Microsoft Is Investigating Error 8018830f That Occurs During Windows Phone 8.1 GDR1 Update

Microsoft started rolling out Windows Phone 8.1 GDR1 update to developer preview users yesterday. While most of us have successfully updated to the new release, some users are experiencing difficulties in the update process. Some users got error 8018830f on update. Joe Belfiore today confirmed on Twitter that they are aware of the issue and investigating to fix it.
If you got this error during update process, you need to wait for few days until Microsoft delivers a fix.