1. Kernel upgrade is simple.

  2. Once downloaded and uncar the *.sar files

  3. Stop sap and sap services

  4. Do a backup of the exe folder in our case its
    \usr\sap\sid\dvebmgs00\exe

  5. Then replace the uncar files into exe folder.

  6. Now restart SAP.

  7. If fail, restore back the exe folder

    :D