Hi
RoystoysThank you for your reply. Kindly try some stay-at-home troubleshooting tips below if you could not get the notification
1. Make sure the file is downloaded completely, you can try download from PC and put the file into the root directory, aka the outermost place, of the internal storage via USB cable.
2. Detach the USB cable after you put the file into the phone
3. Also, please try "the Factory Reset"
Settings>System>Reset options>Erase all data(factory reset)
Please note that once the Factory Reset is completed, all data, apps, settings and personal information will be deleted.