Xperia X Concept 38.4.A.0.39 firmware released with May 2017 Android Security patch
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Sony Mobile made an announcement 2 weeks ago that in the beginning of May, they will make the last release to the Concept software for Xperia X and now it has been released. 38.4.A.0.39 firmware marks the last release to the Concept software for Xperia X
