A. Manually donwload and install the APK from telegram.org/android
B. Clear the Telegram cache, restart the app and try to update again
When trying to update the Android app obtained via Telegram's website (telegram.org/android), the in-app updater fails to install the update and gets stuck.
On unstable mobile data connections, the APK installer of the new version of the app downloaded in-app may fail to install, most likely because the file gets corrupted during download and the app doesn't checks its integrity before asking the user to install.
Steps to reproduce
We don't have exact steps, since the issue is reproduced in a certain scenario where the user has bad connection and the APK download progress gets interrupted
Current result
The update is donwloaded and can be installed without issues
Expected result
It fails to install the APK update and these messages appear: 'There was an error parsing the package', 'The app couldn't be installed'