The emergence of a new firmware update for the Sony Xperia Z and Xperia ZL . Update, along hours, was also extended to Sony Xperia ZR . Similarly, we told that the new firmware build number one 0.3.1.A.0.244 brought with it the unpleasant surprise remove permissions root the device. Fortunately, the solution is not even 24 hours has been slow in coming to the Sony Xperia Z and is expected in the next few hours it does also for the other models.
As detailed by resources , just hours after the arrival of the new firmware for the Sony Xperia Z and Xperia ZL , the Japanese firm did also reach the Xperia ZR , which originally appeared in Norway upgrade to go later extended to other regions and territories.
Root loss was that the new firmware released by Sony patched the exploit perf_event, used by the Android scene to get root on more than thirty Japanese company devices.
Again, the solution has come from the hand of the same user of xda-developers warned us of the risk of installing the new update. The method to retrieve the rooteo in the Sony Xperia Z without losing the opportunity of having the new update of its Android 4.2.2 Jellybean is to use a kernel – or operating system kernel – formerly in the exploit work mentioned above and, once again achieved root permissions, reinstalled the latest version of the kernel.
Before getting down to work, we want to stress again that this type of action do them under your responsibility. Similarly, we remind you that this procedure and files are only valid for the Sony Xperia Z as both as the Xperia Xperia ZR ZL used similar methods, but their corresponding kernel.
To return to our root device permits previously had need, among other things, FlashTool , the old kernel , the tool to carry out the rooteo and the new kernel .
1 After downloading the two kernel and tool for rooteo, flasheamos open FlashTool and the old version of the kernel.
2 With this action is complete, reboot the device in USB Debugging mode.
3 It is especially important to close FlashTool at this point.
4 Unzip the tools for rooteo previously downloaded to the root directory of the computer – c: \, for example -.
5 Run runme_ file for the operating system from which you are working, which run the tool to perform the rooteo.
6 The device will reboot. After that we can see that we have root permissions to one of the many applications that inform us – SuperSU, for example -.
7 Our next step is to turn the smartphone and reopen the FlashTool, with which flashearemos now the new kernel version, if you recall, and downloaded at the beginning of the process.
8 As you finish flashing and disconnect your Sony Xperia Z and turn it with the latest firmware version and keeping the root permissions.