[bejobo]

Hi @dr singh

1- Simply go at the root of the device with the file manager; there you should see a directory called Boyue_APK_Launcher (or Boyue_Launcher_APK - please bear with me as I'm writing you this while I do not have the reader with me); in this directory, find a sub-directory bearing a name including a reference to "2020042915",
2- delete the sub-directory,
3- ensure you have sufficient battery power & a good network connection,
4- restart the device; you will be prompted to install the launcher again (the prompt details improvements).
(5- repeat if necessary - I had to due to issues with my network)
hope this helps...