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I am assuming your phone can be bootloader unlocked and you have unlocking key from sony.
If you don't know then refer to this post http://forum.xda-developers.com/showthread.php?t=1527159
WARNING: IT WILL WIPE YOUR PHONE DATA SO MAKE BACKUP
1. Install Flashboot and Fastboot drivers of Flashtool (setup file will be on C:\Flashtool\drivers or similar place).
2. Turn on your phone, and connect with usb debugging on.
3. Go to Plugins-> Bootloader Unlock option, start it.
4. Now it will ask to disconnect your phone and reboot in FLASHMODE.
5. Again reboot your phone in FASTBOOT mode.
6. It will show a window with your IMEI number, insert your unlock key and click "unlock".
7. The device will reboot and you are done!
FLASHMODE
You can get into flashmode by pressing specific hardware key and connecting phone to pc via USB.
It will glow GREEN LIGHT on led if done correctly.
Hardware key-
Back Button (X8, X10, X10 mini, X10 mini pro, Play, Arc, Arc S, Neo, Neo V, Pro)
Volume Down Button (Xperia U,P,S,Sola)
FASTBOOT Mode
You get into fastboot mode by turning off your phone, then pressing the fastboot mode key button, and connecting the USB to your phone. Done correctly and you should see a BLUE LIGHT on the power button.
Hardware key-
Menu Botton (Xperia Arc, Arc S, Neo, Neo V, Pro)
Volume Up Botton (Xperia U,P,S,Sola)
Should the phone be turned off in flashmode??
karimkahale said:
Should the phone be turned off in flashmode??
Click to expand...
Click to collapse
yes, turn off your phone then connect USB while pressing specific key.
same applies for fastboot method
When I am installing drivers, I am getting "don't install or install anyway", I choose install anyway but the same window comes up again. Should my phone be turned on, off or in flashmode or something?
karimkahale said:
When I am installing drivers, I am getting "don't install or install anyway", I choose install anyway but the same window comes up again. Should my phone be turned on, off or in flashmode or something?
Click to expand...
Click to collapse
it asked me 3-4 times and i chose "install anyway", and phone doesn't need to be connected while installing drivers.
I got an error in last step : Failed (remote: oem unlock failed ). This happened to me too when i used the official way to unlock my sony xperia p. Can someone help?
karimkahale said:
I got an error in last step : Failed (remote: oem unlock failed ). This happened to me too when i used the official way to unlock my sony xperia p. Can someone help?
Click to expand...
Click to collapse
did u check that your device can be unlocked or not?
Yes I checked, it can be unlocked
If you have installed Flashtools and its drivers correct you shouldn't get any driver prompts when plugging the phone in
Assuming you did a default install browse to C:\Flashtool\drivers and execute the drivers file. Make sure you select the drivers for you phone ie "Xperia U" and scroll to the bottom of the list and select Flashboot and Fastboot drivers. From what I have seen so far most people are not installing these 3 drivers.
karimkahale: I would go back to the Sony website and get your unlock code again. Maybe you entered some wrong details...
Please help me out,
when I am trying to install fastboot drivers from flashtools drivers folder, I am getting an error saying driver installation failed.
My os is windows 8 pro 64bit..My phone Xperia U (ICS)
What should I do.
Utkarsh-ezzo said:
Please help me out,
when I am trying to install fastboot drivers from flashtools drivers folder, I am getting an error saying driver installation failed.
My os is windows 8 pro 64bit..My phone Xperia U (ICS)
What should I do.
Click to expand...
Click to collapse
Trouble shoot compatibility
Sent from my ST25i using Tapatalk 2
Rajul said:
Trouble shoot compatibility
Sent from my ST25i using Tapatalk 2
Click to expand...
Click to collapse
Successfully installed Fastboot driver on windows 8 (Used Advance Startup for installing unsigned drivers)through Flashtools and also unlocked bootloader..
Accidently lost all data as unlocking bootloader wipes data...forgot to take a backup but m happy.
Thank you for this tutorial mate!
It's better if we can get unlock key from flashtool
Sent from my MT27i using xda premium
Thanks a million, but would my warranty be void immediately after I unlock the bootloader, what's the regulation about this matter, I'd like to keep my warranty.
---------- Post added at 10:00 AM ---------- Previous post was at 09:45 AM ----------
If i relocked the boot loader the warranty wouldn't be void, right?
Not quite;
It all depends on your repairman...
The standard, though, is, that the warranty is valid if the guys at the repair center can flash a stock ROM (.ftf) onto the phone. Some phones can do this without their bootloader being locked, but some can't do this after their bootloaders are unlocked, even if they are locked back afterwards...
Now, I have a question:
I'm having the same error as karimkahale...
Whatever I do, I get that stupid error, and not even Sony can help me (their support team (that needs a week to reply to a simple e-mail) said that thy don't know how to help)...!
Thanks a lot for the guide, it was really helpful!
Cheers!
Relock the Bootloader
Can we relock the boot loader using flash tool???
rachinda said:
Can we relock the boot loader using flash tool???
Click to expand...
Click to collapse
You have to, actually....
To relock, you need to flash a ftf file via FlashTool...
Help me I can't seem to choose unlock bootloader from the plugin button?
hi I cannot access flashboot mode with back button. (button works) I try with flashtool, sony pc comanion, s1tool but no reaction on back button. s1tool shows this error "The system can not find file specified".
can anyone help ????
I unlock bootloader and lost network operator signal.
pin+puk combination doesn't help
.
to relock bootloader with s1tool , i need to enter flashboot mode. so i am stuck.
i'm using stok kernel whis cm7
phone xperia x10 mini pro u20i
thanks for help
bachosh said:
hi I cannot access flashboot mode with back button. (button works) I try with flashtool, sony pc comanion, s1tool but no reaction on back button. s1tool shows this error "The system can not find file specified".
can anyone help ????
I unlock bootloader and lost network operator signal.
pin+puk combination doesn't help
.
to relock bootloader with s1tool , i need to enter flashboot mode. so i am stuck.
i'm using stok kernel whis cm7
phone xperia x10 mini pro u20i
thanks for help
Click to expand...
Click to collapse
Connect your phone to the pc with your usb-cable
When s!tool asks you to enter flash-mode, press home and power buttons at the same time. As soon as the screen turns black (backlight off) release those two and press the back-button. Failing that, take out your battery for a minute or so and then try again.
SmG67 said:
Connect your phone to the pc with your usb-cable
When s!tool asks you to enter flash-mode, press home and power buttons at the same time. As soon as the screen turns black (backlight off) release those two and press the back-button. Failing that, take out your battery for a minute or so and then try again.
Click to expand...
Click to collapse
same problem. i also try reboot manager apl no reaction. is it posible to restore bootloader without flashboot mode?
bachosh said:
same problem. i also try reboot manager apl no reaction. is it posible to restore bootloader without flashboot mode?
Click to expand...
Click to collapse
No, flashmode is necessary for bootloader and kernel operations, there is no other way. Nothing you can do to your phone will disable that, apart from a broken back-button or a broken usb-port. If taking out the battery didn't help i'm not quite sure what you should try.
SmG67 said:
No, flashmode is necessary for bootloader and kernel operations, there is no other way. Nothing you can do to your phone will disable that, apart from a broken back-button or a broken usb-port. If taking out the battery didn't help i'm not quite sure what you should try.
Click to expand...
Click to collapse
can cwm recowery mode help? there is multiboot option but i dont know how to use it
bachosh said:
can cwm recowery mode help? there is multiboot option but i dont know how to use it
Click to expand...
Click to collapse
Nope, you will need flashmode to relock the bootloader. Apparently it was avaiable for you to unlock the bootloader, so i'm not sure why you can't access it now.
SmG67 said:
Nope, you will need flashmode to relock the bootloader. Apparently it was avaiable for you to unlock the bootloader, so i'm not sure why you can't access it now.
Click to expand...
Click to collapse
I just run exe file msm7227_semc (s1tool folder) without flashboot mode. after that my sim card was locked.
bachosh said:
I just run exe file msm7227_semc (s1tool folder) without flashboot mode. after that my sim card was locked.
Click to expand...
Click to collapse
I found solution !!!
:laugh:
:laugh:
turn off phone . press camera button and connect to pc . it will instal some semc usb drivers. then restart PC.
congrads falshboot mode is avaible :fingers-crossed:
I'm using Xperia Active st17i and i tried a everything to get into fastboot with no success, i have 2 computers, one with windows 8.1 32bit and other with windows 7 32 bit, on both of them tried everything and couldn't get into fastboot mode, tried a lot of drivers from internet, flashtool drivers, and when i turn off phone, wait 5-10 seconds, hold volume + button and plug usb into phone, the phone just turn on normaly and start charging
Can anyone help ?
Thanks in advance.
senadin001 said:
I'm using Xperia Active st17i and i tried a everything to get into fastboot with no success, i have 2 computers, one with windows 8.1 32bit and other with windows 7 32 bit, on both of them tried everything and couldn't get into fastboot mode, tried a lot of drivers from internet, flashtool drivers, and when i turn off phone, wait 5-10 seconds, hold volume + button and plug usb into phone, the phone just turn on normaly and start charging
Can anyone help ?
Thanks in advance.
Click to expand...
Click to collapse
did you unlock your bootloader?? (can do this on sony official site...)
to use fastboot you need to unlock your bootloader.
bejunk said:
did you unlock your bootloader?? (can do this on sony official site...)
to use fastboot you need to unlock your bootloader.
Click to expand...
Click to collapse
Ohh, how can i unlock my bootloader when...when i bought my phone i chacked if bootloader can be unlocked, and bootloader unlock allowed was "YES", and i factory reset phone, and now bootloader unlock allowed status is "NO", how can that be possible?
senadin001 said:
Ohh, how can i unlock my bootloader when...when i bought my phone i chacked if bootloader can be unlocked, and bootloader unlock allowed was "YES", and i factory reset phone, and now bootloader unlock allowed status is "NO", how can that be possible?
Click to expand...
Click to collapse
hmm that sounds crazy. idk how this could be.....
but what you can do is:
1. download sony pc companion software & reset, repair or update the phone if avaiable.
=> if still bootloader unlock allowed: NO then:
2. download & install flashtool. after iit install install its drivers from flashtool/drivers folder (need your phone driver + fastboot + flash driver) optional: install android SDK. (just leave all it is & press install packages.) if you done, flash a stockICS.ftf (<= firmware) like shown on this page: http://talk.sonymobile.com/t5/Android-development/GUIDE-How-to-Install-Jelly-Bean-ICS-Ice-Cream-Sandwich-and/td-p/154389 (you can download the firmware there, just make sure you choose your model right. use ICS .587) (boot once)
now look if bootloader unlock allowed....
if still : NO, then maybe ask your carrier where u get this phone. normally if your contract is end, they unlock your device for free (its here like that.)
you can also try just to request a code from sony site & try to unlock it maybe you are lucky. (you said you was allowed on pre version)
good luck!!!
the thing is if your bootloader locked = no cutom kernels = NO JB or KK rom for you. only stock based custom roms for locked bl...
Hi Dev's,
verified the bootloader can be unlocked via *#*#7378423#*#*
installed the fastboot, flashmode & sony xperia z ultra drivers from the flashtool 0.9.18.2 installer (flashtool.net)
on windows 8.1 with deactivated driver compatibility check.
Now i've tried all 3 methods to enter into fastboot mode from here
(theandroidsoul.com/sony-xperia-z-ultra-fastboot-mode)
via volume up + usb in, adb & quick boot reboot (even if the device is not rooted at the moment)
, but no success. The device always starts into flashmode, and this is the only state being recognized by the flashtool in windows. All hardware keys are working fine.
Any more ideas how to enter fastboot? I am really stucked at the moment.
Thank you!
what does it do on vol down and usb in?
You are doing this from a powered off state?
Hi,
I really tried every method and button combination. it is just the same as in this thread I found later.
http://forum.xda-developers.com/showthread.php?t=2716418
Seems like the fastboot mode is being hardware locked or something.
I return the device tomorrow, and check a new one (if I get) with android 4.2 stock Rom.
xeedi said:
Hi,
I really tried every method and button combination. it is just the same as in this thread I found later.
http://forum.xda-developers.com/showthread.php?t=2716418
Seems like the fastboot mode is being hardware locked or something.
I return the device tomorrow, and check a new one (if I get) with android 4.2 stock Rom.
Click to expand...
Click to collapse
Don't forget to re-lock the bootloader!
Hi
I have the same problem as you can see any of the answers to help you.
http://forum.xda-developers.com/xpe...ice-s1boot-t2890421/post55779447#post55779447
But I still can not run fastbott.
I hope this might help, idk about vol+ goes into flashmode, but have u tried to unplug and replug it?
just wondering
xeedi said:
Hi Dev's,
verified the bootloader can be unlocked via *#*#7378423#*#*
installed the fastboot, flashmode & sony xperia z ultra drivers from the flashtool 0.9.18.2 installer (flashtool.net)
on windows 8.1 with deactivated driver compatibility check.
Now i've tried all 3 methods to enter into fastboot mode from here
(theandroidsoul.com/sony-xperia-z-ultra-fastboot-mode)
via volume up + usb in, adb & quick boot reboot (even if the device is not rooted at the moment)
, but no success. The device always starts into flashmode, and this is the only state being recognized by the flashtool in windows. All hardware keys are working fine.
Any more ideas how to enter fastboot? I am really stucked at the moment.
Thank you!
Click to expand...
Click to collapse
I had this same problem some months ago .Never saw a way around it . Since the phone was still like 1 month old I had to return it to sony and got a new one !
Lots of guys helped but was no way to get it working , even had to borrow 2 different laptops to try it
Hi - have been searching these forums for days now but cant find a solution.
I am OK at flashing etc but am stuck now. Phone is stuck at Sony logo and won't go any further.
Phone is an Xperia M4 (E2303) and the bootloader is locked - have tried unlocking it but get 'Failed - command not allowed' so i'm guessing it is not unlockable!
I can't get into recovery (nothing happens when i try) and cant get into FlashMode either. I plug usb into phone while holding the volume down key. I CAN get into Fastboot mode which seems to work fine and is recognized ok by PC - drivers all installed ok.
Is there a way of flashing an FTF using Fastboot rather than Flashmode? or even installing any recovery. I have 32 and 64-bit Flashtool installed, i have FTF files and i have EMMA.
Can anyone help please? I would be very grateful - many thanks - ian
With bootloader locker you won't be able to flash anything. I had the same problem.
Desperately, my friend thought it was a good idea to put the phone on the refrigerator for a while.
Surprisingly, in the next day, I turned it on and the cold phone booted normaly and then I was able to set OEM unlock authorization on developer settings and unlocked the bootloader with sony unlock key.
Then I tried to flash a twrp, but I'm stuck back on boot loop again, and fridge didn't help this time.
Power OFF phone, then hold together for at least 30 sec in this order "volume down" + "volume up" + "power button". Then release 3 buttons and try to power on phone with power button. This procedure will revert your phone back to default settings.
I have the Same Issue Is your problem Solved?
nitinvaid said:
I have the Same Issue Is your problem Solved?
Click to expand...
Click to collapse
Read this tread. It worked for me! Good luck!
Hi there,
Same problem as OP here.
I am trying to revive my wife ex-phone, model 2303 which has been forgotten for two years at least.
Stock rom
No root
Bootloader locked
Stuck at Sony Logo when starting up the phone.
Can boot in FastBoot (blue light) and is detected by PC
Can boot in FlashMode (green light) but PC doesn't detect anything. Nothing appears in Peripherals.
Any advices ?
What can be done in FastBoot mode with a locked bootloader ?
LoLoBear said:
Hi there,
Same problem as OP here.
I am trying to revive my wife ex-phone, model 2303 which has been forgotten for two years at least.
Stock rom
No root
Bootloader locked
Stuck at Sony Logo when starting up the phone.
Can boot in FastBoot (blue light) and is detected by PC
Can boot in FlashMode (green light) but PC doesn't detect anything. Nothing appears in Peripherals.
Any advices ?
What can be done in FastBoot mode with a locked bootloader ?
Click to expand...
Click to collapse
Try using official flash tool Emma from Sony.
https://developer.sony.com/develop/open-devices/get-started/flash-tool/download-flash-tool/
linccracker said:
Try using official flash tool Emma from Sony.
https://developer.sony.com/develop/open-devices/get-started/flash-tool/download-flash-tool/
Click to expand...
Click to collapse
Also Xperia companion will install all needed drivers and could also recover device.
https://www.sony.co.uk/electronics/support/articles/00236877
Thank your for your advices.
But in Flashmode the phone does not even appear in computer peripherals manager.
In FastBoot, Sony Emma does not detect phone neither.
LoLoBear said:
Thank your for your advices.
But in Flashmode the phone does not even appear in computer peripherals manager.
In FastBoot, Sony Emma does not detect phone neither.
Click to expand...
Click to collapse
Have you tried using an older version of flashtool ?
Hi, sorry for the late reply.
Which version of flashtool would you recommend ?
Would it change anything as the phone is not detected in device manager anyway ?