Downloading "repacked" software from unofficial sources carries significant danger. Since Adobe has removed all official download pages , these files are only found on third-party sites.
Users often seek older "repacks" like v12.0.0.77 because they lack the modern kill-switch logic, allowing legacy Flash files (.SWF) to run without being blocked by Adobe's later security measures. Critical Risks and Security
Most versions released after May 2020 include a "time bomb" or kill switch that blocks Flash content from running after January 12, 2021.