[Xperia Z2 General] Randagio_85:
Unable to downgrade to 575 kernel version

Hi guys

I'm trying to execute the first step but after flashing the 575 with flashtool the phone remains in 291 version .

It's strange because in the log of the flashtool I cannot see any strange error, but if I check the build number after flashing it still says 23.5.A.1.291

25/003/2016 21:03:01 - INFO - Selected Bundle for Sony Xperia Z2 (D6503). FW release : 23.5.A.0.575. Customization : Customized MEA

25/003/2016 21:03:01 - INFO - Preparing files for flashing

25/003/2016 21:03:02 - INFO - Please connect your device into flashmode.

25/003/2016 21:03:05 - INFO - Device disconnected

25/004/2016 21:04:26 - INFO - Device connected in flash mode

25/004/2016 21:04:27 - INFO - Opening device for R/W

25/004/2016 21:04:27 - INFO - Reading device information

25/004/2016 21:04:27 - INFO - Phone ready for flashmode operations.

25/004/2016 21:04:27 - INFO - Current device : D6503 - BH906HT316 - 1281-1806_R2D - 1278-4770_23.5.A.0.575 - GLOBAL-LTE_23.5.A.1.291

25/004/2016 21:04:27 - INFO - Start Flashing

25/004/2016 21:04:27 - INFO - Processing loader.sin

25/004/2016 21:04:27 - INFO - Checking header

25/004/2016 21:04:27 - INFO - Flashing data

25/004/2016 21:04:27 - INFO - Processing of loader.sin finished.

25/004/2016 21:04:28 - INFO - Loader : S1_Root_9c84 - Version : MSM8974AB_27 / Boot version : S1_Boot_MSM8974AB_LA3.0_M_3 / Bootloader status : ROOTABLE

25/004/2016 21:04:28 - INFO - Disabling final data verification check

25/004/2016 21:04:29 - INFO - No bootdelivery to send

25/004/2016 21:04:29 - INFO - Processing kernel.sin

25/004/2016 21:04:29 - INFO - Checking header

25/004/2016 21:04:29 - INFO - Flashing data

25/004/2016 21:04:29 - INFO - Processing of kernel.sin finished.

25/004/2016 21:04:29 - INFO - Ending flash session

25/004/2016 21:04:29 - INFO - Flashing finished.

25/004/2016 21:04:29 - INFO - Please unplug and start your phone

25/004/2016 21:04:29 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

25/004/2016 21:04:30 - INFO - Device connected in flash mode

25/005/2016 21:05:36 - INFO - Device disconnected

Any idea of what it's happening?

Thanks guys :)

---------- Post added at 09:32 PM ---------- Previous post was at 09:17 PM ----------

The problem appears when I execute the install.bat script. It gives me these errors:

The system cannot find the path specified.

* daemon not running. starting it now on port 5037 *

* daemon started successfully *

Device Detected!

Installing ...

mkdir: '/data/local/tmp/mm_twrp_recovery_install': File exists

cannot stat 'boot_twrp_recovery.sh': No such file or directory

cannot stat 'busybox': No such file or directory

cannot stat 'byeselinux.ko': No such file or directory

cannot stat 'chargemon.sh': No such file or directory

cannot stat 'install_twrp_recovery.sh': No such file or directory

cannot stat 'iovyroot': No such file or directory

cannot stat 'modulecrcpatch': No such file or directory

cannot stat 'recovery.twrp.cpio.lzma': No such file or directory

cannot stat 'wp_mod.ko': No such file or directory

chmod: /data/local/tmp/mm_twrp_recovery_install/busybox: No such file or directory

chmod: /data/local/tmp/mm_twrp_recovery_install/install_twrp_recovery.sh: No such file or directory

chmod: /data/local/tmp/mm_twrp_recovery_install/iovyroot: No such file or directory

chmod: /data/local/tmp/mm_twrp_recovery_install/modulecrcpatch: No such file or directory

/system/bin/sh: /data/local/tmp/mm_twrp_recovery_install/iovyroot: not found

Finished!

Rebooting into TWRP recovery ...

Press any key to continue . . .

And after that the phone reboot but not in recovery mode...

Regards