The widespread use of the Android software platform, under the control of which a large number of a wide variety of devices operate - smartphones, tablets, media players, etc., has led to the emergence of a huge number of applications that act as additional components that expand the functionality of the base OS.
Customization
All users who do not want to put up with a certain limitation of Android imposed by device manufacturers turn to the so-called customization - changing individual components of the operating system or expanding its capabilities with the help of additional software packages.
Root Rights
To make serious manipulations with the software part of the "Android" devices, the user will need superuser rights, as well as software that will allow you to manage root rights. One of the most popular superuser rights management solutions is the SuperSU app. It is worth noting that the utility perfectly performs the functionality assigned to it, but sometimes it causes problems, the most common of which is the inability to update the binary SU file. Let's take a closer look at the application itself, and also try to figure it out: if the SU binary file requires updating, what should I do in this case?
SuperSU Program
SuperSU application may appear in the user's device automatically after the procedure for obtaining root-rights. In addition, many developers of custom firmware add to their solutions the already installed SuperSU. If root-rights are obtained, and there is no application for managing them, you can download and install SuperSU from the Google Play Market.
SuperSU Update
Regardless of the method by which SuperSU was received and installed, after its first launch, the user in most cases receives a notification: "The binary SU file needs updating." It is often possible to continue using the program without an update. Nevertheless, it is advisable to follow the recommendations of the developers and perform the procedures according to the prompts of the program when the binary SU file requires updating. Performing the necessary actions is not difficult at all, just click the "Update" button and select the appropriate update mode.
Emerging issues
It would seem that when using the program in question to manage root rights, the user should not have any difficulties. What could be simpler: when the binary binary SU requires updating, update it in three simple steps and continue to use all the advantages that gives full access to the software part of the device.
But, as in many cases with other applications, the uninterrupted operation of SuperSU, unfortunately, is not guaranteed. Very often the following situation arises. After the user receives notifications from the program "binary SU file requires updating", he tries to carry out the procedure in accordance with the prompts on the screen. The procedure is not always successful. Often, after rebooting the device, an error message is received: "The SU binary file needs updating, the installation failed." How to be in this case?
Solution
There are several ways to prevent the above error. Firstly, from the outset, it must be borne in mind that SuperSU must be installed on a clean system that is not "littered" with other applications, especially in our case those that manage superuser rights. Thus, if again and again the SU binary file requires updating, the installation failed and / or other errors occur, the solution may be to reset the device to the factory settings and repeat the procedure for obtaining root rights, as well as installing SuperSU again.
The second thing that the user should remember is attentiveness and unhurriedness during the update procedure. When you receive a notification that the SU binary file needs updating, you should first try to update it in normal mode. At the same time, one should not forget about the need for a Wi-Fi Internet connection on the device (a connection via a mobile network is not suitable in this case). That is, after clicking on the "Update" button in the SuperSU program window, select "Normal". Then wait for the necessary data to download from the Global Network and the application is finished manipulating, and after that, exit SuperSU and reboot the device.
In the case where the previous methods did not bring results and the SU binary file, which has already gotten bored, needs to be updated again, you will have to resort to the method of installing / reinstalling SuperSU through the modified "Android" recovery. The most commonly used are TWRP or CWM recovery. To forget about SuperSU problems forever, we download a zip package from the Web containing application files and install the resulting file through custom recovery. Such a cardinal method of resolving the issue helps in most cases.
If the above methods do not help to solve problems with SuperSU, the user needs to think about the correspondence of the firmware files and / or its components of the “Android” device used by him. Very often, the cause of many problems is precisely inappropriate or damaged installation files, especially if they were obtained from untrusted sources.