Alcatel One Touch M'Pop 5020D firmware update

My Android version is 4.1.1. and I got a notification about new firmware 01002. Does anybody know what is this firmware update about? I can't find any info about it and Alcatel support didn't replied to me. My phone just say this: "This update will improve the user experience and product performance. Please rest assured that you will not lose your data during the system update". This is not much helpful. :D

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