Unable to do software upgrade on Iphone 7 Plus even though there is enough storage

Hello everyone,

I've been trying to do a software upgrade on my Iphone7plus but nothing seems to work :( I've reset it, deleted apps so there is enough space, but I keep getting the "Unable to Install Update message- An error ocurred installling iOs 14.6" over and over again.

Any advice would be much appreciated.

Many thanks,

Kind regards,

Irina