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[Q] How to fix xperia z3 if the lower key button during flashmode can't be detected?

guys im in desperate need of help i've installed the drivers for xperia z3 via xperia flashtool drivers the flashtool v9.18.5 seems to fully recognize my phone on boot but as i access flashmode it recognizes my phone as device connected with usb debugging off and as i tried to followed the instruction given on this thread http://forum.xda-developers.com/crossdevice-dev/sony/xperia-z1-z2-z3-series-devices-drm-t2930672 for lollipop can't even bypassed the pop up waiting for flashmode devices screen with some keys to follow so im unable to flash the ftf for the lollipop fully and hoped to relock my bootloader and restore my lost drm keys. currently the only way i can update my phone is by using prf creator.

USB connection doesn't work on Xperia E3 D2202 after install CWM

Hello everyone, sorry again for my bad english
I have a "Little" problem with my Xperia E3 D2202, after unlock the bootloader, i've changed the recovery with this tutorial http://forum.xda-developers.com/xperia-e3/general/noob-friendly-root-recovery-installation-t2989689
Everything finished without errors, but after that, i've conected my phone on my PC and it doesn't recognize it as a USB device and in my Xperia doesn't apperar the USB/Debubbing notification, but my PC recognizes it on Flashmode (Pressing Vol down and connect USB cable) i'm trying to fix it with Sony PC Companion bui it gives me a error code (2003) and the same goes with Flashtool while i'm trying to upgrading to KK 4.4.4
I'm trying to restore the original boot.img but i can't find it, can someone help me with this with a solution?

[Completed] Xperia L stuck on SOny Logo

hi .I just bought an Xperia L (C2105); after few days of using and downloading guge number off apps it got freezed and when i tried to restar it my xperia shows nothing but the Sony Logo until the battery drains so i tried using flashtool but when i select the firmware it says this
x1.this bundle is not valide
x2.thisbundle is not valide
.......
.......
so i searshed and found that there is another tool from sonymobile called emma to flash sony devices and i downloaded it but whenever i connect the phone to the laptop it says this device is locked and cannot be flashed try to unlock the bootloader
so again i went to flashtool and pressed unlock bootloader and connected the Xperia L but after a few seconds the flashtool said that my phone bootloader cannot be officialy unlocked. and i need to check uknown sources and debug mode but thats clearely impossible as the phone is stuck
so i went to pc companion and pressed update service and connected the device and it detected it as soon as i plug the usb cable but it says that i need to update my pc companion and get the version suitable for my device which im sur i downloaded the exact vesion for the xperia L from the sony mobile website
So basicaly non of the tree programmes allow me to flash my xperia L and now i dont know what to do im stuck with an unusable phone .
is there something im missing here flashing a device should be a peace of cake but this device is a hell of headacke
any help please

aloukay said:
hi .I just bought an Xperia L (C2105); after few days of using and downloading guge number off apps it got freezed and when i tried to restar it my xperia shows nothing but the Sony Logo until the battery drains so i tried using flashtool but when i select the firmware it says this
x1.this bundle is not valide
x2.thisbundle is not valide
.......
.......
so i searshed and found that there is another tool from sonymobile called emma to flash sony devices and i downloaded it but whenever i connect the phone to the laptop it says this device is locked and cannot be flashed try to unlock the bootloader
so again i went to flashtool and pressed unlock bootloader and connected the Xperia L but after a few seconds the flashtool said that my phone bootloader cannot be officialy unlocked. and i need to check uknown sources and debug mode but thats clearely impossible as the phone is stuck
so i went to pc companion and pressed update service and connected the device and it detected it as soon as i plug the usb cable but it says that i need to update my pc companion and get the version suitable for my device which im sur i downloaded the exact vesion for the xperia L from the sony mobile website
So basicaly non of the tree programmes allow me to flash my xperia L and now i dont know what to do im stuck with an unusable phone .
is there something im missing here flashing a device should be a peace of cake but this device is a hell of headacke
any help please
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Hi, thanks for using XDA Assist!
Here's your device's main forum area:
http://forum.xda-developers.com/xperia-l
And here's where you should ask for help:
http://forum.xda-developers.com/xperia-l/help
Your device experts are located there.
Good luck!

Can't access flash mode on Xperia Z3.

Hi guys. I can't access flash mode on D6603 model Z3. The phone isn't working. I can't open it with power button. When I plug into a wall charger it only bootloops the sony logo. And when I try to restore it with PC Companion I can't access flashmode. Same with flashtool. Phone isn't rooted and has offical firmware. How can I fix this? I really need help.
Edit: Replaced the battery and now it's working fine.

Xperia Z3 leaving flash mode

Hi,
I have a problem with Xperia z3. I'm trying to flash it. I'm connecting it on flashmode, but after 1 min phone is just turning on. Do You know why?

Use flashmode only when prompt to do it either by flashtools or Sony pc ccompanion. Otherwise flashmode will go off causing the behaviour you describe

Ok, thanks for advice Didn't knew about it