Sony Xperia Z4 Tablet can't actually be installed?

[yamanobe]

https://devices.ubuntu-touch.io/device/karin/

I bought the Sony Xperia Z4 Tablet wi-fi version "SGP712JP" with no worries because of what it says here!
I excitedly booted up the android tablet that arrived and turned on developer mode, OEM unlock and USB debugging.
I downloaded the windows version of Ubports Intaller [ubports-installer_0.8.9-beta_win_x64.exe] and installed ubuntutouch, but the tablet is still dark and the blue LED is glowing.
The installation stops halfway and does not complete.

Is the Sony Xperia Z4 Tablet actually unsupported?

Translated with www.DeepL.com/Translator (free version)

[z4Tab]

@yamanobe Are you absolutely sure that no error message? My device is stuck in a loop. You can hardly see it, because the message only lasts about 0.2 seconds. Possibly go into a dark room to see this message.
To see und read this I used a camera and recorded it.

E:failed to mount/cache (Ivalid argument)
E:Can't mount /cache/recovery/last_locale

Thus, unfortunately, I can't fall back on Android either. In any case, I have not yet found out how I would have to proceed to do this.

[nero355]

@z4tab
Boot with Power Button + Volume Down pushed into Fast Boot and then Flash the Stock Android ROM with the Tools that Sony provides for your Tablet ?!

[yamanobe]

@z4tab
Today, I also got SGP771 and installed ubuntutouch!
As a result, I get the exact same error as you and it stops at the "adb is scanning fordevices" screen.
I think this is a bug, since both you and I have the same symptoms.
You need to report this somewhere and ask for support!

[nero355]

@yamanobe said in Sony Xperia Z4 Tablet can't actually be installed?:

@z4tab
Today, I also got SGP771 and installed ubuntutouch!
As a result, I get the exact same error as you and it stops at the "adb is scanning fordevices" screen.
I think this is a bug, since both you and I have the same symptoms.
You need to report this somewhere and ask for support!

Please be specific :

• Did you succeed in running Ubuntu Touch on it or not ?!
• How did you try to install it ?
• What software did you use ?

For example : If you used the latest Ubuntu Touch Installer then it might be a good idea to try a older version, because there were some posts about the most recent version not beeing Stable enough!

Also : Maybe try to run/start ADB before you start with the process to see what is going on ??

[yamanobe]

@nero355 　Thanks
The installation of ubuntu touch failed.
I used ubports-installer_0.8.9-beta_win_x64.exe
I used Flashtool because xperia can be unlocked by using Flashtool software.
I used Flashtool because xperia can be unlocked using Flashtool software. o Developer mode of tablet is ON. o OEM unlock and USB debugging are ON.
Is ubports-installer_0.8.9-beta too new? Is ubports-installer_0.8.9-beta newer or should it be older?
Is the run/start ADB the result of running in power shel?

Do I need to install TWRP on the tablet before running ubports by any chance?

[nero355]

@yamanobe said in Sony Xperia Z4 Tablet can't actually be installed?:

The installation of ubuntu touch failed.
I used ubports-installer_0.8.9-beta_win_x64.exe
I used Flashtool because xperia can be unlocked by using Flashtool software.
Developer mode of tablet is ON.
OEM unlock and USB debugging are ON.

Sounds good!

I just have no idea what Flashtool is : Sony specific tool ?

Is ubports-installer_0.8.9-beta too new? Is ubports-installer_0.8.9-beta newer or should it be older?

Please just try going back one or two versions and if that doesn't work perhaps a couple of versions more, because there were some issues mentioned with the latest version

Is the run/start ADB the result of running in power shell?

Don't know about Power Shell in Windows to be honest...

I only use these two for ADB commands :

• Command Prompt in Windows 7
• Terminal & Bash in Kubuntu 20.04 LTS

Do I need to install TWRP on the tablet before running ubports by any chance?

As far as I know you don't need to, because Ubuntu Touch will flash it's own Recovery version!

[z4Tab]

@yamanobe

Were you able to successfully launch the edl-mode?

[aiwo]

Did anybody solve this issue?

[AppLee]

Hi @aiwo
This is an old post and the OP is inactive for more than 6 months.
If you have this issue you might want to consider creating a new post instead.

[z4Tab]

@applee I'm still here and waiting for substantive replies .....

[AppLee]

@z4tab
Glad to see it and thanks for the help so far.

I was referring to yamanobe, the original poster that may or may not have fixed their issue.