Selenium 2.41.0 supports FF 28 and 27 and ESR 17 and 24.
Firefox support is the latest version, previous version, latest version of ESR and previous version of ESR.
For example, Selenium 2.40.0 (released February 19, 2014) supports Firefox 27, 26, 24, 17
Selenium with Firefox can be run on any platform supported by Firefox for these versions, which also allows users to install the custom Firefox extension.
Link: Platform Supported by Selenium
Vaibhav Jain Jul 23 '14 at 9:33 2014-07-23 09:33
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