https://community.sony.com.mk/t5/xperia-archive/z1-vibrator-error/m-p/3381050#M482477 my z1 (and some case on google i have searched )show some error on vibrator (have some zzz sound when vib). When i used the last version of androd it's fix. And on 13/4 we have new version of android 5.0 i updated and the error with vibrator come again :(( what can i do to downgrade <IMG class="lia-deferred-image lia-image-emoji" src="https://community.sony.com.mk/html/images/smilies/035.png" alt="Slightly_frowning_Face" title="Slightly_frowning_Face" /> Fri, 01 May 2015 10:26:12 GMT bobo12 2015-05-01T10:26:12Z https://community.sony.com.mk/t5/xperia-archive/z1-vibrator-error/m-p/3381050#M482477 my z1 (and some case on google i have searched )show some error on vibrator (have some zzz sound when vib). When i used the last version of androd it's fix. And on 13/4 we have new version of android 5.0 i updated and the error with vibrator come again :(( what can i do to downgrade <IMG class="lia-deferred-image lia-image-emoji" src="https://community.sony.com.mk/html/images/smilies/035.png" alt="Slightly_frowning_Face" title="Slightly_frowning_Face" /> Fri, 01 May 2015 10:26:12 GMT https://community.sony.com.mk/t5/xperia-archive/z1-vibrator-error/m-p/3381050#M482477 bobo12 2015-05-01T10:26:12Z https://community.sony.com.mk/t5/xperia-archive/z1-vibrator-error/m-p/3381051#M482478 That's a hardware issue, contact Sony Xperia support.<BR /><A href="http://support.sonymobile.com/global-en/contactUs/" target="_blank" rel="nofollow noopener noreferrer">http://support.sonymobile.com/global-en/contactUs/</A> Fri, 01 May 2015 15:28:25 GMT https://community.sony.com.mk/t5/xperia-archive/z1-vibrator-error/m-p/3381051#M482478 Phy 2015-05-01T15:28:25Z