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Hello I download the update of the system but at the moment of installing it restarts the computer finishes the installation and a message appears that the new version can not be applied.
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Your post had been translated as this is a Global forum all posts/replies must be in English 
Just to clarify, are you attempting to update the handset through Xperia Companion on your PC? If not, how are you updating the phone?
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Sir my sony Xperia xa1 ultra divice new software update requirement please help me sir