Updating from 4.1 to 4.1.1 fails after submitting FTP credentials – returns blank page

Overview

When updating WordPress from 4.1 to 4.1.1, after inputting FTP information, WordPress returns a blank page.

Cause

WordPress 4.1 is shipped with a bug in its update module that prevents sending version information when looking for an available update through WordPress’ servers. (cf. ticket #31378)

Solution

WordPress has included, temporarily, a second Update Now button. This button includes version information necessary to update WordPress. Click the second Update Now button.

WordPress 4.1 -> 4.1.1 bug workaround

WordPress 4.1 -> 4.1.1 bug workaround

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