Database Develop

[Q] Can't Flash Stock Kernel With CWM

Hi. I''m having problem flashing Stock Kernel with CWM. I am following this guide
http://forum.xda-developers.com/showthread.php?t=2439298&page=2&nocache=1
The OP ask not to pm him, and i don't have privileges to post on that forum section.So please help me. Here's the attach log.
13/039/2013 04:39:57 - INFO - Device connected with USB debugging on
13/039/2013 04:39:58 - INFO - Connected device : Sony Xperia Z1
13/039/2013 04:39:58 - INFO - Installed version of busybox : N/A
13/039/2013 04:39:58 - INFO - Android version : 4.2.2 / kernel version : 3.4.0-perf-gde8296d-02194-ga2561a5 / Build number : 14.1.G.1.518
13/039/2013 04:39:58 - INFO - Checking root access
13/039/2013 04:39:58 - INFO - Root Access Allowed
13/048/2013 04:48:03 - INFO - Please wait device is rebooting into fastboot mode (via ADB)
13/048/2013 04:48:04 - INFO - Device will soon enter fastboot mode
13/048/2013 04:48:04 - INFO - Device disconnected
13/048/2013 04:48:06 - INFO - Device connected in fastboot mode
13/048/2013 04:48:31 - INFO - Selected kernel (boot.img or kernel.sin): D:\adv-stock-v2.img
13/048/2013 04:48:31 - INFO - Flashing selected kernel
13/048/2013 04:48:32 - INFO - sending 'boot' (13254 KB)...
13/048/2013 04:48:32 - INFO - OKAY [ 0.444s]
13/048/2013 04:48:32 - INFO - writing 'boot'...
13/048/2013 04:48:32 - INFO - FAILED (remote: Command not allowed)
13/048/2013 04:48:32 - INFO - finished. total time: 0.447s
13/048/2013 04:48:32 - INFO - FASTBOOT Output:
sending 'boot' (13254 KB)...
OKAY [ 0.444s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.447s
Click to expand...
Click to collapse

frostchill said:
Hi. I''m having problem flashing Stock Kernel with CWM. I am following this guide
http://forum.xda-developers.com/showthread.php?t=2439298&page=2&nocache=1
The OP ask not to pm him, and i don't have privileges to post on that forum section.So please help me. Here's the attach log.
Click to expand...
Click to collapse
Have you unlocked your bootloader?

Yes
sofir786 said:
Have you unlocked your bootloader?
Click to expand...
Click to collapse
Yes i have, After it's done, when i finish unlock the bootloader it just say Okay... Finish. Is there any way to check to c if it's lock or unlock?

Check *#*#service#*#*
Dial it on your phone to see
Sent from my C6903 using xda premium

All that said was boot loader unlockable: yes
Sent from my C6903 using XDA Premium 4 mobile app

Then your boot loader is not unlocked yet, but your are able to unlock it. Google Sony unlock boot loader instructions and follow the guide
Sent from my C6903 using Tapatalk now Free

Hmz
gregbradley said:
Then your boot loader is not unlocked yet, but your are able to unlock it. Google Sony unlock boot loader instructions and follow the guide
Sent from my C6903 using Tapatalk now Free
Click to expand...
Click to collapse
I wonder if it matter, cuz i'm using the Dual Recovery for locked bootloader. now i try to get on to TWRP or CWM and stuck on boot loop.
I followed the guide. still the same thing =/

frostchill said:
I wonder if it matter, cuz i'm using the Dual Recovery for locked bootloader. now i try to get on to TWRP or CWM and stuck on boot loop.
I followed the guide. still the same thing =/
Click to expand...
Click to collapse
No, the problem is that you have not unlocked the bootloader yet.
Google sony unlock bootloader and follow the instructions.
But if you are flashing a complete stock kernel then you can flash a FTF for your phone and exclude everything except kernel. Use flashtool to do this not recovery

gregbradley said:
No, the problem is that you have not unlocked the bootloader yet.
Google sony unlock bootloader and follow the instructions.
But if you are flashing a complete stock kernel then you can flash a FTF for your phone and exclude everything except kernel. Use flashtool to do this not recovery
Click to expand...
Click to collapse
is there away to use flashtool to unlock bootloader too? I tried the sony way to unlock several times, all the same result.

frostchill said:
is there away to use flashtool to unlock bootloader too? I tried the sony way to unlock several times, all the same result.
Click to expand...
Click to collapse
NO!
The only way is to follow the instructions on the sony website.
It is very straight forward to do

gregbradley said:
NO!
The only way is to follow the instructions on the sony website.
It is very straight forward to do
Click to expand...
Click to collapse
Installed sdk. Plug the phone in nothing pop up, for me to select the driver folder, is it because I install the flashtool with us driver already?

I hope you back up your TA partition before you unlock your bootloader.
unlocking the bootloader will break your stock camera.
Just a friendly reminder =)

frostchill said:
Installed sdk. Plug the phone in nothing pop up, for me to select the driver folder, is it because I install the flashtool with us driver already?
Click to expand...
Click to collapse
Well uninstall all phone software and drivers and try it again
Sent from my C6903 using xda premium

[Q] stuck on "daemon started successfully"

Hello guy ...
I have a problem with my xperia Z (4.3)
When i run the root.cmd v.(0.17) toolkit then press enter then says "daemon started successfully"
And nothing happen , tried to wait alot but no reponding
What i have done :
1- installing all drivers (all the drivers installed)
2- reinstalling the drivers
3- using another version of the root toolkit
4- changing the pc
5- i am using the original charger (usb from sony to connect the phone to the pc)
6- that happened when i updated my xperia z from (4.2) to (4.3)
7- searched on the internet for this problem and nothing fixed it
wishs that you can help me guys :angel:
thanks

You need to unlock the bootloader to directly root 4.3.
If you don't want to do that or cannot, then you need to downgrade, root and flash a prerooted rom.
Sent from my C6603 using Tapatalk

ahmedsasker said:
Hello guy ...
I have a problem with my xperia Z (4.3)
When i run the root.cmd v.(0.17) toolkit then press enter then says "daemon started successfully"
And nothing happen , tried to wait alot but no reponding
What i have done :
1- installing all drivers (all the drivers installed)
2- reinstalling the drivers
3- using another version of the root toolkit
4- changing the pc
5- i am using the original charger (usb from sony to connect the phone to the pc)
6- that happened when i updated my xperia z from (4.2) to (4.3)
7- searched on the internet for this problem and nothing fixed it
wishs that you can help me guys :angel:
thanks
Click to expand...
Click to collapse
I believe you can't Root 4.3 , you have to root 4.2 then flash a 4.3 pre-rooted zip file.

:*
kingvortex said:
You need to unlock the bootloader to directly root 4.3.
If you don't want to do that or cannot, then you need to downgrade, root and flash a prerooted rom.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
thanks again -_-
the 2 problems have 1 thing to fix it
but when i unlock the bl , wont i get any more updates from Sony ???

thank u
kingvortex said:
You need to unlock the bootloader to directly root 4.3.
If you don't want to do that or cannot, then you need to downgrade, root and flash a prerooted rom.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
defsix said:
I believe you can't Root 4.3 , you have to root 4.2 then flash a 4.3 pre-rooted zip file.
Click to expand...
Click to collapse
thank you !
but the same (Q) : after doing that , wont i get any more updates from Sony?

Not through the usual channels. PC Companion, Sony Update Service or OTA don't work when your bootloader is unlocked. You have to use Sony Emma or the unnoficial Flashtool to update.
Edit - You're welcome.
Sent from my C6603 using Tapatalk

new error
kingvortex said:
Not through the usual channels. PC Companion, Sony Update Service or OTA don't work when your bootloader is unlocked. You have to use Sony Emma or the unnoficial Flashtool to update.
Edit - You're welcome.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
thanks again
now i have a new error : "FAILED <remote: command not allowed>"
tried to search on google to fix this but no solution
can you help me ??? FAILED (writing 'boot'... failed (remote command not allowed))
I installed all the drivers and the same error
that happen when i write in cmd :
Code:
fastboot flash boot boot.img
this file is for the root tried the
1- Z_DooMLoRD_CF-Auto-Root-ported_FW-350
2- Z_DooMLoRD_insecure_FW-350
3- CWM 6 works but cant get into it
4- tried to use another adb
i unlocked bl but after that i losed the rom too so i want to go to cwm to install the custom rom
hope u can help me to fix this
cuz my phone now is like a dead
my father may be upset

You normally only get that error message when your bootloader is still locked.
Did you follow this guide? http://forum.xda-developers.com/showthread.php?t=2153261
The CF auto root kernel you're using is quite old and newer firmware will not boot when it's flashed. This is the kernel I used after I unlocked my bootloader - DooMLoRD's advanced stock kernel
If you're stuck, you can always restore your phone with Flashtool.
www.flashtool.net
Just download a stock FTF from the general section and flash it. That will get your phone booting again.
Edit - Here's a detailed guide on rooting 4.3 - How to root 4.3.
Sent from my C6603 using Tapatalk

omg
kingvortex said:
You normally only get that error message when your bootloader is still locked.
Did you follow this guide? http://forum.xda-developers.com/showthread.php?t=2153261
The CF auto root kernel you're using is quite old and newer firmware will not boot when it's flashed. This is the kernel I used after I unlocked my bootloader - DooMLoRD's advanced stock kernel
If you're stuck, you can always restore your phone with Flashtool.
www.flashtool.net
Just download a stock FTF from the general section and flash it. That will get your phone booting again.
Edit - Here's a detailed guide on rooting 4.3 - How to root 4.3.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
i unlocked my phone
and every thing went ok
and now u say it is not unlocked ! ?

Well, no I didn't say that. I said that error message normally means the bootloader isn't unlocked.
Try installing Flashtool and use the fastboot mode it provides to flash the kernel I linked you to.
Sent from my C6603 using Tapatalk

Done .
kingvortex said:
Well, no I didn't say that. I said that error message normally means the bootloader isn't unlocked.
Try installing Flashtool and use the fastboot mode it provides to flash the kernel I linked you to.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
Done .
now what to do i want to install cwm and a new rom
but lot of thanks man u really helped me
oh ye look at this
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
and flashing karnel with flashtool :
Code:
21/055/2014 22:55:44 - INFO - <- This level is successfully initialized
21/055/2014 22:55:44 - INFO - Flashtool Version 0.9.14.0 built on 12-02-2014 22:45:00
21/055/2014 22:55:44 - INFO - Device connected in fastboot mode
21/055/2014 22:55:45 - INFO - Please connect your device into flashmode.
21/055/2014 22:55:51 - INFO - Device disconnected
21/055/2014 22:55:56 - INFO - Device connected in flash mode
21/055/2014 22:55:57 - INFO - Opening device for R/W
21/056/2014 22:56:17 - INFO - Processing loader.sin
21/056/2014 22:56:17 - INFO - Checking header
21/056/2014 22:56:17 - ERROR -
21/056/2014 22:56:17 - INFO - Your phone bootloader cannot be officially unlocked
21/056/2014 22:56:17 - INFO - You can now unplug and restart your phone
22/013/2014 00:13:15 - INFO - Selected null
22/013/2014 00:13:15 - INFO - Flash canceled
22/013/2014 00:13:29 - INFO - Selected kernel (boot.img or kernel.sin): F:\Users\ahmed\Downloads\Compressed\boot.img
22/013/2014 00:13:29 - INFO - Flashing selected kernel
22/013/2014 00:13:30 - INFO - sending 'boot' (11048 KB)...
22/013/2014 00:13:30 - INFO - OKAY [ 0.427s]
22/013/2014 00:13:30 - INFO - writing 'boot'...
22/013/2014 00:13:30 - INFO - OKAY [ 0.539s]
22/013/2014 00:13:30 - INFO - finished. total time: 0.966s
22/013/2014 00:13:30 - INFO - FASTBOOT Output:
sending 'boot' (11048 KB)...
OKAY [ 0.427s]
writing 'boot'...
OKAY [ 0.539s]
finished. total time: 0.966s
22/013/2014 00:13:30 - INFO - Please check the log before rebooting into system
when i start my phone nothing appear just 1 vibrate and black screan
sorry for my bad eng.

OK, so as the kernel successfully flashed this time, you already have CWM. When the Sony logo appears during boot, there will be a vibration and the notification led will change colour. Press volume + at that point to enter CWM.
Sent from my C6603 using Tapatalk

i broke my phone ??
kingvortex said:
OK, so as the kernel successfully flashed this time, you already have CWM. When the Sony logo appears during boot, there will be a vibration and the notification led will change colour. Press volume + at that point to enter CWM.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
lol i think i broke my sony
man, sony logo doesnt appear at all
what to do now , my Sony is broken now ??? :crying:

Flash a stock FTF with Flashtool. I'm not sure what's going wrong here, as all the methods and tools you're using worked fine for me.
When you get back to a stock working system, just try again.
Sent from my C6603 using Tapatalk

kingvortex said:
Flash a stock FTF with Flashtool. I'm not sure what's going wrong here, as all the methods and tools you're using worked fine for me.
When you get back to a stock working system, just try again.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
doing that now
thanks
wait cuz i may have another error -_-
lol
love u man cant say what i feel i want a big hug
flashing

"(
kingvortex said:
Flash a stock FTF with Flashtool. I'm not sure what's going wrong here, as all the methods and tools you're using worked fine for me.
When you get back to a stock working system, just try again.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
i have another error again when i flash the karnel after flashing the stock rom
Code:
22/038/2014 00:38:31 - INFO - Selected kernel (boot.img or kernel.sin): F:\Users\ahmed\Downloads\Compressed\boot.img
22/038/2014 00:38:31 - INFO - Flashing selected kernel
22/038/2014 00:38:31 - INFO - sending 'boot' (11048 KB)...
22/038/2014 00:38:31 - INFO - OKAY [ 0.415s]
22/038/2014 00:38:31 - INFO - writing 'boot'...
22/038/2014 00:38:31 - INFO - FAILED (remote: Command not allowed)
22/038/2014 00:38:31 - INFO - finished. total time: 0.417s
22/038/2014 00:38:31 - INFO - FASTBOOT Output:
sending 'boot' (11048 KB)...
OKAY [ 0.415s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.417s
22/038/2014 00:38:31 - INFO - Please check the log before rebooting into system
22/038/2014 00:38:42 - INFO - Device disconnected
now what to do ?

Does your phone boot now?
If it does, boot it up ,then enter *#*#7378423#*#* in the dialler, then enter Service Info, then Configuration.
What does it say under 'Rooting status'?
Sent from my C6603 using Tapatalk

?
kingvortex said:
Does your phone boot now?
If it does, boot it up ,then enter *#*#7378423#*#* in the dialler, then enter Service Info, then Configuration.
What does it say under 'Rooting status'?
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
rooting status:
nothing just like that
i know i must root my phone
can u give me the root img ???

It's blank? This is strange. I don't know how to proceed now. Sorry.
Sent from my C6603 using Tapatalk

kingvortex said:
It's blank? This is strange. I don't know how to proceed now. Sorry.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
Bootloader unlock allowed: Yes
what my Sony is not unlocked bl
?
but i show u the cmd it succedded

[Noob]problem with root sony xperia SP 4.3 / V.201

i'm new on this forum or not in android tricks, but I do not understand almost nothing of this phone, xperia sp, I just want to root the phone and install a compatible CWM, already tested to root through the alert sofware, zroot, android ultimate tool box pro , root android exe, root genious and many others.
So I tried other methods presented here in the forum eg the program (DooMLoRD_Easy-Rooting-Toolkit_v17_perf-event-exploit) and appears the error "ADB server is out of date" and (ADB did not hak) when i try without being in the way fastboot, and when i try in fastboot mode whit sony mobile flasher by androxyde, the software show me this ---> (08/059/2014 14:59:45 - INFO - <- This level is successfully initialized
08/059/2014 14:59:45 - INFO - Flashtool Version 0.9.16.0 built on 19-04-2014 19:00:00
08/059/2014 14:59:47 - INFO - Checking if changes have been made to devices folder.
08/059/2014 14:59:55 - INFO - Pulling changes from github
08/059/2014 14:59:55 - INFO - Devices sync finished.
08/059/2014 14:59:56 - INFO - Device connected in fastboot mode
08/002/2014 15:02:53 - INFO - Selected kernel (boot.img or kernel.sin): C:\Flashtool\firmwares\SP_DooMLoRD_AdvStkKernel_FW-266_v01.elf
08/002/2014 15:02:53 - INFO - Flashing selected kernel
08/002/2014 15:02:54 - INFO - sending 'boot' (11009 KB)...
08/002/2014 15:02:54 - INFO - FAILED (remote: The Device must be rooted first)
08/002/2014 15:02:54 - INFO - finished. total time: 0.008s
08/002/2014 15:02:54 - INFO - FASTBOOT Output:
sending 'boot' (11009 KB)...
FAILED (remote: The Device must be rooted first)
finished. total time: 0.008s
08/002/2014 15:02:54 - INFO - Please check the log before rebooting into system)
My version of android is JB 4.3 updated by sony update and the kernel version is 3.4.0-perf-ga1d7493 [email protected]#1 mon Feb 10 17:23:44 2014 compilation Number 12.1.A.1.201. Model Xperia SP C50303
Can anyone help me or have had this error?

You are trying to flash a kernel on a locked bootloader..you can unlock it and flash the kernel but since you are a noob I would suggest you to downgrade back to 4.1 and root your phone using doomlord's method for locked bootloaders and then install a 4.3 custom rom

Don't try to apply things blindly to your phone, hoping for root. Might end up with a brick. . There's no exploit found in newest firmware to root it while in locked bootloader yet. You can go thorough this index to see what it means and other relevant info about our SP: http://forum.xda-developers.com/showthread.php?t=2618222
This is another thread with similar query as yours.. checkout it's replies..
http://forum.xda-developers.com/showthread.php?t=2738106
Happy rooting!
Edit: corrected the link

Can someone please help me as well.. I have an Xperia SP currently running 4.1.2 rooted, bootloader locked.
My aim is to upgrade to 4.3.3 and root, for which i will have to unlock the bootloader. To do so I need a TA partition Backup, for which again, root is required.
So, my question is that is it okay if I take a TA Backup now [in 4.1.2] and then upgrade OTA and unlock bootloader, root and then restore the 4.1.2 TA backup onto 4.3.3 in order to restore DRM keys and Relock the bootloader?
Has anyone done this?
is it safe?
Sent from my C5302 using Tapatalk

Custom ROM

Hi,
i try to install Lollipop on my Z1. A Long Time ago i had cm mod installed, after that stock rom.
i use actually C6903_14.4.A.0.157_Central Europe 1. i want to install cm 12, device downgrade on .108, root and upgrade to .157. unlocking the bootloader via Fastboot and flashtool failed:
04/041/2015 18:41:52 - INFO - FAILED (remote: Command did not succeed)
04/041/2015 18:41:52 - INFO - finished. total time: 0.019s
second time:
04/041/2015 18:41:57 - INFO - FAILED (remote: Device is already rooted)
04/041/2015 18:41:57 - INFO - finished. total time: 0.004s
at servicemenu: Bootloader unlocked allowed: Yes. i think the bootloader is locked, but i can unlock. otherwise i try to install boot.img via fastboot from cm 12.
sending 'boot' (13252 KB)...
OKAY [ 0.461s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.470s
than i tried with Z1-lockeddualrecovery2.8.1 to install crdroid 5.0.2, installation from dualrecovery without problems. after flashing crdroid and direct after Z1-lockeddualrecovery2.8.1-RELEASE.flashable i had a black screen after reboot. when i press the on button there is one time vibration, than nothing. the z1 will not boot or start recovery. i installed via flashtool -> flash mode C6903_14.4.A.0.157_Central Europe 1 stock rom. someone any idea ?
thx

thc2oo2 said:
Hi,
i try to install Lollipop on my Z1. A Long Time ago i had cm mod installed, after that stock rom.
i use actually C6903_14.4.A.0.157_Central Europe 1. i want to install cm 12, device downgrade on .108, root and upgrade to .157. unlocking the bootloader via Fastboot and flashtool failed:
04/041/2015 18:41:52 - INFO - FAILED (remote: Command did not succeed)
04/041/2015 18:41:52 - INFO - finished. total time: 0.019s
second time:
04/041/2015 18:41:57 - INFO - FAILED (remote: Device is already rooted)
04/041/2015 18:41:57 - INFO - finished. total time: 0.004s
at servicemenu: Bootloader unlocked allowed: Yes. i think the bootloader is locked, but i can unlock. otherwise i try to install boot.img via fastboot from cm 12.
sending 'boot' (13252 KB)...
OKAY [ 0.461s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.470s
than i tried with Z1-lockeddualrecovery2.8.1 to install crdroid 5.0.2, installation from dualrecovery without problems. after flashing crdroid and direct after Z1-lockeddualrecovery2.8.1-RELEASE.flashable i had a black screen after reboot. when i press the on button there is one time vibration, than nothing. the z1 will not boot or start recovery. i installed via flashtool -> flash mode C6903_14.4.A.0.157_Central Europe 1 stock rom. someone any idea ?
thx
Click to expand...
Click to collapse
try to boot your device in flashmode
install stock rom

If you failed to install a custom kernel is because you did not have unlocked your bootloader. You need a unlocked bootloader to flash boot.img, otherwise it will fail.
You got a black screen because you have not followed the right steps to install the ROM, some ROM needs to wipe everything (except sdcard) to work properly.

Cant install recovery / can't unlock [Xperia Z]

I Unlocked someones Xperia Z and installed Cyanogenmod and TWRP on it some time ago. It was too unstable for their liking so they reset it to its stock settings using Sony Emma (or whatever its called).
Well now that they've got a nexus 6P, they've given the Xperia Z to me, so i tried to install TWRP and i get errors trying to overwrite the recovery.
Upon inspection of the bootloader lock settings i found it to say "bootloader unlockable: Yes", which indicates it is unlockable but not yet unlocked, and it continues to say this no matter how many times i attempt to unlock it.
Below is a demonstration attempt to unlock the phone and install TWRP:
Code:
[email protected] ~/Desktop $ sudo fastboot oem unlock 0xC431F679A4E1ECEB
...
OKAY [ 0.408s]
finished. total time: 0.408s
[email protected] ~/Desktop $ sudo fastboot erase recovery
erasing 'recovery'...
FAILED (remote: Command not allowed)
finished. total time: 0.002s
[email protected] ~/Desktop $ sudo fastboot flash recovery twrp.img
sending 'recovery' (10656 KB)...
OKAY [ 0.337s]
writing 'recovery'...
FAILED (remote: Command not allowed)
finished. total time: 0.339s
[email protected] ~/Desktop $ sudo fastboot flash boot twrp.img
sending 'boot' (10656 KB)...
OKAY [ 0.337s]
writing 'boot'...
OKAY [ 0.563s]
finished. total time: 0.900s
I've also tried it using flashtool on Windows and similarly it doesn't work.
I can't understand why it would work the first time, but now that its been factory reset the unlock doesn't work.

Have you tried with Xperia z dual recovery? (XZ dual-recovery) . It's very simple to install, for more info please refer to the official thread.

aaronkatrini said:
Have you tried with Xperia z dual recovery? (XZ dual-recovery) . It's very simple to install, for more info please refer to the official thread.
Click to expand...
Click to collapse
To do that i'd need a custom recovery, and i can't install one because the bootloader is locked and there is no recovery present on the device.
EDIT: ah i just saw the install exploit for unrooted devices. I'll give it a shot.

Didn't work unfortunately :/
I wasn't able to to use dual recovery to unlock the phone.
I downloaded and then installed a 10.3.x.x version of a stock xperia Z rom using flashtool, then i ran the dual recovery setup. EVERY operation reported that the file or folder didn't exist,and that the install had failed.
I was able to root the phone using Root Genius. I then installed TWRP manager and tried to install TWRP from there (this worked on that phone before), but it corrupted the rom so now it just freezes and restarts on the boot animation.

Recovering with Emma does not relock the bootloader. So bootloader should still be unlocked. Recovering with Emma also removes root so you need to root your device before you can install a custom recovery.
Sent from my E6653 using XDA-Developers mobile app

You are indeed right! although the problem appeared to be a locked bootloader at first, it now appears it was a corrupted recovery partition.
I, again, set the phone to a stock 10.1.x.x ROM (it was still corrupted from last time so i had to reset it again using Sony Emma) using flashtool and rooted using Root Genius. I then tried to use flashify to install XZ-dual-recovery but it told me the recovery partition was missing.... so i searched around and found the cure to my woes may be DooMKernel, so i set it up, and everything fell into place from there! below is how i believe it worked:
1. Used fastboot on my PC to install DooMKernel v22 as per the official page instructions
2. successfully booted into TWRP
3. used TWRP to install XZ-dual-recovery
4. successfully booted into CWM recovery
5. used CWM recovery to format all internal paritions
6. used CWM to install ROM and root
Thank you everyone for your help!

My xperia z has the 5.1.1 rom and is rooted.
The boot loader is locked and I couldn´t unlock it.
I cannot get into recovery with PC, neither with the buttons.
I like to install a custom 6.0 rom.
any suggestion?
thxs in advance for your support.