https://community.sony.com.mk/t5/xperia-archive/fail-to-verify-update-database/m-p/3319750#M445432 You may try formatting your phone using factory reset. Don't forget to take a backup of your important data as you are going to loose it. If still you can't upgrade then use PC companion.<BR /><BR />But my was a different issue i used to get a different error. Could not install. Mon, 02 Feb 2015 06:24:45 GMT Sachin4u 2015-02-02T06:24:45Z https://community.sony.com.mk/t5/xperia-archive/fail-to-verify-update-database/m-p/3319748#M445430 I download latest update from the update center in Xperia T3, yesterday. After that, verifying failed everytime i tried. I heard that it also occured in Z series. What's the problem? Hope to well soon...<BR /><BR />Thanks Sat, 10 Jan 2015 00:46:05 GMT https://community.sony.com.mk/t5/xperia-archive/fail-to-verify-update-database/m-p/3319748#M445430 kwa 2015-01-10T00:46:05Z https://community.sony.com.mk/t5/xperia-archive/fail-to-verify-update-database/m-p/3319749#M445431 Reinstall the update with Sony PC Companion.<BR /><A href="http://support.sonymobile.com/us/tools/pc-companion/" target="_blank" rel="nofollow noopener noreferrer">http://support.sonymobile.com/us/tools/pc-companion/</A> Sat, 10 Jan 2015 09:07:44 GMT https://community.sony.com.mk/t5/xperia-archive/fail-to-verify-update-database/m-p/3319749#M445431 Phy 2015-01-10T09:07:44Z https://community.sony.com.mk/t5/xperia-archive/fail-to-verify-update-database/m-p/3319750#M445432 You may try formatting your phone using factory reset. Don't forget to take a backup of your important data as you are going to loose it. If still you can't upgrade then use PC companion.<BR /><BR />But my was a different issue i used to get a different error. Could not install. Mon, 02 Feb 2015 06:24:45 GMT https://community.sony.com.mk/t5/xperia-archive/fail-to-verify-update-database/m-p/3319750#M445432 Sachin4u 2015-02-02T06:24:45Z