Develop Bugs

[Q] Please Help me for rooting my xperia arc LT 15I

Hello
I'm new here please can help me to root my Xperia ARC Lt 15i, i live in Algeria i can not buy anything on internet, i want free program to root my Phone . Thank you .
my best regards.

Wrong section dude.... Post it in Q & A.. And please search the forum.. evetything is there...
Use Superoneclick software to root ur Arc.
Search on google for Superoneclick software. It is freely available..
But if ur firmware is .62 then u cant root it as SOC software doesnt have support to root the .62 firmwares...
Hit thanks if I helped u..

thank you
[COLORor it now ="DarkRed"]thank you very much sir i will look f[/COLOR]

Hello,
I m sorry, I couldnt reply early as I was quite busy with some work.
1)Can u plz tell me what build u r having? Is it 4.0.0.A.0.42 or 0.62? To check it go to Settings->About Phone. there u'll find it.
3)Before going ahead with rooting, make sure u have latest drivers installed. Install the latest version of PC Companion.
2)If it is .0.42 then u can root it using the Superoneclick but if it is 0.62 then I'm afraid, u need to flash the cell with already rooted .62 firmware cos rooting 0.62 manually is not present at the moment.
3) The pre rooted .0.62 firmware is available on the forum just check u'll get it.
4)If u have 0.42 firmware, then to root it. Make sure u have USB Debugging selected. To select it, go to settings->Development->USB Debugging
5) Now open the Superoneclick software. And connect the cell to PC via USB
6)Dont make any changes to Superoneclick Software, just select method as Zergrush and click on root.
7)Wait for the process to complete, the SOC will send a su command to ur cell click on ok when a pop up comes.
8) Check the cell and check for Superuser app in ur app drawer.
Thats it!

rooting 4.0.0.A.0.62
I used wotan server to flash my firmware to 4.0.0.A.0.42 and then root it. Its a long process but worth it.

[GUIDE FOR NOOBS] How to update Xperia S to Android 4.0 ICS: STEP by STEP

I have seen this question posted a dozen times today across several threads, thus, I decided to write a step-by-step, fool proof, noob-oriented simple guide; if somebody asks again please point him/her to this thread to avoid spamming the main discussion / development threads
STEP BY STEP GUIDE:
How to update the Sony Xperia S
to Android 4.0 Ice Cream Sandwich​
NOTICE 1: This guide is for WINDOWS PC USERS, if you have a Mac I can't help you, but the process is very similar
NOTICE 2: It doesn't matter if your phone is rooted or not, bootloader unlocked or not, IT DOESN'T MATTER, this update has nothing to do with SIM unlock, bootloader lock / unlock, root, etc
NOTICE 3: This guide will update your Xperia S from ANY previous version to OFFICIAL SONY ICS ANDROID 4.0.4 and believe me: it is worth the update; HAT TIP TO SONY !!
NOTICE 4: The internal SD card contents will NOT be deleted but everything else inside your phone will be reseted to factory defaults because this is a major update, so do a backup if you want to keep call logs, SMS etc. I only backup my SMS and Whatsapp messages, google backed up everything else because I had the backup option activated in settings
NOTICE 5: Before asking, please read the questions and answers in the thread for many Frequently Asked Questions
Click to expand...
Click to collapse
STEP 1:
Download the Flashtool
You will find the installers here: http://androxyde.github.com/Flashtool/
Go to the "installation" tab, download Flashtool installer v0.9.10.1 and run it
You will have a new folder on your PC: c:\Flashtool
STEP 2:
Download the ICS firmware update
You will find several download options here: http://forum.xda-developers.com/showthread.php?t=1723610, just pick one and download it, then come back here
SOME NOTICES (I know you are gonna ask):
- I know it is "Generic Switzerland" (CH) but nevermind: it is plain Sony Generic and works fine for any region and has ALL the languages and keyboards
-The firmware is already prepared to be flashed via Flashtool in .FTF format. If the file you downloaded is .RAR then it is compressed ("zipped") and you need to EXTRACT the .FTF with WinRAR (if you don't have WinRAR download it from here: http://www.rarlab.com/download.htm)
STEP 3:
Let's update the phone!
- Copy the firmware FTF file to c:\Flashtool\Firmwares
- Go to c:\Flashtool\Drivers and run "Flashtool-drivers.exe" to install the proper drivers for Xperia S
- After installing the USB drivers reboot your PC
- Go to c:\Flashtool and run "FlashTool" (if you have Windows 64 bits, run "FlashTool64")
- Click the flash button (yes: the thunder icon up left)
- Select "Flahsmode" and click "OK"
- Select the "LT26 6.1.A.0.452" firmware and click "OK", DON'T TOUCH ANYTHING ELSE
- Flashtool will prepare the files for flashing, just be patient
- A Window will pop up asking you to connect the phone in "Flashmode" showing instructions for an old Xperia phone: ignore it, here is how the Xperia S enters "Flashmode":
- Turn off the phone
- Press and hold the VOLUME DOWN key
- Keep it pressed, connect the USB cable to your PC
- Release the Volume Down key when phone's GREEN LED lights up
- Flashtool will start flashing automatically, let it finish to 100%
- Disconnect the USB cable when Flashtool reaches 100% and indicates flashing has finished giving some extra info about activating debugging mode etc (don't care, that's optional)
- Turn on your phone (press and hold the Power button for some seconds)
- The first boot takes some minutes, don't worry let your phone prepare your Ice Cream Sandwich for you
- Have fun !! :highfive:
PS1: PLEASE REMEMBER TO SAY "THANKS" to Bin4ry (for the FTF firmware) and Androxyde (for the Flashtool)
PS2: And the usual disclaimer, of course: Follow the steps and be careful, I am not responsible if you brick your phone, burn your house or blow your PC by following this guide; I am just sharing what I did to update my own phone :angel: and it worked for me
Click to expand...
Click to collapse
.

can you upload full system dump from phone? cause i extract from system.sin but 70% files are corrupt and can not used

mercury_beta said:
can you upload full system dump from phone? cause i extract from system.sin but 70% files are corrupt and can not used
Click to expand...
Click to collapse
https://docs.google.com/file/d/0BzBG...VaU0loVXM/edit

gtrab said:
I have seen this question posted a dozen times today across several threads, thus, I decided to write a step-by-step fool-proof noob-oriented simple guide; if a noob asks again please point him/her to this thread
STEP BY STEP GUIDE:
How to update the Sony Xperia S to Android 4.0 Ice Cream Sandwich​
NOTICE 1: THIS IS FOR WINDOWS PC USERS, if you have a Mac I can't help you
NOTICE 2: It doesn't matter if your phone is rooted or not, bootloader unlocked or not, IT DOESN'T MATTER
STEP 1:
Download the Flashtool
You will fin the installers here: http://androxyde.github.com/Flashtool/
Go to the "installation" tab, download Flashtool installer v0.8.0.0 and run it
Then, download the v0.8.6.0 Update and run it
You will have a new folder on your PC: c:\flashtool\
STEP 2:
Download the ICS update firmware
You will find several download options here: http://forum.xda-developers.com/showthread.php?t=1723610, just pick one and download it and come back here
SOME NOTICES (I know you are gonna ask):
- I know it is "Generic Switzerland" (CH) but nevermind: it is plain Sony Generic and works fine for any region and has ALL the languages and keyboards
-The firmware is already prepared to be flashed via Flashtool in .FTF format. If the file you downloaded is .RAR then it is compressed ("zipped") and you need to EXTRACT the .FTF with WinRAR (if you don't have WinRAR download it from here: http://www.rarlab.com/download.htm)
STEP 3:
Let's update the phone!
- Copy the firmware FTF file to c:\Flashtool\Firmwares
- Go to c:\Flashtool\Drivers and run Flashtool-drivers.exe to install the proper drivers
- Run Flashtool
- Click the flash button (the thunder icon)
- Select "Flahsmode" and click "OK"
- Select the "LT26 6.1.A.0.452" firmware and click "OK". DON'T TOUCH ANYTHING ELSE
- Flashtool will prepare the files for flashing. Be patient.
- A Window will pop up asking you to connect the phone in Flashmode with an old Xperia phone and instructions: ignore it, here is how our shiny new Xperia S enters "Flashmode":
- Turn your phone off
- Press and hold the VOLUME DOWN key
- Keep it pressed, connect the USB cable to your PC
- Phone will have green LED indicating it is in "Flashmode"
- Flashtool will start flashing, now you can release the volume key
- Flashtool takes a couple of minutes, let it finish to 100%
- Disconnect the USB cable
- Press the Power button to turn on your phone
- Thefirst boot takes a while, dn't worry
- Have fun !!
PS: PLEASE REMEMBER TO SAY "THANKS" to Bin4ry (the guy who uploaded the firmware) and Androxyde (the guy who gave us the Flashtool)
.
Click to expand...
Click to collapse
First i want to say thank you!
Then Plz answer me some FAQ
- after flash how is the bootloader and rooting status, and simlock status?
- language keyboard including vietnammes?
- after flash could i use pccomparision nomal?
Sent from my LT26i using Tapatalk 2

dynamic503 said:
First i want to say thank you!
Then Plz answer me some FAQ
- after flash how is the bootloader and rooting status, and simlock status?
- language keyboard including vietnammes?
- after flash could i use pccomparision nomal?
Sent from my LT26i using Tapatalk 2
Click to expand...
Click to collapse
1.- Nothing changes. This will only UPDATE the Android system, this will NOT SIM-unlock, unlock or relock bootloader, or root
2.- Yes: I sid ALL languages
3.- I don´t know (I never use it) but I guess yes you could (why not?)

We should take note of unchecking debugging mode in developments before using flashtool to upgrade if you do not want to meet several issues.
Sent from my LT26i using Tapatalk 2

Sorry for this noob question, but
If i have a hong kong version xperia s, after flashing this Switzerland version, will it stay the same as a hong kong phone? Or it will be forever a Switzerland version? If there will be any OTA in the future, which ota update should i be expecting by that time, thank you in advance
Sent from my Sony Tablet S using xda premium

Montague said:
Sorry for this noob question, but
If i have a hong kong version xperia s, after flashing this Switzerland version, will it stay the same as a hong kong phone? Or it will be forever a Switzerland version? If there will be any OTA in the future, which ota update should i be expecting by that time, thank you in advance
Sent from my Sony Tablet S using xda premium
Click to expand...
Click to collapse
1.- it will have switzerland version software of course, and you will be expecting OTAs from this software version, but I wouldn't recommend it
2.- you can always change your software with flashtool
but if you want to use official ways (OTA or PC Companion) then better keep the original software or reflash the original software
With flashtool you can flash this software today and return to your original software tomorrow (should an OTA appears in your region), you can change as many times as you wish

gtrab said:
2.- you can always change your software with flashtool
but if you want to use official ways (OTA or PC Companion) then better keep the original software or reflash the original software
Click to expand...
Click to collapse
Thank you
and for number 2, how can I keep the original software? Is there any ways to back up the software FTF file??

Montague said:
Thank you
and for number 2, how can I keep the original software? Is there any ways to back up the software FTF file??
Click to expand...
Click to collapse
yes you can search for an already-made FTF of your software
or you can make your own with flashtool, search the forum for the how-to

gtrab said:
yes you can search for an already-made FTF of your software
or you can make your own with flashtool, search the forum for the how-to
Click to expand...
Click to collapse
Much appreciated!
And my last final question is, will this wipe out all user data and the apps? I didnt really see anything about these on the first post(If i missed any I apologize)
will the OTA/PC Companion do the same

Montague said:
Much appreciated!
And my last final question is, will this wipe out all user data and the apps? I didnt really see anything about these on the first post(If i missed any I apologize)
will the OTA/PC Companion do the same
Click to expand...
Click to collapse
Some users avoid wiping all user data but face issues afterwards
It ss always recommended to let the update wipe everything
PC Companion and OTA will wipe everything as well because that's the right way to make such a big update
I will add this to the guide tomorrow
PS: I use SMS backup and restore from google play to backup my SMS messages, and I backup my whatsapp messages from inside whatsapp (it has a backup option). Everything else (including settings, calls, apps, etc) is auto-restored by google

Few Questions
1)After i update to this 4.0.4 (Switzerland) can i update my phone when my country gets the 4.0.4 update again (Using sony update service software) or i have again download my country 4.0.4 and flash it again with flash tool
2)Will it Void warrenty

Now we need a noob step by step guide to bootloader unlocking and rooting a kernel for cpu overclocking

Ben36 said:
Now we need a noob step by step guide to bootloader unlocking and rooting a kernel for cpu overclocking
Click to expand...
Click to collapse
ya even i need

i'll post my problem here too maybe who see this discussion can help me! my previous custom rom was Ka08 with doomkernel, and now with new ICS wifi doesn't work anymore! i tryed to reflash wifi stock module too provvided from doomkernel thread but nothing happend...still not work! i removed doomkernel and flashed the original kernel.sin inside the new ICS firmware as the guide said, but WIFI still not work! someone got same problem or there is a solution for this please?

Questions:
Flashing via flashtool will it voi warranty?
If I flash this, will I be able to update via PCC again or not?
Where can I find a GB world generic ftf file?

If I flash like this, without waiting for O2, will it void my warranty?

Great guide!

merci!
Merci a lot!

[repair][arc/arc s]unbrick and restore to stock

If you messed up your ROM by installing wrong kernel, not wiping data, doing stuff in the wrong order etc, and your ROM doesn't start and you don't know how to fix it...
Follow these instructions to return to:
1. Stock Gingerbread
2. Stock ICS
3. Stock ICS + root
1. Choose appropriate FTF file and download:
ONLY LT15i
.62 firmware: http://uploaded.to/file/lpdhtmqi/LT15i_4.0.2.A.0.62_Generic Global World.ftf
.42 firmware: http://uploaded.to/file/vmfu4czg
ONLY LT15a
.62 firmware: http://uploaded.to/file/f58llc72
ONLY LT18i
.62 firmware: http://uploaded.to/file/gsfx4w60
2. Download and install flashtool https://github.com/Androxyde/Flashtool/zipball/master
3. In settings on phone, allow unknown sources, turn on usb debugging. (if you can't start your phone, ignore.)
4. Turn off phone.
5. Connect usb cable to phone, hold back key while plugging the USB to the pc. LED is now GREEN
6. Open flashtool, drag the downloaded FTF file to the flashtool window. Press ok.
7. You may need to reconnect the phone the same way as before.
8. The stock GB is now flashing. Gingerbread 2.3.4 INSTALLED
From here the phone is fixed and you can do whatever you want.
ICS:
9. Connect the phone to the computer and install ics 4.0.3 via pc companion/sony update service.
ROOT:
10. Download rootkit: http://bit.ly/ert_xperia_2011_ics_1
11. Extract files anywhere.
12. Again make sure unknown sources are allowed, turn on usb debugging.
13. Run runme.bat
Phone is now rooted.
I can not guarantee that this will work for you/your device however I am quite confident that if you follow the instructions carefully you will succeed.
Please press THANKS if I helped.

Not helpful with people for ICS, why would you do this when there are so many threads like this?

MrModMan said:
Not helpful with people for ICS, why would you do this when there are so many threads like this?
Click to expand...
Click to collapse
This can be helpful for anyone whose ROM isn't working. It is directed to noobs who accidentally ruins their custom ROM so they can start over. Also the reason why I'm doing this is because I searched the forums and I could not find a guide that was simple for noobs to understand, which would always work no matter what you did wrong. I've used this method so many times and it has saved me countless times. I thought the least I could do was to share.
I hope I answered your questions.

Why why why do People use uploaded.to links, and feel the need to rehost files to it. Just link directly to the flashtool and use mediafire for anything else.
Sent from my CM9'd Arc

XperienceD said:
Why why why do People use uploaded.to links, and feel the need to rehost files to it. Just link directly to the flashtool and use mediafire for anything else.
Sent from my CM9'd Arc
Click to expand...
Click to collapse
I collected links from different guides/threads on youtube and xda and assembled them into this full guide. I did not bother to re-upload the files because I did not find it necessary though I agree, mediafire is really good. I will change flashtool link.

Thanks for taking the time to make this guide, sadly when I was a real noob I couldn't find any guide like this...
Sent from my LT18i using xda app-developers app

Great guide, got my phone back up and running :good:
Sent from my LT18i

quite handy for those who tried jelly and got stucked.

Unverified fast download for stock GB ROM.
http://minus.com/lbq1F5p8H17EA0

Thanks phone starts now.. Cant update to ICS but.
Charl96 said:
If you messed up your ROM by installing wrong kernel, not wiping data, doing stuff in the wrong order etc, and your ROM doesn't start and you don't know how to fix it...
Follow these instructions to return to:
1. Stock Gingerbread
2. Stock ICS
3. Stock ICS + root
1. Choose appropriate FTF file and download:
ONLY LT15i
.62 firmware: http://uploaded.to/file/lpdhtmqi/LT15i_4.0.2.A.0.62_Generic Global World.ftf
.42 firmware: http://uploaded.to/file/vmfu4czg
ONLY LT15a
.62 firmware: http://uploaded.to/file/f58llc72
ONLY LT18i
.62 firmware: http://uploaded.to/file/gsfx4w60
2. Download and install flashtool https://github.com/Androxyde/Flashtool/zipball/master
3. In settings on phone, allow unknown sources, turn on usb debugging. (if you can't start your phone, ignore.)
4. Turn off phone.
5. Connect usb cable to phone, hold back key while plugging the USB to the pc. LED is now GREEN
6. Open flashtool, drag the downloaded FTF file to the flashtool window. Press ok.
7. You may need to reconnect the phone the same way as before.
8. The stock GB is now flashing. Gingerbread 2.3.4 INSTALLED
From here the phone is fixed and you can do whatever you want.
ICS:
9. Connect the phone to the computer and install ics 4.0.3 via pc companion/sony update service.
ROOT:
10. Download rootkit: http://bit.ly/ert_xperia_2011_ics_1
11. Extract files anywhere.
12. Again make sure unknown sources are allowed, turn on usb debugging.
13. Run runme.bat
Phone is now rooted.
I can not guarantee that this will work for you/your device however I am quite confident that if you follow the instructions carefully you will succeed.
Please press THANKS if I helped.
Click to expand...
Click to collapse
Thanks a lot.. This worked of LT15i.. My phone is up and running on GB 2.3.4 but it doesn't get updated to ICS thru Sony update service/pc companion. I tried it 2-3times & it give the same error. "The phone contains modified software that cannot be updated" See attached Screenshot.
How to upgrade to ICS now ? Any other way ?

NilayS said:
How to upgrade to ICS now ? Any other way ?
Click to expand...
Click to collapse
The same way you flashed GB, except use ICS ftf's and root methods.

XperienceD said:
The same way you flashed GB, except use ICS ftf's and root methods.
Click to expand...
Click to collapse
Thanks.. searching the development thread for stock ics ftfs.. BTW do you have any working ICS ftf links ?

NilayS said:
Thanks.. searching the development thread for stock ics ftfs.. BTW do you have any working ICS ftf links ?
Click to expand...
Click to collapse
See my Arc guide, or Google or general browsing of the forum will help with your search.

NilayS said:
Thanks a lot.. This worked of LT15i.. My phone is up and running on GB 2.3.4 but it doesn't get updated to ICS thru Sony update service/pc companion. I tried it 2-3times & it give the same error. "The phone contains modified software that cannot be updated" See attached Screenshot.
How to upgrade to ICS now ? Any other way ?
Click to expand...
Click to collapse
If you bootloader is unlocked NEVER accept updates OTA unless you want to brick your phone!
Sent from my Xperia Arc S using xda premium

cannot update
After following the link, my phone is on stock GB 2.3.4 so obviously i connected my device to pc to get official 4.0 update via sony PC companion and after it downloads the software and tries to install it into my phone it says "your device contains modified software which cannot be updated" please help !!

Not helping me
Charl96 said:
This can be helpful for anyone whose ROM isn't working. It is directed to noobs who accidentally ruins their custom ROM so they can start over. Also the reason why I'm doing this is because I searched the forums and I could not find a guide that was simple for noobs to understand, which would always work no matter what you did wrong. I've used this method so many times and it has saved me countless times. I thought the least I could do was to share.
I hope I answered your questions.
Click to expand...
Click to collapse
I have same problem with my ARC S, but by following the instructions flashtool stuck at device connected in flash mode and goes no where and my device turn off automatically.

Connect your device only when prompted to by flashtool.
Sent from my LT18i using xda app-developers app

Thanks for reply but
tangosierra_ said:
Connect your device only when prompted to by flashtool.
Sent from my LT18i using xda app-developers app
Click to expand...
Click to collapse
Thanks for reply but i have followed all instruction by flashtool and i had connected device when flashtool told me to do so but in vain. can you help me?

xda_hawk said:
After following the link, my phone is on stock GB 2.3.4 so obviously i connected my device to pc to get official 4.0 update via sony PC companion and after it downloads the software and tries to install it into my phone it says "your device contains modified software which cannot be updated" please help !!
Click to expand...
Click to collapse
I understand this reply is far too late but for people in the future:
You cannot upgrade to ICS when your bootloader is unlocked. You can easily lock it again using this small FTF file. When the upgrade with PC companion is complete, you can continiue modifying your phone with custom ROMs etc.

junaidtahir said:
Thanks for reply but i have followed all instruction by flashtool and i had connected device when flashtool told me to do so but in vain. can you help me?
Click to expand...
Click to collapse
It is very hard for me to know what is causing this problem. Some minor modifications to the flashing procedure can potentially fix it. Try doing it like this: Open FlashTool, drag the FTF-file and drop it in the dialog box. Press ok and wait for the instructions to pop up. When they do, connect the USB-cable FIRST to the phone and after that hold back key while plugging it to the computer. If the battery of the phone is too low I think it can cause problems, try to charge your battery (if possible) and try again. Also make sure to flash the appropriate FTF-file, accordning to your model.

[Q]Rogers Xperia Arc FastBoot/Recovery/Lock Code Issues

Hey there, I have someone who locked themselves out of their Rogers Sony Xperia Arc and I'm trying to hard reset the device to remove the code and make the phone usable for them again.
Unfortunately as I've done my research it looks more and more like these branded phones can't be put in to fastboot mode so I can't unlock the bootloader. I've attempted to over ride the drivers, I've plugged the device in while off and held menu and I get a green/yellow LED indicator instead of the blue one I need, and have no access to the actual device itself when turned on due to the screen lock.
Can anyone help? I have the FastBoot folders and the USB drivers (x86 and x64) downloaded and ready to go as well as the key.

Flash a stock ftf or use the Update service, done.

XperienceD said:
Flash a stock ftf or use the Update service, done.
Click to expand...
Click to collapse
I can't access the recovery menu to put it in to download mode. I must apologize if I sound like I don't know what I'm doing. I've never dealt with a Sony device before. Most of my experience is Samsung with a little HTC.
Could you explain what you mean a little bit better? Maybe link a tutorial? I'd be much obliged.

L33t Masta said:
Could you explain what you mean a little bit better? Maybe link a tutorial? I'd be much obliged.
Click to expand...
Click to collapse
..
XperienceD said:
The Flashtool, Updating, Unbricking & De-Branding:
PLEASE NOTE:
If you have Un-Locked your Bootloader DO NOT UPDATE Over The Air (O.T.A) or YOU WILL BRICK your Device. If you have Bricked then see THIS thread with how to Restore your Phone.
{RECOVER SOFT-brick}[2012 XPERIA's]Recover ALL 2012 XPERIAs from SOFT-brick
[Remote Support] Fully Repair Dead Xperias Arc/Neo/Play/X10/X8/W8/Mini/MiniPro ALL
The Flashtool is simply what it says on the tin, it's a tool that flashes Firmware to your device in a similar manner as SEUS or PC Companion does except the Flashtool requires .ftf files which can be downloaded from your devices General or Development forum. This is generally the preferred method for Repairing your Phone if SEUS or PC Companion aren't an option or you just prefer not to use them. You can also use the Flashtool to flash a Generic .ftf to your device which will remove any Operator Branding from your device.
This video by BlueChipJ explains the process of using the Flashtool...
...or you can use (specific Phones only) the Official Sony Flash Tool. See maxio1998's thread for more info - [TOOL]Official Sony Flash Tool | Unlocked Devices
Click to expand...
Click to collapse

[Q] Sony Ericsson Xperia Pro MK16i downgradeing to shipped 2.3.4.

Im going to downgrade my Sony Ericsson Xperia Pro MK16i from the latest Android 4.0.4 to shipped 2.3.4.
The reason is that with version 4.0.4 my phone slowed down terribly.
My phone is NOT rooted and version 4.0.4 has been uploaded/flashed with official Sony software: Sony PC Companion 2.1
As Sony provides no official way to downgrade Android I have searched here a few useful topics:
Firmwares for MK16i - shipped:
http://forum.xda-developers.com/showthread.php?t=1642480
Flashing procedure:
http://forum.xda-developers.com/showthread.php?t=928343
As I am going to do that for the first time in my life and I have some doubts (I dont want to turn my phone into a brick) I want to ask for a few quiestion/advices:
1. just in case downgrade will fail, can I make some kind of backup of my current system and roll it back ?
2. there are no information at the Flashing Procedure about any assumption/requirements eg. "unlocking boot loader" or any other. My phone is not modified at all. Does this procedure still valid ?
3. my phone was bought in Switzerland and (unfortunately) keyboard key Z is switch with Y (possibly some other keys may be different than regular keyboard is). Please note: I use US-English settings instead.
I searched for shipped/default Android OS image (.ftf file). What I have found is:
- pro MK16_4.0.2.A.0.42_GenericDE
- MK16i_1234-7775_4.0.2.A.0.62_Generic_Trade_Central_Europe
- MK16i_4.1.B.0.431_Baltic
Which one of these would be the most suitable ?

czezz said:
Im going to downgrade my Sony Ericsson Xperia Pro MK16i from the latest Android 4.0.4 to shipped 2.3.4.
The reason is that with version 4.0.4 my phone slowed down terribly.
My phone is NOT rooted and version 4.0.4 has been uploaded/flashed with official Sony software: Sony PC Companion 2.1
As Sony provides no official way to downgrade Android I have searched here a few useful topics:
Firmwares for MK16i - shipped:
http://forum.xda-developers.com/showthread.php?t=1642480
Flashing procedure:
http://forum.xda-developers.com/showthread.php?t=928343
As I am going to do that for the first time in my life and I have some doubts (I dont want to turn my phone into a brick) I want to ask for a few quiestion/advices:
1. just in case downgrade will fail, can I make some kind of backup of my current system and roll it back ?
2. there are no information at the Flashing Procedure about any assumption/requirements eg. "unlocking boot loader" or any other. My phone is not modified at all. Does this procedure still valid ?
3. my phone was bought in Switzerland and (unfortunately) keyboard key Z is switch with Y (possibly some other keys may be different than regular keyboard is). Please note: I use US-English settings instead.
I searched for shipped/default Android OS image (.ftf file). What I have found is:
- pro MK16_4.0.2.A.0.42_GenericDE
- MK16i_1234-7775_4.0.2.A.0.62_Generic_Trade_Central_Europe
- MK16i_4.1.B.0.431_Baltic
Which one of these would be the most suitable ?
Click to expand...
Click to collapse
MK16i_4.1.B.0.431_Baltic is 4.0.4, not 2.3.4
I would recommend you to flash 0.62 firmware
- Download the firmware and paste it in Flashtool/firmwares
- Open Flashtool
- Connect the device in flashmode (i believe u have installed flashmode drivers. If not, they are in /Flashtool/drivers
- Press the scar button/flashmode/ and then select the firmware you downloaded. Press start. When finishes it will reboot. Now you are done
If u have any question, ask it, but read tutorials first.
Cheers, hope it helps.

Cm 10.1 (JB)
@czezz bro Y U NO try Jelly Bean cm10.1
Leave those crappy laggy GB & ICS and try cynogenmod ...these rom r fast and smooth with no lag

Hi,
thank you very much for your replies.
Assumptions:
1. For this point it is not clear to me will I be able to restore my phone to any working configuration in case flashing procedure fails ?
2. I assume there are no additional requirements. Simply follow the steps http://forum.xda-developers.com/showthread.php?t=928343
3. As luiseteyo suggested, I will use 0.62 firmware (I guess 0.62 = MK16i 4.0.2.A.0.62 (1251-0386) )
@shareupload:
thank you for suggestion.
First I will do a very basic operation - flashing with shipped/default firmware (Android OS image ?).
Afterwards, yes I will be interested to do some improvement to my phone. However for that I think I need to read some basic information just to be sure what am I doing and avoid turning my phone into a brick.

It doesnt work at all.
I have followed the instruction. FlashTool tels me that I need to install drivers while I have installed all drivers available in Flashtool\drivers
Please look at the print screen - it also shows that I have all drivers.
However, during procedure when I turn off the phone, unplug the cable, hold back button and then plug cable back again it tells me that I dont have drivers...
SO CONFUSING ((
Here is a print screen: imageshack.us/photo/my-images/163/wuds.png/?sa=0
Can anyone please advice what is wrong ???
My phone: SE MK16i

czezz said:
It doesnt work at all.
I have followed the instruction. FlashTool tels me that I need to install drivers while I have installed all drivers available in Flashtool\drivers
Please look at the print screen - it also shows that I have all drivers.
However, during procedure when I turn off the phone, unplug the cable, hold back button and then plug cable back again it tells me that I dont have drivers...
SO CONFUSING ((
Here is a print screen: imageshack.us/photo/my-images/163/wuds.png/?sa=0
Can anyone please advice what is wrong ???
My phone: SE MK16i
Click to expand...
Click to collapse
What Windows are you using?

its Windows 7 Home Premium x64, SP1.
Does it matter ?

czezz said:
its Windows 7 Home Premium x64, SP1.
Does it matter ?
Click to expand...
Click to collapse
I asked it, because I had some issues on Windows 8.
Did you install Flashmode drivers and the drivers specific to your device?

Someguyfromhell said:
I asked it, because I had some issues on Windows 8.
Did you install Flashmode drivers and the drivers specific to your device?
Click to expand...
Click to collapse
Hey, as I have written I have installed all available in Flashtool\drivers. Though there is no specific driver for MK16 (why ???)
Additionally, I have installed latest PC Companion.
No luck ((

czezz said:
Hey, as I have written I have installed all available in Flashtool\drivers. Though there is no specific driver for MK16 (why ???)
Additionally, I have installed the latest PC Companion.
No luck ((
Click to expand...
Click to collapse
I know it's an old thread. But, if anyone would face this situation then the solution is that:
1. You need to select(tick) the drivers of your specific model along with flash mode and fast boot(top 2 options) while installing the drivers.
2. When you see the driver selection screen then just hover your mouse over the available drivers to see/find the name of your particular phone and tick that.
3. Remember that there can be 2 or more drivers for the same phone in the selection menu. So, scroll through the entire list and select all the drivers that have your phone name on it.
Also, as of 2020, if you are having a 2011 series Sony Ericsson mobile. Then you need an older flashtool version(not the latest). For Eg 9.13 flashtool version worked for my Sony Erisson MK16i on Windows 8. But, the latest version had some driver & compatibility issues for older phones.