How to Update SDK version(1.24.1) in Eclipse

Hi Experts,

Currently my eclipse SDK version is 1.20.9 and in ECC the demokit version is 1.24.4.

when i'm trying to share my project using SAP Repository Team its asking for update your Demokit version.

I tried to update my Eclipse version but its showing that no update is found, how can i update my SDK version in Eclipse?

any suggestion can accept...

Regards,

Santhosh