A number of Sony Xperia Z5 users have been reporting issues when upgrading to Android 6.0 Marshmallow. One of the more common problems is with the Google Play Store, which crashes as soon as you try to open it. No amount of clearing the cache, or app data will resolve the problem. The main fix is to do a clean install of the firmware, which can be a pain, especially if you do not have a backup.
This is an issue that we came across ourselves when we upgraded to Marshmallow and had to reinstall the software to fix the problem. There is a long thread of others on the official Sony Mobile Talk forums who have had a similar issue. Sony’s advice can be seen below on how to resolve the problem, but the number of complaints has led Sony Canada to pull the update until it can provide a fix. If you had the issue let us know below, including how you resolved it.
Xperia Z5/Xperia Z5P owners: we’ve removed the Android 6.0 update at this time & will advise once it’s been re-issued. Thx for ur patience.