I uploaded a custom header, but the old header image displays on some pages
If you uploaded a custom header or changed your custom header image, you may still see the old image on pages. Web browsers cache some content to increase performance, so your old image may continue to display until you restart your browser or refresh your cache.
To refresh your browser's cache on a page, just use the CTRL-F5 key sequence. This will refresh the page and also clear any cached content. You should see any updated images thereafter.