osx - Downgrade Safari webdriver extension version to 2.38 -

there known issue safari webdrier extension version 2.45 working protractor (found here), need downgrade 2.38 work protractor tests, idea how can this?

i managed locate 2.38 extension .jar file (found here), extracted jar file , located .safariextz file when installed using installed 2.45 anyway instead of 2.38

i new mac that's why don't know, cant seem find downgrading safari extensions