FTF XPERIA Z Ultra 14.2.A.0.290 Central Europe

Sony Mobile yesterday release new Android 4.3 Jelly Bean for XPERIA Z Ultra and here is workinf FTF with this firmware, Central Europe branding, so no bloatware, no customization.

Download -

Google Drive - https://drive.google.com/file/d/0B_d...it?usp=sharing

Mega - https://mega.co.nz/#!sVhB3SbA!a1pW-V...Ru-E9yo8Uaaefk

source - http://xperiafirmware.com/8-firmware...-z-ultra-c6833

Sony XPERIA Z Ultra with official Android 4.3 Jelly Bean firmware 14.2.A.0.290 - YouTube

http://galerie.xperia.cz/albums/user..._0058%7E16.JPG

It is following 5 guidelines showing HOW TO:

1. how to install the newest Android 4.2.2 for your phone (for Sony XPERIA Z Ultra C6833 it is currently the 14.2.A.0.290 firmware)
2. how to install the newest Android 4.2.2 for your phone (for Sony XPERIA Z Ultra C6833 it is currently the 14.1.B.2.257 firmware)
3. how to backup your original firmware customization (it is important in case you must send your phone to service)
4. how to unlock the bootloader (in case you want to install the custom kernels with recovery menu and much more)
5. how to relock bootloader on your phone

1. how to install the newest Android 4.3 for Sony XPERIA Z Ultra C6833

a) first of all, check your firmware version (if you already have the newest one, you do not need this tutorial)
b) download and install latest Flashtool from here (mirrors Google Drive or Mega)
c) download also latest Android 4.3 (mirrors Google Drive or Mega) for Sony XPERIA Z Ultra
d) paste the ftf file downloaded in step c) to folder „Firmware“ included in the XPERIA Flashtool
e) open the XPERIA Flashtool, click on flash and choose downloaded firmware, than click ok. Important - if you do not want to delete any data of your phone, just uncheck flashing userdata.sin file. All data will remain in your phone, but sometimes it can cause additional troubles. So it is better (and I recommend that) to do the backup of your personal data, than proceed with clean instalation and then restore your personal data.
f) turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button
g) after few minutes all is done and your phone gets the new firmware

Sony XPERIA Z Ultra with official Android 4.3 Jelly Bean firmware 14.2.A.0.290 - YouTube

2. how to install the newest Android 4.2.2 for Sony XPERIA Z Ultra C6833

a) first of all, check your firmware version (if you already have the newest one, you do not need this tutorial)
b) download and install latest Flashtool from here (mirrors Google Drive or Mega)
c) download also latest Android 4.2.2 (mirrors Google Drive or Mega) for Sony XPERIA Z Ultra
d) paste the ftf file downloaded in step c) to folder „Firmware“ included in the XPERIA Flashtool
e) open the XPERIA Flashtool, click on flash and choose downloaded firmware, than click ok. Important - if you do not want to delete any data of your phone, just uncheck flashing userdata.sin file. All data will remain in your phone, but sometimes it can cause additional troubles. So it is better (and I recommend that) to do the backup of your personal data, than proceed with clean instalation and then restore your personal data.
f) turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button
g) after few minutes all is done and your phone gets the new firmware

Sony XPERIA Z Ultra - první phablet se Sony Mobile moc povedl - YouTube

4. how to unlock your bootloader

a) download and install latest Flashtool from here (mirrors Google Drive or Mega)
b) start Flashtool and click on BLU button on the top
c) turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button
d) click on get unlock key button, it will switch you to Sony Mobile website, here complete all boxes
e) copy IMEI form Flashtool to Sony Mobile site, than you will get unlock code to your mailbox
f) copy unlock key to Flashtool window and than click unlock
g) connect phone with holding volume up button when Flashtool shows pop up window
h) wait to unlock finish

Ovládáme Sony XPERIA Z Ultra pomocí oby

5. how to relock your bootloader

a) download and install latest Flashtool from here (mirrors Google Drive or Mega)
b) start Flashtool and click on BLU button on the top
c) turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button
d) just click on relock button and your bootloader is locked for now

Sony XPERIA Z Ultra versus Sony XPERIA Z - YouTube