From this hack you will learn to change your existing blogger/blogspot url to new blogger/blogspot url.
Note : If you change your existing blog url all incoming links will become dead. People may have linked to your blog that may become dead link. So be careful if your blog is on the web for long time, because search engines may have indexed your pages and also your blog posts might have good pageranks.
+/- Step needs to change existing URL of your blogger/blogspot blog
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2. Go to Settings >> Publishing
3. Enter New URL in box as shown in following fig.
4. Enter corresponding Word Verification code. Don’t forget to “SAVE SETTINGS“