Error : org.openqa.selenium.firefox.NotConnectedException

[kezhan]

When trying to connect to remote server with the following code, I got an error.

remDr$open()
[1] "Connecting to remote server"
Error:   Summary: UnknownError
     Detail: An unknown server-side error occurred while processing the command.
     class: org.openqa.selenium.firefox.NotConnectedException

This issue is already discussed here: #44

I checked my firefox version: 47.0.1
And selemium server version: 2.53.0

Then I found this information: http://stackoverflow.com/questions/37693106/selenium-2-53-not-working-on-firefox-47

Selenium WebDriver 2.53.1 has been released on 30th June 2016. FirefoxDriver is working again with Firefox 47.0.1 as browser.

So I tried to update the selenium server

checkForServer(update = TRUE)
[1] "DOWNLOADING STANDALONE SELENIUM SERVER. THIS MAY TAKE SEVERAL MINUTES"
trying URL 'http://selenium-release.storage.googleapis.com/2.53/selenium-server-standalone-2.53.0.jar'
Content type 'application/java-archive' length 21231089 bytes (20.2 MB)

I can't update the selenium server to 2.53.1 but only to 2.53.0.
How could I choose the right version to update?