@yoni Thank you, I will give it a try.

@yoni I'm not quit sure if I got all your steps correctly.

1. Turn on USB debugging --> done
2. Enter bootloader --> how do I do that? Edit: it turns out that the phone has to be connected to the wifi, so OEM unlocking is on now

But when starting the phone with Powerbutton+Volume down I only get a screen that says "Fastboot", but nothing happens, so I can't execute your third advice

@yoni said in Installation of Ubuntu Toch on Xiaomi Mi A2 doesn't work:

@falconer78
Turn on USB debugging, enter bootloader and through ADB execute:
fastboot flashing unlock
Should solve the issue hopefully.

Thank you. Is there a guide or manual how to do the things you suggested?

Hi, thank you for your respone. Although I'm in the developer options, the part "OEM unlocking is greyed out and I cannot change it to "on".

I used the UB Ports Installer to install Ubuntu Touch on my Xiaomi Mi A2. I followed the steps in the installer, but I always get this message:

Error: fastboot:format: Error: formatting failed: Error: {"error":{"code":1,"cmd":"fastboot format:ext4 system"},"stdout":"Creating filesystem with 786432 4k blocks and 196608 inodes\nFilesystem UUID: cd4fb2b7-b8ff-4418-ad08-292645e0c0f6\nSuperblock backups stored on blocks: \n\t32768, 98304, 163840, 229376, 294912\n\nAllocating group tables: 0/24\b\b\b\b\b \b\b\b\b\bdone \nWriting inode tables: 0/24\b\b\b\b\b \b\b\b\b\bdone \nCreating journal (16384 blocks): done\nWriting superblocks and filesystem accounting information: 0/24\b\b\b\b\b \b\b\b\b\bdone","stderr":"< waiting for any device >\nmke2fs 1.45.4 (23-Sep-2019)\nSending 'system_b' (92 KB) OKAY [ 0.006s]\nWriting 'system_b' FAILED (remote: 'Flashing is not allowed in Lock State')\nfastboot: error: Command failed"}

Can someone tell me what I need to do to install Ubuntu Touch? The Phone is on Android 10, maybe this is the problem?