How to upgrade kernel version, crrently I am having Darwin Kernel Version 10.3.0 . need to upgrade to Darwin Kernel Version 10.7.0
Current kernel version is
Darwin macxx.xxxxxx.xxxxxx.com 10.3.0 Darwin Kernel Version 10.3.0: Fri Feb 26 11:58:09 PST 2010; root:xnu-1504.3.12~1/RELEASE_I386 i386
Need to upgrade it to
Darwin Kernel Version 10.7.0
Thanks in advance