To benefit from the fixes and improvements in update 1.4.25, follow these simple steps:
If you are using a legitimate copy and experiencing technical problems, try these community-verified fixes: Patch 25.19 Notes - League of Legends sleeping dogs crack fix update 1 4 25 link
Addressed various crashes and "black screen" errors that occurred during the initial loading phase. Identifying Your Game Version To benefit from the fixes and improvements in update 1