Posted on Apr 9 2014 - 11:13pm by Anurag Kumar

A few days back Sony acknowledged the issues on original android 4.4.2 KitKat 14.3.A.0.681 firmware rolled for Xperia Z1, Z Ultra, Z1 Compact like sound coming from hearing speaker instead from external speaker, heating issues, battery drain and promised to being a firmware update to fix those issues, it seems now 14.3.A.0.757 firmware update is rolling as new KitKat bug fixing update for above mentioned handsets.

14.3.A.0.757 firmware is a bug fixing update over 14.3.A.0.681 firmware which keeps Xperia Z1, Z Ultra, Z1 Compact on android 4.4.2 only. 14.3.A.0.757 firmware is confirmed on Xperia Z1 C6902, C6903 in regions India, Austria, Germany, Hungary, Netherlands, Poland, Slovakia, Sweden. 14.3.A.0.757 firmware is available over PC Companion and SUS, no OTA seen yet. It is a huge 1023.5 MB update if updated via PC Companion or SUS.

[ UPDATE – 9 April ]

Xperia Z1 Compact 14.3.A.0.757 firmware update rolling – KitKat Bug Fixing

Xperia Z Ultra 14.3.A.0.757 firmware update rolling – KitKat Bug Fixing

Xperia Z1 14.3.A.0.757 firmware update

Connect your Xperia Z1 to PC Companion and look for a notification as shown below, proceed as per on screen instructions.

Xperia Z1 14.3.A.0.757 firmware update

14.3.A.0.757 firmware Xperia Z1 C6903

Xperia Z1 14.3.A.0.757 firmware

168 applications are optimized in this 14.3.A.0.757 firmware update, you will see it as soon as firmware is finished installing first time.

Xperia Z1 14.3.A.0.757 firmware about phone details

Download Xperia Z1 14.3.A.0.757 firmware ftf

#For C6903 LTE Euro

Download C6903_14.3.A.0.757_EURO-LTE_Unbranded.ftf
[ Via XDA user – auras76 ]

We will soon post other regions 14.3.A.0.757 firmware ftf and detailed changelog. If you have also got the 14.3.A.0.757 firmware update on your Xperia Z1, let us know what changes you noticed. Drop your comments below.

About the Author

24 years old, an avid writer, passionate blogger, an engineer by college degree and Sony Xperia Smartphone enthusiast. Founder & Editor-in-Chief of GizmoBolt.com ( formerly XperiaGuide.com ). Devices owned : Xperia Z2, SP, Moto G, Lumia 625, Nexus 7 2013. Follow him at Facebook I Twitter I Google Plus. DONATE US. Contact him at anurag@gizmobolt.com for feedback and sending tips.

30 Comments so far. Feel free to join this conversation.

  1. SteepedBarley April 10, 2014 at 1:46 am - Reply

    Anyone can confirm, is this firmware has “Cost saving” in messages app and Sony Entertainment Network and does this rom above shows NFC icon when NFC turned on?

  2. Saleh Zwai April 10, 2014 at 10:47 am - Reply

    I received it about an hour ago in Libya via PCC, Still downloading

  3. SinaKing April 10, 2014 at 2:05 pm - Reply

    Now Live For Lund Sweden <3

  4. frank April 10, 2014 at 2:20 pm - Reply

    @SteepedBarley, No no and no.
    Mine does not have any of them.

  5. Hossam April 10, 2014 at 3:01 pm - Reply

    soooo goood i install on mine z1 KSA work Like charm

  6. Moein April 10, 2014 at 3:02 pm - Reply

    Please and please upload it to another host!
    Mega is so bad for Low connections speed because it can not be resumed!

  7. Vyshak April 10, 2014 at 3:41 pm - Reply

    Can anybody CONFIRM that those who had the sound issue earlier DON’T have it any longer with this new fix? I read somewhere that people are still experiencing sound cracking/ distortion for notifications.

  8. Moein April 10, 2014 at 4:41 pm - Reply

    Heating and battery draining… Solved?

  9. frank April 10, 2014 at 5:25 pm - Reply

    The heating and draining issue concerning the initial 4.4.2 update was gone after one day and a couple of reboots. This rom does not have these issues. And as mentioned above works like a charm. Only strange thing is the fact that i cannot change the lockscreen background, anybody nows how to fix this?

  10. Saurabh April 10, 2014 at 6:40 pm - Reply

    Update is huge. There should be pause and resume option. I want speaker problem solved and i also want Kitkat to allow third party apps to edit external sd card. Whatever I’m still downloading its been an hour now

    • Vyshak April 10, 2014 at 9:40 pm - Reply

      It shud ideally take you about 2.5 – 3 hrs on an average connection, don’t worry :) the download is close to a 1GB.

  11. liam April 10, 2014 at 10:04 pm - Reply

    This is really annoying me, here in the UK we are still on jelly beans and not kitkat :@

  12. Vyshak April 10, 2014 at 10:34 pm - Reply

    Guys I just updated my phone and I’m into the first hour of phone usage. Its looking bright and sunny this side. In brief I can confirm that: 1) The sound bug definitely seems to have gone. 2) faster/ better working camera including the auto-focus 3) smooth UI experience without any lags 4) lesser RAM usage. On the downside what I did briefly already notice is that sometimes the notification ringtone does sound distorted/ playing slow and cracked. But it was just once or twice that this happened, never after that. More detailed report later.

    PS: I don’t feel that the phone’s heating up either so nothing to worry about there too so far!

  13. akmal April 11, 2014 at 10:09 am - Reply

    If anybody know when the update will come to Malaysia? hope the update can come fast because it is too disappointed when your mobile has an issue like sound and lag on camera usage.. :-(

  14. ari3s April 11, 2014 at 5:53 pm - Reply

    Is this version restricting sdcard also? I just found that I can’t write files into my sdcard through any third party app after I upgraded the firmware to kitkat 4.4.2. I couldn’t find any solution for this as my phone is not rooted. I’m wondering whether this latest firmware can solve my problem…

  15. karam abi karam April 12, 2014 at 9:49 am - Reply

    sony solve sound problem, but now we have camera problem it is laggiest than before and picture are not clear.

  16. ester April 12, 2014 at 3:30 pm - Reply

    music widget on lockscreen missing when played, anybody else having this problem? help…thanks

    • Vyshak April 13, 2014 at 12:21 pm - Reply

      Mine seems to be working fine. Sorry to hear about that. Maybe do a clean re install? The only problem I have noticed so far is the occasional distortion in ringtones.. a little cracking I mean. Apart from that the update seems to be great for me.

    • Alejocali April 15, 2014 at 1:22 am - Reply

      Just uninstall the smartkey to solve, hope be helpful

  17. hakim April 14, 2014 at 12:12 pm - Reply

    Just finish update to firmware .757
    For the time being i don’t have any problem
    The ui is smoother

  18. Tom April 17, 2014 at 7:57 pm - Reply

    Hello people,

    As you can read from the topic, I am searching for a firmware build for my Sony Xperia Z1, which will have these options:

    1. NFC logo at the status bar, when turned on;
    2. Cost Savings function in messages app;
    3. Full Sony Entertainment Network integration (Movies, Music, Album, Play Memories).

    I tried many installs, but with no look. Sometimes I get Cost Savings, sometimes i get NFC logo, but not all of them in one place. If someone is using the build, which has all these options mentioned above, please share your Customization number, or even a link with a ftf. I will smash the Thanks button for you!
    Have a nice day and hope to see some help.

  19. Jay Seth April 24, 2014 at 10:14 am - Reply

    Hello…
    My Xperia Z1 has problem of Speaker Its Volume is very low We can’t hear it…only if you get it to your ears you can hear it and.even my.earpiece is louder than it ..it’s been 2 weeks when i’ve washed my phone or say dipped in water and..it’s not working..till..now please..Help What..to do..Now…!!

  20. Kam May 11, 2014 at 1:15 pm - Reply

    I’ve updated for a little while now but I’m having major issues with my camera! Whenever I try to take a PIC or vid it just freezes completely ! I have to turn the screen off then on and then just exit the app altogether. Anyone else have the same problem with this update ?

  21. aki May 15, 2014 at 8:22 am - Reply

    anyone tell me how to download this updates

  22. MarkJoseph May 17, 2014 at 7:07 am - Reply

    @Kam, im also experiencing the same problem with the camera and im also just doing the same, lock the screen and then go back to the home screen. Sony please fix. Images are noisy and the camera is one of the main reason I bought this phone!�

  23. ilker May 20, 2014 at 1:25 am - Reply

    With version .757, camera app starts to crash and freeze..Also notification sound is distorted..
    Camera problem is huge, Sony must fix it as soon as possible..

  24. Nika June 4, 2014 at 7:17 am - Reply

    I don’t know why all shown image and description as like sony Z1 C6902 but the link that you let us to download just only C6903. How can I do?

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