Which story? what do you mean. If YouTube for update info, just do a search and watch one or two for info. Again do a backup before you do any OS updates.
Also generally carriers offer software updates for blackberry cell phones. You do not show a carrier. Add yours and possible someone will suggest where to look.
As an example only this link from T-Mobil has updates for their phones. you need to go to your carrier. https://support.t-mobile.com/docs/DOC-9524