Posted on Oct 18 2013 - 1:36am by Anurag Kumar

Recently Sony made a statement on their official blog that a major bug fixing android 4.2.2 update is rolling for Xperia Z1 and Xperia Z Ultra and also listed the changelog officially. Yesterday we saw 14.1.G.2.257 firmware update on Xperia Z1 which improves Camera, display and power consumption although on our experience of 14.1.G.2.257 firmware, except camera every thing is still buggy on Xperia Z1. It still has yellow hue tint and a lot noise in images taken from its camera app.

Our prediction of 14.1.B.2.257 firmware update to come on Xperia Z Ultra came true.  Xperia Z Ultra has been updated to 14.1.B.2.257 firmware, a major update from the previous 14.1.B.1.532 firmware which has many issues like poor touch response, fake SOD issue etc.

14.1.B.2.257 firmware update is confirmed on both Xperia Z Ultra C6802 HSPA+ and C6803, C6833 LTE handsets, available via OTA as well as PCC and SUS. Confirmed in UK region. Below image via [ via XDA user avetny ].

Xperia Z Ultra 14.1.B.2.257 firmware Major OTA update rolling

Xperia Z Ultra 14.1.B.2.257 firmware Details

Xperia Z Ultra 14.1.B.2.257 firmware Details

  • Phone Model – Xperia Z Ultra C6833
  • Android – 4.2.2
  • Baseband version – 8974-AAAAANAZQ-10270011-21
  • Kernel Version – 3.4.0
  • Build – 14.1.B.2.257

Xperia Z Ultra 14.1.B.2.257 firmware Details

Sony has also updated the 14.1.B.2.257 firmware details on their website with full changelog. As soon as 14.1.B.2.257 ftf is available we will update it in post.

Download Xperia Z Ultra 14.1.B.2.257 firmware ftf for manual flashing 

Download below firmware ftf and flash it with the help of flashtool.

Download C6820_14.1.b.2.257_Vietnam.ftf

Xperia Z Ultra 14.1.B.2.257 firmware Major Update Rolling

Xperia Z Ultra  14.1.B.2.257 firmware Changelog – As per Sony

Sony quoted below changelog on their website.

  • Display optimized, more bright.
  • Touch screen more responsive.
  • Battery life improved.
  • Email sysnc more faster now.
  • Performance tweaks.

It seems Sony still has been able to provide a stable firmware to Xperia Z1 and Z Ultra.

Although what Sony states, users hardly get in firmware update. So please drop your comments on your review of 14.1.B.2.257 firmware update for Xperia Z Ultra. Have you got it, let us know…

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1 Comment so far. Feel free to join this conversation.

  1. addicthead November 16, 2013 at 11:56 am - Reply

    this update killed my SDcard silicon power 32gb class 4, after 2 day of using… replace another then it killed it again another sd.. transcend 8gb class 4 instantly… now i reset to factory settings… install another SD 8gb sandisk class 10 still working until today working for 5 days now.

    new update made the phone hotter just for browsing using chrome.. ive been using the phone since aug did 3-4 updates firmware since.

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