Jasminder Singh, you're the man, thank you so much buddy, it's very good and useful tutorial. Once again, thanks !!
Thank You! Yeah its very new and fast method discovered by me. hope it helps. Let me know if anyone facing problem.
A little suggest, better we backup our wp-content folder because in that folder we have our theme(s), plugin(s), image(s), etc, so if we replace the old wp-content with the new one we'll lose all of them. The good idea maybe like this: after we update all WP files we can replace the wp-content with the one we backed up before or maybe when we update WP files, we can choose to not replace the old wp-content folder. Please correct if wrong.
When we will replace the old files with new files only wordpress files will be replace, None of the themes, plugins will be deleted.
Is that true?? oh I've just know about this. So if I do exactly like you did I won't lose my (edited) theme and plugin ?? Ohh that's great, very great. Thanks a lot Jasminder.