Solution
To try to fix this we must take into account one very important thing, which is that we cannot manually install a version with a ROM different from that of our mobile. MIUI has different ROMs and in Spain the most common is the global ROM, so if we try to put a different one this error will appear.
En algunos casos este error aparece sin haber tratado de instalarla manualmente y llega vía OTA. Si es tu situación, solamente tienes que reiniciar el móvil y volverlo a encender para repetir los pasos y entrar en Ajustes > Actualizaciones del sistema y aplicarla
The update stays thinking and is not completed
The moment we try to do an update and the mobile tries to download it but it never ends, the problem is preventing us from running it. An error that can appear on all mobile phones, although above all it appears on those who have more time and have already received some updates before. The cause of this is usually that we have no storage memory left.
Solution
As you can imagine, we have to try to clean up the file system so that the update has enough space to download and install. The fastest thing is to use Google files file Manager that will give us tips to avoid this memory problem with large and repeated files.
I'm so happy I learned how to use a computer keyboard in school because Lord.
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In case the problem continues to repeat, we need to think about making a hard reset in the system to clean it from previous updates and junk files that have been hosted, a solution that we will detail later with other related problems.
Unexpected shutdown on Android updates
When the time comes to update our mobile, we have to make use of the update wizard found in the system settings. From it the necessary file is downloaded to download the update and install it, although in the event of the dreaded forced shutdown that many have had to suffer, there is a quick and effective solution.
Solution
Lo único que tenemos que hacer es realizar un borrado de caché del asistente de actualización que está presente en todos los móviles Android. Por algún motivo se produce un problema que vamos a solucionar entrando en Ajustes > Aplicaciones > Aplicación del sistema y buscando «Update» para acceder al configurador y borrar la memoria caché del mismo.
Download the update does not start on Android
Without being a problem that causes us any errors in the mobile, a failure that appears several times when trying to make an update is the mobile phone that prevents us from even starting with the download. Sometimes a message appears that tells us error when downloading the update and at other times nothing appears, which depends on the smartphone and the system.
Solution
Most likely the servers have fallen and therefore little we can do. The manufacturer or Google itself will be responsible for retrieving the files to provide us with the update as soon as possible. This usually does not take longer than 24 hours, so it will be a matter of testing later.
Mobile does not complete Android update
Another problem that may appear on your mobile when you try to complete the update arises at the moment our smartphone restarts to apply all the changes to the system, which is interrupted by an error that does not allow us to move forward and continue the process. This error is repeated as many times as it takes, while we try to upgrade the Android mobile without success.
Solution
We Don't have to worry about this problem anymore if we opt for a hard reset that returns the smartphone to the original state. There may be damaged parts of the system that are causing an unexpected error that prevents completion of the update. To carry out this process, we will have to follow these steps, although first we will have to take all the photos and files that we do not want to lose, since everything will be deleted forever.
When the hard reset is complete, we have to turn on the mobile and make the most basic steps in order to start the update that will be done without errors this time. From that moment on, we can reinstall our apps, add the files and do everything we need on our mobile.
You can also try to update your mobile without Wi-Fi.