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2015-08-04 02:05 PM
I was hoping someone would be able to help me downgrade my Sony Z3 Tablet Compact tablet SGP612 lollipop 5.1.1 to kitkat 4.4.4? It is a UK model.
I bought this tablet solely for remote play streaming from the PS4. The streaming worked ok when I first got the tablet but was close to perfect when the 60fps PS4 firmware came out.
Then lollipop came out and unfortuantely there has been massive lag with remote play on my tablet since, this includes the latest 5.1.1 lollipop update. I can confirm that I have done a fresh install of 5.1.1 from the PC companion app but there is still noticeable lag in remote play.
I also have a decent Asus RT-AC66u router running Merlins firmware and the tablet is connected via 5ghz.
So on 03/08 I decided I've had enough and followed the guide to downgrade to Kitkat at http://www.xperiablog.net/2015/03/17/guide-to-installing-xperia-lollipop-using-xperifirm-and-flashto... but the problem is the kitkat 4.4.4 firmware is no longer in the Xperifirm list of firmwares there are only 2 versions listed which are both lollipop, can someone please advise where I can get the appropriate kitkat firmware?
I am not rooted and don't want to be as I would like to keep my DRM keys etc.
Thank you for all of your help.
2015-08-04 02:30 PM
I can find 4.4.4 but it's from TW Taiwan I think if it's any good to you then see here
If you don't know how to use Flashtool then reply back and I'll direct you to a guide
2015-08-04 05:51 PM
Thank you for your quick response and your help.
I don't suppose anyone could possibly help with a UK version of the firmware?
I am unsure what filename the UK version would be so unfortunately I'm unable to search the web for this.
2015-08-04 06:28 PM
2015-08-04 07:04 PM
Flashing another countries firmware won't delete your DRM keys but you may have apps which you wouldn't normally have however the filename will be the same but you'd want the UK variant, There's lots of Uk firmware for the other two versions just not your version that been the 32gb
2015-08-04 07:06 PM
Forgot to add you could create your own Uk firmware of LP so in the future you can manually flash to it - You will still get updates but if you flash the TW firmware then all future firmware will be TW until such time you change to the Uk manually
2015-08-05 03:07 PM
I have flashed the taiwan kitkat firmware and tried remote play again - I can confirm that this has significantly reduced input lag.
Thank you for your help!
It would be good if Sony can reduce the input lag of remote play in Lollipop to match Kitkat - There is a significant difference.
2015-08-08 07:18 PM
Are you referring to downgrade?
"I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)
2015-08-11 03:35 PM - edited 2015-08-11 03:39 PM
Hi, Z1 behaviour weird - it has "screamed" inaudible tone like it will explode or something
Happened tonight before bed on power plug in. Twice.
I don't like 5 can I restore back to 4. using pc companion?