Hi Peter
Finally I found some time for instalation of iode.
Can you please help me a bit with installing? There is no recovery in your files and I don’t know what would be the command to install using fastboot.
On /e/ I used fastboot for unlocking and writing the /e/ recovery on the phone; but the fastboot command should be different. On the phone I have
The XZ2 premium I want to install has Microg Lineage OS 21… so very similar.
Thank you in advance!
The recovery image for this device is boot.img (see here) It is in the file iode-5.5-20240917-UNOFFICIAL-aurora-images.zip. Download and unzip it: you should see noot.img, dtbo.img, and vbmeta.img
The file to use for installation via fastboot is iode-5.5-20240917-UNOFFICIAL-aurora-img.zip. The command to flash it is fastboot --skip-reboot -w update iode-5.5-20240917-UNOFFICIAL-aurora-img.zip (The -w will wipe your data partition i.e. do a factory reset. You need it for the first installation. After that, for updates you should omit it to keep your user-installed apps and data)
Good luck
EDIT:
You could try dirt flashing over you LOS 21.0 installation: using recovery and adb sideload, don’t do the factory reset; using fastboot, omit the -w. That may work and keep your user-installed apps and data. It may not work however, and you may need to factory reset / format data after all, but worth a try maybe 
Thanks a lot Peter! I saw you reply too late to be able to do it yesterday but it’s planned to make this installation ASAP.
It took quite a lot of time as this XZ2 premium was my daily driver, but I’m switching today its role so it would be simpler to make the installation. Hopefully I’m not going to brick my phone (that would be a first after many custom ROM installations!)
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