@reynald Files correctly dowloaded with installer 0.9.1beta.
Now it hangs at adb stage :
info: device detected: enchilada
info: Installing Ubuntu Touch on your OnePlus 6/6T (enchilada)
info: configuring...
info: settings: {"bootstrap":true,"channel":"16.04/arm64/android9/stable"}
info: Downloading 10 files
info: Downloaded file 1 of 10
info: Downloaded file 2 of 10
info: Downloaded file 3 of 10
info: Downloaded file 4 of 10
info: Downloaded file 5 of 10
info: Downloaded file 6 of 10
info: Downloaded file 7 of 10
info: Downloaded file 8 of 10
info: Downloaded file 9 of 10
info: Downloaded file 10 of 10
error: Error: adb:preparesystemimage: Error: {"error":{"code":1,"cmd":"adb -P 5037 shell mkdir -p /cache/recovery"},"stderr":"mkdir: '/cache/recovery': Required key not available"}
stack trace: Error: {"error":{"code":1,"cmd":"adb -P 5037 shell mkdir -p /cache/recovery"},"stderr":"mkdir: '/cache/recovery': Required key not available"}
at /opt/ubports-installer/resources/app.asar.unpacked/node_modules/promise-android-tools/lib/module.cjs:117:20
at ChildProcess.exithandler (node:child_process:413:5)
at ChildProcess.emit (node:events:394:28)
at maybeClose (node:internal/child_process:1067:16)
at Socket.<anonymous> (node:internal/child_process:453:11)
at Socket.emit (node:events:394:28)
at Pipe.<anonymous> (node:net:672:12)