For testing purposes, it was already possible to force to show the outdated browser notification bar. Either by adding
"#bu-test" to the url in the browser or
test: true to the options passed to the script.
Now, if you pass this, the bar is not only shown always, but it enters debug mode, showing additional information: It clearly states that the browser may not really be outdated since this is testing mode If the notification would be shown normally to this browser Reasons why the bar would be shown (minimum requirements not met, browser insecure, browser not supported by the vendor anymore) Information on the browsers and system (is it insecure? the latest version?, can the device be updated?)