Boot loop after trying to root.

[Random667]

I followed the instructions here: https://theunlockr.com/2015/09/19/how-to-root-the-sony-xperia-z4-tablet/
I unlocked the bootloader, flashed the new boot.img, then rebooted.
It now keeps going to the sony logo then restarting over and over.
Please help!

 

[Random667]

I got out of the boot loop by installing version 43 from here: https://drive.google.com/drive/folders/0B0j3VJ1Xp5N8cnhQamtxRWVtRmc
But now I'm still not rooted

 

[DHGE]

But now I'm still not rooted

AndroPlus kernel is not up to date anymore.
AndroPlus kernel is NOT rooted.

You need to flash SuperSu or Magisk (did not try M.) after flashing a custom kernel.
The flawed documentation also left out the installation of a recovery necessary for this.

 

[Random667]

Im able to flash TWRP and boot into it but then I have to re-flash the boot.img to get back into android.
It seems I cant have TWRP and boot.img working at the same time.

I just looked at the guide in your footer, I'm guessing I lost my TA partion
There was no mention of that on sonys bootloader unlock info page.

 

[Random667]

I finally got it.
To get into recovery I had to use the command: fastboot boot TWRP-3.1.1-lineageos-karin-20170520.img
I was then able to install superSU

 

[DHGE]

I just looked at the guide in your footer, I'm guessing I lost my TA partion
There was no mention of that on sonys bootloader unlock info page.

I really do not know why they do not mention and link my [Guide].

 

[Random667]

And the guide I read on flashing the recovery said to use this command: fastboot flash boot TWRP-3.1.1-lineageos-karin-20170520.img
That was flashing the recovery to the boot partition!
The same guide said to hold both vol+ and vol- to boot into recovery, that's why I was having such a hard time.