Unfortunately, no matter how the developers of mobile "operating systems" try to improve them, the new versions in the pursuit of rating look quite raw. In particular, when switching to Android 5.0 OS, many owners faced a rather serious problem when the system itself, when installing the application from the same Play Market, displays a message with the code 505 “Error” (moreover, unknown). What to do in this case?
Code 505: Android 5.0 operating system error?
Naturally, all owners of mobile equipment with the Android operating system version 5.0 on board immediately strive to write off all the shortcomings to the "OS" itself, they say, it has not been fully finalized. But is it?
Indeed, there are some problems with the system. But they most often relate to the health of already installed applications and their updates. As for newly installed software products, there are no problems.
In what cases does an unknown error 505 occur?
The situation with the appearance of such failures, of course, will not please anyone. Let's try to deal with the case when exactly and why the 505 error occurs. What does this mean? It’s just that the system does not recognize the so-called “self-signed” applications during installation. In other words, she does not trust not only the source, but also the developer’s signature itself, believing that it is either potentially dangerous or undesirable, or because it simply won’t work in this environment (although this is not so) .
And the saddest thing is that not all developers of software for Android systems monitor the creation of updates to their own software products in connection with the release of new versions of the OS. In particular, this concerns developments like the GPS Antiradar or HUD Speed.
In addition, for some reason, the largest number of failures of this kind is observed on Nexus 7 tablets . But you can’t complain about the "OS" here, because the devices themselves, according to the creators, are imperfect and often simply "hang" for no apparent reason.
The simplest fix methods
So, we take into account the situation that the failure did occur, and a message with the code 505 appeared on the screen of the gadget. The error is fixed quite simply.
To begin with, if any old application does not work, you just need to completely remove it. Note that the standard scheme for uninstalling a program by simply dragging the icon to the "Trash" does not always help. After that, you need to clean the system using utilities like CCleaner for the presence of residual records. But that is not all. The fact is that some applications create hidden cache folders that are not deleted at all during uninstallation (for example, the VKontakte client or the FL Studio Mobile music sequencer).
In the case of reinstallation, there is a link to existing files, which are determined by the installer as obsolete versions that cause a conflict. At the same time, unlike the same versions of Windows, the Android system does not give permission to replace them. So it turns out that the application seems to be updated, and the cache is old.
But back to the moment when error 505 occurs. How to fix it in the simplest way?
First you need to enable debugging via USB in the gadget settings. In the information about the device, you need to obtain the developer’s rights by "tapping" 7 times on the line of the version of the system assembly (if there are root superuser rights, it is even better).
Now we connect the device to the computer via USB, after installing the Android Debug Bridge utility. Now run the Run.bat file, which is located in the ADB folder (no matter where it is located on the computer's hard drive), after which the successful execution of the commands contained in it should be displayed on the screen. This will be a confirmation message: Success. Now you can launch and install new applications without any problems.
In some cases, the problem may be related to developers, or rather, development tools. Then a message appears with code 505. The error in this case is eliminated by creating the installation APK-file, not the 15th version of Adobe Air, but the 14th. In most cases, this fixes all problems with the subsequent installation of applications from Google Play (Play Market).
Conclusion
As you can see, a problem unknown error, as the system reports, is generally recognized without any special problems and can be eliminated quite simply. In this case, the main factor is the use of specialized software and the inclusion of developer mode.
As for the creators of applications for Android 5.0, the development environment of Adobe Air 15th version is also imperfect and that is why it can cause conflicts. As already understood, there is a solution to the problem.