Mac OS:
sudo bash -c 'echo RTMFPP2PDisable=1 >> /Library/Application\ Support/Macromedia/mms.cfg'
Windows:
echo RTMFPP2PDisable=1 >> %windir%\system32\Macromed\Flash\mms.cfg
echo RTMFPP2PDisable=1 >> %windir%\syswow64\Macromed\Flash\mms.cfg
echo RTMFPP2PDisable=1 >> %windir%\system32\mms.cfg
Linux:
sudo mkdir -p /etc/adobe
sudo cat "RTMFPP2PDisable=1" > /etc/adobe/mms.cfg
Chrome:
mkdir "%USERPROFILE%\AppData\Local\Google\Chrome\User Data\Default\Pepper Data\Shockwave Flash\System"
echo RTMFPP2PDisable=1 >> "%USERPROFILE%\AppData\Local\Google\Chrome\User Data\Default\Pepper Data\Shockwave Flash\System\mms.cfg"