New firmware certified for T-Mobile Xperia Z (10.3.1.E.0.191)

by XB on 4th November 2013

in Firmware, Xperia Z and Xperia ZL

Xperia Z_10.3.1.E.0.191A quick heads-up to let T-Mobile Xperia Z (C6606, C6616) owners know that a new firmware build has been certified on the PTCRB website. Firmware version 10.3.1.E.0.191 uses a different template to the previous version i.e. 10.3.1.E.0.XXX versus 10.3.1.A.X.XX – what relevance this has, we can’t say right now.

We don’t think the ‘E’ would signify an Android 4.3 build, we may not even see this build released (it hasn’t appeared for the HSPA+ and European LTE models). We’ll keep you posted, Sony has promised details on the progress of the next major Android updates later this week.

Xperia Z_10.3.1.E.0.191

  • Nikolai ivanov

    when list of phones with 4.3 and 4.4 update ??

  • xperialover

    well i can tell what “E” stand for E-ultra band =Evolved Universal Terrestrial Radio Access (E-UTRA) in early drafts of the 3GPP LTE meaning t-mobile will enable user to use full speed

  • xperialover

    probably for US

  • Ostap Koloda


  • nerd

    No.Just no. The E stand for the letter that comes after D in the alphabet.

  • afsdgaerh

    Xperia Z android 4.3 ???? wtf/.

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  • barom

    T Mobile version doe not currently have 4.2 so im guessing it’s that

  • Chris

    Sony stated before that for those devices that are supposed to get 4.2 and didn’t. They will skip them to 4.3.

  • scottf

    4.2.2 with wifi calling…

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