When try to call 'install_app' method, i got error ' Method has not yet been implemented'

Basically Im trying to test and ios app update on real device. Im trying to use install_app, but i keep getting the error
Selenium::WebDriver::Error::UnknownError: Method has not yet been implemented from /Users/julia/.rvm/gems/ruby-2.3.1/gems/selenium-webdriver-2.53.4/lib/selenium/webdriver/remote/response.rb:70:inassert_ok’``

The path file is correct

more details here https://github.com/appium/appium/issues/6659