[Sony Cross-Device General] 9600xt:
attempt 5 install failed on z2 lollipop now without rw permission (lost on attempt 3 install yesterday)...

at this time i have root (checked by root checker) but not rw permission (root explorer mount only ro, "mount -o remount,rw rootfs /" gives me operation not permitted), what can i do to recover my rw permission try to install dualrecovery again??

andrea@laptop-andrea:~/Scrivania/lockeddualrecovery$ ./install.sh
[sudo] password for andrea:
[3;J
==============================================
= =
= XZDualRecovery =
= Maintained by [NUT] =
= =
= For many Sony Xperia devices! =
= =
==============================================

Choose an installation option:

1/ Installation on device rooted with SuperSU
2/ Installation on device rooted with SuperUser
3/ Attempt installation on an unrooted device

Q/ Exit

Enter option:

1
[3;J

Adjusting for SuperSU!
* daemon not running. starting it now on port 5037 *
* daemon started successfully *

=============================================
Step1 : Waiting for Device.
=============================================

Succes

=============================================
Device and firmware information:
=============================================
Device model is D6503
Firmware is 23.1.A.0.690

=============================================
Step2 : Sending the recovery files.
=============================================

0 KB/s (30 bytes in 0.063s)
348 KB/s (16570 bytes in 0.046s)
11 KB/s (501 bytes in 0.044s)
272 KB/s (11893 bytes in 0.042s)
3487 KB/s (56834 bytes in 0.015s)
72 KB/s (3082 bytes in 0.041s)
743 KB/s (30148 bytes in 0.039s)
41 KB/s (1693 bytes in 0.040s)
822 KB/s (34473 bytes in 0.040s)
22 KB/s (924 bytes in 0.040s)
299 KB/s (13592 bytes in 0.044s)
8 KB/s (385 bytes in 0.041s)
6787 KB/s (719520 bytes in 0.103s)
4737 KB/s (3417703 bytes in 0.704s)
5180 KB/s (1936425 bytes in 0.365s)
4380 KB/s (2420459 bytes in 0.539s)
235 KB/s (10789 bytes in 0.044s)

=============================================
Step3 : Setup of dual recovery.
=============================================

Look at your device and grant supersu access!
-rwxr-xr-x shell shell 719520 2015-04-10 10:52 busybox
Press any key to continue AFTER granting root access.

##########################################################
#
# Installing XZDR version 2.8.6 RELEASE
#
#####

Temporarily disabling the RIC service, remount rootfs and /system writable to allow installation.
mount: permission denied (are you root?)
Remount of system failed, applying MohammadAG's wp_mod module solution now.
The wp_mod module does not exist, installing it now.
The byeselinux module exists, testing if the kernel accepts it.
byeselinux: applet not found
Copy recovery files to system.
Copy chargemon script to system.
Copy dualrecovery.sh to system.
Copy rickiller.sh to system.
Installing NDRUtils to system.
Copy disableric to system.
Copy busybox to system.
Trying to find and update the gpio-keys event node.
Found and will be using /dev/input/event2!
Trying to find and update the power key event node.
Found and will be monitoring /dev/input/event1!
Speeding up backups.
Make sure firstboot goes to recovery.

=============================================
DEVICE WILL NOW TRY A DATA SAFE REBOOT!
=============================================

=============================================
Your installation has already cleaned up after
itself if you see the install.bat/install.sh exit.
=============================================

=============================================
Installation finished. Enjoy the recoveries!
=============================================