New update has been found: 4.8 on old clients

[APlusHacking]

I am using Impact client with Optifine on a HP pavilion PC running windows 11. Whenever I first enter Impact I get a message saying new update available, but download new update link is fake and clicking Skip this Version will crash the client Please release a version without the verifying updated version

[a-a-afk]

U hardly gave any info.