1. AC Question's Avatar
    My Xperia Z1 indicated Lollipop update available to 5.1, but having set it in motion yesterday, a day later and I can't stop it showing "installation" still in progress, even after turning off phone a few times. Can I force it to end the installation - have looked in all settings and can't find how!
    09-23-2015 06:42 AM
  2. B. Diddy's Avatar
    Welcome to Android Central! Something has clearly gone wrong. Force a shutdown by pressing and holding Power for about 10-15 seconds, wait 10 seconds, then try booting into Recovery Mode and wiping the cache partition. https://support.t-mobile.com/docs/DOC-11663
    09-23-2015 07:04 PM

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