How to access Beta
From your Steam ‘LIBRARY’ list, right-click on Resident Evil 4 / Biohazard 4 and select 'Properties'
Select the ‘BETAS’ tab.
Type RE4BETAoptin (case-sensitive) in the 'Enter beta access code' field and then click CHECK CODE.
Now, select "beta-public – 1.0.1" from the pull-down menu and click CLOSE.
Wait for the Steam client to finish downloading the 3.4MB patch
Launch Resident Evil 4 / Biohazard 4 and verify that 1.0.1 is visible on the bottom right section of the ‘Press any key’ title screen.