[Xperia Z Q&A, Help & Troubleshooting] deadrising:
Hey All,

So today I've tried rooting the .253 by downgrading my firmware back to .434 but for some reason it just doesn't work I've inserted the log from the terminal and the log from Flash Tool (Latest Release), I'm running Linux Mint 14 xfce (Running Flash Tool as root of course) I took a risk by unplugging the device after 25 minutes and luckily it still works no brick :) so I'm happy but I'm a little stuck on how to actually get it to work because I had the same problem with it not downgrading on windows which I was stuck on because thats how I flashed the .253 firmware :S

Terminal Log

JAVA_HOME not set. Using default value : ./x10flasher_lib/linjre32
Error parsing gtk-icon-sizes string: ''

(java:17516): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running

(java:17516): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running

(java:17516): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running

(java:17516): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running

(java:17516): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running

(java:17516): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running

(java:17516): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running

(java:17516): GConf-WARNING **: Client failed to connect to the D-BUS daemon:
Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
GConf Error: No D-BUS daemon running

libusb_bulk_transfer (write) : No device
Error : did not write all data
libusb_bulk_transfer (write) : No device
Error : did not write all data
libusb_bulk_transfer (write) : No device
Error : did not write all data
libusb_bulk_transfer (write) : No device
Error : did not write all data
libusb_bulk_transfer (write) : No device
Error : did not write all data
libusb_bulk_transfer (write) : No device
Error : did not write all data
libusb_bulk_transfer (write) : No device
Error : did not write all data
libusb_bulk_transfer (write) : No device
Error : did not write all data
libusb_bulk_transfer (write) : No device
Error : did not write all data
libusb_bulk_transfer (read) : No device
flashsystem.X10FlashException: S1 Header checksum Error
at flashsystem.S1Packet.<init>(S1Packet.java:55)
at flashsystem.io.USBFlashLinux.linuxReadS1Reply(USBFlashLinux.java:53)
at flashsystem.io.USBFlash.readS1Reply(USBFlash.java:50)
at flashsystem.io.USBFlash.writeS1(USBFlash.java:33)
at flashsystem.Command.writeCommand(Command.java:123)
at flashsystem.Command.send(Command.java:140)
at flashsystem.X10flash.uploadImage(X10flash.java:215)
at flashsystem.X10flash.sendLoader(X10flash.java:272)
at flashsystem.X10flash.flashDevice(X10flash.java:355)
at gui.FlasherGUI$56.run(FlasherGUI.java:1397)
at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:40)
at java.security.AccessController.doPrivileged(Native Method)
at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:36)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:199)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:182)
at java.lang.Thread.run(Thread.java:722)
flashsystem.X10FlashException: Cannot read from device
at flashsystem.Command.writeCommand(Command.java:129)
at flashsystem.Command.send(Command.java:140)
at flashsystem.X10flash.uploadImage(X10flash.java:215)
at flashsystem.X10flash.sendLoader(X10flash.java:272)
at flashsystem.X10flash.flashDevice(X10flash.java:355)
at gui.FlasherGUI$56.run(FlasherGUI.java:1397)
at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:40)
at java.security.AccessController.doPrivileged(Native Method)
at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:36)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:199)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:182)
at java.lang.Thread.run(Thread.java:722)
flashsystem.X10FlashException: Cannot read from device
at flashsystem.X10flash.uploadImage(X10flash.java:222)
at flashsystem.X10flash.sendLoader(X10flash.java:272)
at flashsystem.X10flash.flashDevice(X10flash.java:355)
at gui.FlasherGUI$56.run(FlasherGUI.java:1397)
at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:40)
at java.security.AccessController.doPrivileged(Native Method)
at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:36)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:199)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:182)
at java.lang.Thread.run(Thread.java:722)
libusb_bulk_transfer (write) : No device
Error : did not write all data
libusb_bulk_transfer (read) : No device
flashsystem.X10FlashException: S1 Header checksum Error
at flashsystem.S1Packet.<init>(S1Packet.java:55)
at flashsystem.io.USBFlashLinux.linuxReadS1Reply(USBFlashLinux.java:53)
at flashsystem.io.USBFlash.readS1Reply(USBFlash.java:50)
at flashsystem.io.USBFlash.writeS1(USBFlash.java:33)
at flashsystem.Command.writeCommand(Command.java:123)
at flashsystem.Command.send(Command.java:140)
at flashsystem.X10flash.endSession(X10flash.java:398)
at flashsystem.X10flash.closeDevice(X10flash.java:408)
at flashsystem.X10flash.flashDevice(X10flash.java:373)
at gui.FlasherGUI$56.run(FlasherGUI.java:1397)
at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:40)
at java.security.AccessController.doPrivileged(Native Method)
at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:36)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:199)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:182)
at java.lang.Thread.run(Thread.java:722)
release_interface : No device
release_interface : No device

Flash Tool Log

23/054/2013 08:54:04 - INFO - <- This level is successfully initialized
23/054/2013 08:54:04 - INFO - Flashtool Version 0.9.10.1 built on 2013-01-09 22:29:21
23/054/2013 08:54:04 - INFO - You can drag and drop ftf files here to start flashing them
23/054/2013 08:54:08 - INFO - Device disconnected
23/054/2013 08:54:13 - INFO - List of connected devices (Device Id) :
23/054/2013 08:54:13 - INFO - List of ADB devices :
23/054/2013 08:54:13 - INFO - - none
23/054/2013 08:54:13 - INFO - List of fastboot devices :
23/054/2013 08:54:13 - INFO - - none
23/003/2013 09:03:28 - INFO - Flash canceled
23/004/2013 09:04:00 - INFO - Selected Xperia Z_10.1.A.1.434_Generic_WORLD.ftf
23/004/2013 09:04:00 - INFO - Preparing files for flashing
23/005/2013 09:05:32 - INFO - Please connect your device into flashmode.
23/005/2013 09:05:42 - INFO - Device connected in flash mode
23/005/2013 09:05:42 - INFO - Opening device for R/W
23/005/2013 09:05:42 - INFO - Device ready for R/W.
23/005/2013 09:05:42 - INFO - Reading device information
23/005/2013 09:05:43 - INFO - Phone ready for flashmode operations.
23/005/2013 09:05:43 - INFO - Current device : C6603 - CB5A1PQBU0 - 1270-4986_R7A - 1269-5309_10.1.1.A.1.253 - GLOBAL-LTE_10.1.1.A.1.253
23/005/2013 09:05:43 - INFO - Start Flashing
23/005/2013 09:05:43 - INFO - Processing loader
23/005/2013 09:05:43 - INFO - Checking header
23/005/2013 09:05:43 - INFO - Flashing data
23/023/2013 09:23:51 - INFO - Ending flash session <--- This is were I disconnected the device after 25 mins of waiting
23/023/2013 09:23:51 - ERROR - Cannot read from device
23/023/2013 09:23:51 - ERROR - Error flashing. Aborted
23/023/2013 09:23:52 - INFO - Device disconnected
23/025/2013 09:25:24 - INFO - Selected Xperia Z_10.1.A.1.434_Generic_WORLD.ftf
23/025/2013 09:25:24 - INFO - Preparing files for flashing
23/026/2013 09:26:48 - INFO - Please connect your device into flashmode.
23/027/2013 09:27:32 - INFO - Device connected in flash mode <--- This is me trying it again ...
23/027/2013 09:27:33 - INFO - Opening device for R/W
23/027/2013 09:27:33 - INFO - Device ready for R/W.http://xdaforums.com/showthread.php?p=41741577#
23/027/2013 09:27:33 - INFO - Reading device information
23/027/2013 09:27:33 - INFO - Phone ready for flashmode operations.
23/027/2013 09:27:33 - INFO - Current device : C6603 - CB5A1PQBU0 - 1270-4986_R7A - 1269-5309_10.1.1.A.1.253 - GLOBAL-LTE_10.1.1.A.1.253
23/027/2013 09:27:33 - INFO - Start Flashing
23/027/2013 09:27:33 - INFO - Processing loader
23/027/2013 09:27:33 - INFO - Checking header
23/027/2013 09:27:33 - INFO - Flashing data <--- And this is me just giving up ... (got to get to work so :()