My Xperia Tablet Z doesn't update to the latest software update

[Juz0n]

Dear Sir/Madam,

I have difficulty to update to the latest version of xperia tablet z firmware.

I bought my xperia tablet z wifi while I was studying in Japan back in August 2013 at Bic Camera store, I'm back in Indonesia right now. when I connected my tablet to Sony PC companion it says that my tablet is up to date, while it's not.

In xperia website it says that the latest firmware is 4.4

But my tablet z is still on 4.2.2

Model number SGP 312JP/B

Type TS-0000-CV

FCC ID PY7TS-0000

IC 4170B-TS0000

AAB

13W13

SN 43010001 0004719

1100-0000-021631-4

Build Number 10.3.1.c.0.136

Kernel version is 3.4.0-g7eaf37a-01078-g2ebac89

BuildUser@BuildHost#1

Sat Aug 10 13:07:11 2013

Could you please kindly help?

Thank you for your help.

Sincerely,

Juz0n

[Uliwooly]

Just like any other updates

http://www.sonymobile.com/global-en/software/tablets/xperia-tablet-z/

Latest available software

You may already have the latest software, depending on the date of purchase. Software updates are released at different times depending on operator and/or country. Therefore, we cannot give you an exact date for when a specific update will be available for your device.

Android version: Google Android 4.4 (Kitkat)

Latest available software: 10.5.1.A.0.283

Release started: 2014-09-09

[Uliwooly]

In other words you have 2 options

1. wait for the update to be approved and released for that specific model and in that country/region 

or 

2. manually update your Xperia Tablet Z with Flashtool 

[Juz0n]

Hi uliwooly,

how do I know which version is approved and released in my country?

and for update with flashtool, would the procedure be newbie-friendly? or do I need some technical knowledge to flash with flashtool? I read somewhere that there would be possibility of "brick-ing" when I use flash tool. Can I "un-brick" my tablet when that happens?

Also which country version that I should use for updating using flashtool? or any country version is fine?

Thank you.

[Uliwooly]

Its not your country, it will be Japan in this case since the Tablet was bought at Japan. 

[Uliwooly · Accepted solution]

As for Flashtool

http://talk.sonymobile.com/t5/Xperia-Z2/How-to-manually-update-downgrade-root-2014-Xperias/td-p/5934...

just get the FTF file on the XDA Forum

[Juz0n]

Okay, got it. I will read carefully and try to understand what do I need to do to update using flashtool.

I will contact Japan's xperia care to find out which version is the latest.

Thank you for your help Uliwooly. Much appreciated.

[Uliwooly]

Anytime