.0 ROM. Boot into recovery and once you're there, do a Wipe Data/Factory Reset before Installing the ROM.
The rest of these steps are now taken directly from the iHackers 2.0 download thread on the Xperia Z1 Android Development forum.
8) Install the ROM and THEN Dual Recovery. Don't make the same mistake I did, once the installer is finished, DON'T REBOOT THE DEVICE. Uncheck the "Reboot Device" box and go back to recovery to install the flashable Dual Recovery.zip file that's in the iHackers 2.0 folder.
9) Switch Off Your Phone (Do Not Reboot). Select No to Disable Flash Recovery Confirmation.
10) Install Kernel.ftf for C6903 (.290) or Kernel.ftf for C6902 (.290) with Flashtool to get compatible Kernel and Baseband. To download the kernel.ftf file, go to the original iHackers 2.0 thread to download and flash the kernel using Flashtool. You should be familiar with Flashtool at this point since if you make it to this step, you've already used Flashtool once to flash the .534 baseband version of Android.
11) Reboot and Enjoy. Now you're running the latest version of Android 4.3 on your Xperia Z1 on a Locked Bootloader WITH full Root Access. Sure, it's not the stock version but the iHackers 2.0 version of Android 4.3 is just as good, if not better. This will certainly do until there's a better way to simply root the newest Stock Version of Android 4.3.
Step by Step Guide made by @x016x so Thanks him, and Me, because I posted here.

You can flash the latest z1 dual recovery, not only 2.7.63.
Sent from my C6903 using XDA Premium 4 mobile app

Stuck on Boot Loop
I tried with shem tutorial but stuck at boot loop.
Big thanks to eclyptos for your precise and detail oriented instruction

everydayedin said:
I tried with shem tutorial but stuck at boot loop.
Click to expand...
Click to collapse
So you are in bootloop? Something goes wrong there then. I don't know what is the main problem.
Now to go back to the beginning you have to flash Stock FTF with Flashtool.

I bricked my Xperia Z - Please help

I was using PAC ROM on my Xperia Z since after few weeks after buying the phone, but i find PAC rom kinda slow, so I wanted to go back to stock kernel,rom. So I decidede to relock bootloader(I already did it once and went back to PAC). But this time, after relock my phone is dead, all I can do is get it into flashmode and fastboot. I am not able to flash stock firmware. I need help, please guys. I can post logs, screenshot, whatever you need.

if the phone is able to get into flashmode and fastboot it is not bricked at all you should be able to reflash stock rom without any issue I suggest using flashtool and google how to flash to stock rom xperia z

Thank you for your fast reply. I am gonna keep trying from other PCs, with fresh install of flashtool and drivers. Does the version of stock firmware make any difference?

I have managed to unbrick it by flashing stock firmware as you said. I am very happy but I would still like to get my device rooted, But something based on stock kernel not some crazy stuff. Could you tell me how? Dont wanna mess up things again

Stuck on 'com.android.phone has stopped' after flashing

I have the Japanese Xperia Z4 - 402SO (Softbank). I wanted to debrand the phone, so I flashed with a generic USA Z3+ E6553 Marshmallow firmware. I used Flashtool and Xperifirm. The process went well, everything works, but I lost NFC, so I decided to flash back the stock firmware. After flashing the 402SO firmware, the phone boots up and a constant popup saying 'com.adroid.phone has stopped'. I can't even get to the home screen. I tried to repair using Xperia Companion, but I get an Error and fail to Restore. I can flash back to the E6553 firmware and I can use the phone again... but I would really like to revert to stock.
Any ideas on how to flash back to stock Japanese firmware? I would like to revert to stock in order to get the NFC working again.

spoonmasta said:
I have the Japanese Xperia Z4 - 402SO (Softbank). I wanted to debrand the phone, so I flashed with a generic USA Z3+ E6553 Marshmallow firmware. I used Flashtool and Xperifirm. The process went well, everything works, but I lost NFC, so I decided to flash back the stock firmware. After flashing the 402SO firmware, the phone boots up and a constant popup saying 'com.adroid.phone has stopped'. I can't even get to the home screen. I tried to repair using Xperia Companion, but I get an Error and fail to Restore. I can flash back to the E6553 firmware and I can use the phone again... but I would really like to revert to stock.
Any ideas on how to flash back to stock Japanese firmware? I would like to revert to stock in order to get the NFC working again.
Click to expand...
Click to collapse
Just try this: Reflash the Stock ROM and also tick the Cache & Data clear. First time, I also faced the same issue, after reflashing with cache & data clear, I got success.

[email protected] said:
Just try this: Reflash the Stock ROM and also tick the Cache & Data clear. First time, I also faced the same issue, after reflashing with cache & data clear, I got success.
Click to expand...
Click to collapse
I usually tick all the boxes under the Wipe section, to do a clean install. When you say Cache, do you mean to exclude the cache? the only area I see cache is under the Exclude section. I'm using Flashtool version 0.9.22.3

spoonmasta said:
I usually tick all the boxes under the Wipe section, to do a clean install. When you say Cache, do you mean to exclude the cache? the only area I see cache is under the Exclude section. I'm using Flashtool version 0.9.22.3
Click to expand...
Click to collapse
Not exclude, I mean check all wipe section. If you already tried with all wipe options checked, then no other suggestion from me.

spoonmasta said:
I have the Japanese Xperia Z4 - 402SO (Softbank). I wanted to debrand the phone, so I flashed with a generic USA Z3+ E6553 Marshmallow firmware. I used Flashtool and Xperifirm. The process went well, everything works, but I lost NFC, so I decided to flash back the stock firmware. After flashing the 402SO firmware, the phone boots up and a constant popup saying 'com.adroid.phone has stopped'. I can't even get to the home screen. I tried to repair using Xperia Companion, but I get an Error and fail to Restore. I can flash back to the E6553 firmware and I can use the phone again... but I would really like to revert to stock.
Any ideas on how to flash back to stock Japanese firmware? I would like to revert to stock in order to get the NFC working again.
Click to expand...
Click to collapse
Please, can you learn me Step by Step to flash sony z4 softbank to international rom nougat? Thanks
---------- Post added at 03:35 PM ---------- Previous post was at 03:32 PM ----------
spoonmasta said:
I have the Japanese Xperia Z4 - 402SO (Softbank). I wanted to debrand the phone, so I flashed with a generic USA Z3+ E6553 Marshmallow firmware. I used Flashtool and Xperifirm. The process went well, everything works, but I lost NFC, so I decided to flash back the stock firmware. After flashing the 402SO firmware, the phone boots up and a constant popup saying 'com.adroid.phone has stopped'. I can't even get to the home screen. I tried to repair using Xperia Companion, but I get an Error and fail to Restore. I can flash back to the E6553 firmware and I can use the phone again... but I would really like to revert to stock.
Any ideas on how to flash back to stock Japanese firmware? I would like to revert to stock in order to get the NFC working again.
Click to expand...
Click to collapse
Please, can you learn me Step by Step to flash sony z4 softbank to international rom nougat? Thanks,