Wrong model recognized in PC while recovering with TWRP and other issues - Sony Xperia Z Ultra

Hello, fellas,
I wanted to install TWRP, to have a custom rom in my Z Ultra. I followed the guide showed in https://forum.xda-developers.com/showthread.php?t=2647492 but unfortunatelly, i downloaded the first package, which it seems it was meant for T2 Ultra, and excecuted the .bat file. That file makes me enter in TWRP but as if it was T2, tianchi, so didnt allow me to flash a togari rom. I realized of the mistake, so i downloaded the one meant to Z Ultra, but still the computer recognized it as T2 Ultra.
After that I've tried to flash other images for TWRP, tried adb erase recovery, flash another TWRP.IMG (even 3.0.1 for togari) and still, while recovery, computer says i have a T2 Ultra, the version of TWRP is 2.8, and cant flash any custom rom, so nothing changes. Plus, i cant get into recovery by using the buttons, just via ADB, and still the same happens over and over again. Thanks in advance for any possible help

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Yes we are back at the topic of the messy forum.
This thread is over two years old. It don't work on recent firmwares.
To start off.
Is your bootloader unlocked?
Have you ever flashed the last and most recent stock rom? 14.6.A.1.236 is the last firmware when support was ended.

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SUPERUSER said:
Yes we are back at the topic of the messy forum.
This thread is over two years old. It don't work on recent firmwares.
To start off.
Is your bootloader unlocked?
Have you ever flashed the last and most recent stock rom? 14.6.A.1.236 is the last firmware when support was ended.
Click to expand...
Click to collapse
Yes, my bootloader is unlocked. I'm trying to see if I can do that flashing u mention, as it's a new thing for me
---------- Post added at 05:09 PM ---------- Previous post was at 04:52 PM ----------
SUPERUSER said:
Yes we are back at the topic of the messy forum.
This thread is over two years old. It don't work on recent firmwares.
To start off.
Is your bootloader unlocked?
Have you ever flashed the last and most recent stock rom? 14.6.A.1.236 is the last firmware when support was ended.
Click to expand...
Click to collapse
Anyways it seems that by doing that flashing, my os will downgrade to KitKat...

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Download flashtool here
http://www.flashtool.net/downloads.php
With this you will flash the latest firmware.
Learn how to use flashtool here: http://www.xperiablog.net/2016/03/12/install-xperia-marshmallow-using-flashtool-and-xperifirm-guide/
But in the link above instead in xperiafirm choose "togari" and your model C68xx and the most recent corrensponding to your location or carrier.
Download it and flash it. It will erase everything so backup your storage to a computer.

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SUPERUSER said:
Download flashtool here
http://www.flashtool.net/downloads.php
With this you will flash the latest firmware.
Learn how to use flashtool here: http://www.xperiablog.net/2016/03/12/install-xperia-marshmallow-using-flashtool-and-xperifirm-guide/
But in the link above instead in xperiafirm choose "togari" and your model C68xx and the most recent corrensponding to your location or carrier.
Download it and flash it. It will erase everything so backup your storage to a computer.
Click to expand...
Click to collapse
Thanks, I could already do the stock firmware flashing but now there is a situation : bootloader is unlocked, but when trying to root with flashtool, it says "illegal key size or default parameters" I've been searching but not clear info about that...
And about what you just replied...will try it! Thanks a lot

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I did it, succesfully...but still lollipop. I guess im back to the same start...

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CoderNesty said:
I did it, succesfully...but still lollipop. I guess im back to the same start...
Click to expand...
Click to collapse
Good. Lollipop is the last android version supported for togari.
Why you flashed the stock rom is because there has been changes to bootloader and recovery.
So you need to at least once flash the latest firmware to flash the roms here based on 5.1.1 or later.
Now flash twrp. https://forum.xda-developers.com/xp...ent/twrp-recovery-2-8-7-0-2016-02-03-t3307043
Now remember; starting with twrp 3.0> booting to recovery is done by powering off the device.
And then holding power and volume down until it vibrates. Let go and the phone will soon boot to twrp.
Now you can connect the phone to the computer and transfer any rom you would like to run.
When the cable is connected, in twrp go to mount, and press disable mtp button twice.
And the phone should now be detected on your computer.
Remember. There is no fully stable marshmallow or nougat rom.
These roms here on the forum are for testing purposes not for a daily driver with good battery and working camera for example.
The last remaining active rom is this one: https://forum.xda-developers.com/xp...t/rom-cyanogenmod-12-1-builds-t3066895/page20
Its lollipop based too but with the recent security patches.

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SUPERUSER said:
Good. Lollipop is the last android version supported for togari.
Why you flashed the stock rom is because there has been changes to bootloader and recovery.
So you need to at least once flash the latest firmware to flash the roms here based on 5.1.1 or later.
Now flash twrp. https://forum.xda-developers.com/xp...ent/twrp-recovery-2-8-7-0-2016-02-03-t3307043
Now remember; starting with twrp 3.0> booting to recovery is done by powering off the device.
And then holding power and volume down until it vibrates. Let go and the phone will soon boot to twrp.
Now you can connect the phone to the computer and transfer any rom you would like to run.
When the cable is connected, in twrp go to mount, and press disable mtp button twice.
And the phone should now be detected on your computer.
Remember. There is no fully stable marshmallow or nougat rom.
These roms here on the forum are for testing purposes not for a daily driver with good battery and working camera for example.
The last remaining active rom is this one: https://forum.xda-developers.com/xp...t/rom-cyanogenmod-12-1-builds-t3066895/page20
Its lollipop based too but with the recent security patches.
Click to expand...
Click to collapse
Thanks again for dedicating time to help me the thing is that when this phone was given to me, already had lollipop. So, what I wanted is as always, to try to upgrade it. I know that there are no stable customs roms... But what about porting? Do you recommend me to take some time to study it?

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CoderNesty said:
Thanks again for dedicating time to help me the thing is that when this phone was given to me, already had lollipop. So, what I wanted is as always, to try to upgrade it. I know that there are no stable customs roms... But what about porting? Do you recommend me to take some time to study it?
Click to expand...
Click to collapse
If you have the knowledge to port carbon rom or lineage os nougat it would be very welcome.
I own a Honami that has these roms. Honami and togari are very similar to each other and most off the roms here are actually ported from it or the Z1 compact, Z3 or Z5 to Z3 and then to togari.
https://forum.xda-developers.com/xperia-z1/development/rom-carbonrom-weeklies-t3660737
https://forum.xda-developers.com/xperia-z1/development/rom-lineageos-14-1-unofficial-t3628209
It is 100% possible to get a fully stable rom. It is being done on the honami because of larger interest in this phone.
It was mentioned here on the togari forum but no one actually did compile any rom like this.
What you do essentially to get a stable nougat is to keep using the old kernel 3.4 and add the modules and blobs needed and the togari specific drivers.
What you need is basically a powerful linux machine with lots of hard drive space and ram and time to let it compile.

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SUPERUSER said:
If you have the knowledge to port carbon rom or lineage os nougat it would be very welcome.
I own a Honami that has these roms. Honami and togari are very similar to each other and most off the roms here are actually ported from it or the Z1 compact, Z3 or Z5 to Z3 and then to togari.
https://forum.xda-developers.com/xperia-z1/development/rom-carbonrom-weeklies-t3660737
https://forum.xda-developers.com/xperia-z1/development/rom-lineageos-14-1-unofficial-t3628209
It is 100% possible to get a fully stable rom. It is being done on the honami because of larger interest in this phone.
It was mentioned here on the togari forum but no one actually did compile any rom like this.
What you do essentially to get a stable nougat is to keep using the old kernel 3.4 and add the modules and blobs needed and the togari specific drivers.
What you need is basically a powerful linux machine with lots of hard drive space and ram and time to let it compile.
Click to expand...
Click to collapse
I dared to flash a MM resurrection ROM, a real shame that works wonderfully except for the camera... Porting sounds like an interesting field for me. Unfortunately I can't count with such powerful machine right now. But I will keep searching, and thanks for your guidance any progression I have I will try to give feed in this thread