There is low disk space on my mobile and I want to delete this Update.APP file as you can se this file is taking 2.55 GB!!. I tried to delete it but it shows error "Error while deleting the file "UPDATE.APP". " P.S I am using EMUI version 4.0 & Android version 6.0
You can use some good file explorer like ES File Explorer and then try to delete the file, if direct deletion doesn't work then try renaming the file, then delete it. If that doesn't work then plug your phone into your computer and delete it from there. If nothing works then you might need root access to delete it.