https://community.sony.rs/t5/m-series/restore-to-old-os/m-p/3516467#M16727 <P>Hi&nbsp;<A href="https://community.sony.co.uk/t5/user/viewprofilepage/user-id/869857">@Elmasnekk</A>,<BR /><BR />We do not have an official way for you to revert to an old software build, therefore I am not able to assist you in this.&nbsp;</P> Tue, 11 Oct 2016 13:26:28 GMT Emir1 2016-10-11T13:26:28Z https://community.sony.rs/t5/m-series/restore-to-old-os/m-p/3516466#M16726 <P>I want to restore older Android Versjon.&nbsp;&nbsp;Installed is now &nbsp;6.01 but i need go back to older OS. Not possible with system restore to fabric. Os is not changing.</P> Tue, 11 Oct 2016 13:03:53 GMT https://community.sony.rs/t5/m-series/restore-to-old-os/m-p/3516466#M16726 Elmasnekk 2016-10-11T13:03:53Z https://community.sony.rs/t5/m-series/restore-to-old-os/m-p/3516467#M16727 <P>Hi&nbsp;<A href="https://community.sony.co.uk/t5/user/viewprofilepage/user-id/869857">@Elmasnekk</A>,<BR /><BR />We do not have an official way for you to revert to an old software build, therefore I am not able to assist you in this.&nbsp;</P> Tue, 11 Oct 2016 13:26:28 GMT https://community.sony.rs/t5/m-series/restore-to-old-os/m-p/3516467#M16727 Emir1 2016-10-11T13:26:28Z https://community.sony.rs/t5/m-series/restore-to-old-os/m-p/3516468#M16728 <P>You can use either Xperifirm or Flashtool&nbsp;</P> Tue, 11 Oct 2016 15:19:52 GMT https://community.sony.rs/t5/m-series/restore-to-old-os/m-p/3516468#M16728 Uliwooly 2016-10-11T15:19:52Z