From the Flash Player with Google Chrome KB article:
How can I run the system plug-in, debugger or alternate versions of
Flash Player in Google Chrome?
Developers using Google Chrome can download and install a separate
debugger or prerelease version of Flash Player as a system plug-in.
Advanced users wanting to install a new version of Flash Player before
they receive an automatic update through Chrome can install and use a
separate system plug-in.
However, Adobe recommends that non-developer Chrome users use Flash
Player integrated with their browser. Using manually installed
versions of Flash Player, by following the steps below, means that
users no longer benefit from the automatic Flash Player updates that
To install and use an alternate version of Flash Player:
- Download and install the appropriate system plug-in. This plug-in could be a debugger, prerelease, or release version of Flash Player.
(Archived release versions of the system plug-in are found here.)
- Type “about:plugins” (without quotation marks) into the address bar at the top of a Chrome browser window.
- Click “Details” at the upper-right corner of the page.
- Find the “Flash” (or “Shockwave Flash”) listing for the integrated plug-in on the page and click the corresponding “Disable” button. To
identify the integrated plug-in, see the table of plug-in filenames
- Find the “Flash” (or “Shockwave Flash”) listing for the system plug-in on the page and click the corresponding “Enable” button. To
identify the system plug-in, see the table of plug-in filenames below.
- Close all Chrome windows and restart the browser.
Chrome uses the installed system plug-in. To confirm the version of
Flash Player that is currently running in your browser, see Find Flash
Player version (tn_15507).
Table of plugin names:
Platform Integrated Plug-in System Plug-in
-------- ------------------------ -------------------
Windows pepflashplayer.dll NPSWF32.dll
Mac OS PepperFlashPlayer.plugin Flash Player.plugin
Linux libpepflashplayer.so libflashplayer.so