How to update Android version of Panasonic P55?

It has been 2 years and I'm using Panasonic p55.It runs in android version 4.4.2 Kitkat .Till now also I didn't abled to update my android version.How can I update it?

Hi there. There's no official update available for Panasonic P55. You might want to try using custom roms for your phone.

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