@stephenchamb Hi, you need a windows PC. You need to download the MI Unlock Tool latest version from here.

Once that is done, make sure ADB drivers and Fastboot drivers are installed on the PC - I install Android Studio as it has the latest versions. You will need this to Install Ubuntu Touch and you will need to open a command prompt in the Android Studio Folder so you can run the ADB and fastboot commands. (Windows go to Folder Options and enable "Show Hidden Folders", then go to C drive>Users>YourAccountName>AppData>Local>Android>SDK>PlatformTools and open a Command Prompt there).

You need to enable developer mode on the phone. Power off the phone and insert your SIM (make sue it is active). Power on the phone and once into MIU create a MI account. This is required to unlock the device.
Go into settings>about device and look for the build number. Tap it until Developer Options is enabled, it will say "You are now a Developer". Go back to the main menu of Settings and go to Additional Settings. Find Developer Options and look for the "OEM Unlock" button and "USB Debugging" button, make sure they are switched on. Come out of settings and then go back in and go back to Developer Options. There should be a button that says "Check Unlock Status". Click on that and follow the instructions.

Connect your phone to the PC and boot to the BootLoader, usually switch off the phone and then power up holding the Power On and Volume Down Button. Should get a little dog tinkering with Android with FASTBOOT underneath.
Run the MI Unlock Tool
You are only allowed to unlock obne device per month.

Best of luck.

Hi there,
I have this problem while installing UT from a Debian system.
Not sure if I'm stubborn or that I went to bed and wait until the next day, but the fact is that while the phone was on the Recovery I run again the installer and things went smoothly.

@arubislander Sorry I am not a fan of necroing old threads, I didn't notice the date. For some reason it appeared in my unread post list.

@suoko That is exactly what happens when I try the same on a Oneplus 3.

It looks from the devices list like the Redmi 4 / 4x are very incompletely supported (below 30%), and the port seems to be inactive; unfortunately that means that it's unlikely to be improved in the future.
In other words, this may just be how it is.

@suoko
Yes it's the first app to update indeed 😉

Same issue, can't install Touch.
Data and System already formatted to ext4
UBports recovery flashed
Installer is always stuck on "ADB is scanning for devices".
Any alternative ways to install and/or ways to get it recognized through adb?
On Win7

@keneda
FileNotFoundError:http//system-image.ubports.com/pool/ubports-cd.......
......tar.xz

@keneda yeah, exactly i thougt about touch keys under cover of the phone. I understand that ubuntu touch works on gestures but i think that this would be grate idea to create some shortcuts to some applications/functions. A lot of phones have additional keys on cover for example mi 9 (to google services).

@raphaey As I said above I don't have this device so no direct knowledge but, from what you say you only had recovery installed. Either try again and choose the wipe option on the installer you should not have to do anything other than follow the installer instructions.
Or as @Dimka said
"managed to establish Ubuntu Touch . first put TWRP , cleared everything . and only after cleaning installed Ubuntu Touch . Thank you all for the answers, I hope I have one problem with the installation"
Use twrp wipe everything then try the installer. The newest device I have is a OP3 so am not the ideal person to help on this. Though that had a similar issue with needing twrp to wipe, clear and format cache and data for the installer to work