OnePlus 7T Pro ‘hotdog’ massively flawed (!)
Upgrade Android S e-1.9-s-20230312268558-dev-hotdog
I did an upgrade from /e/OS V1.6-r (Android R) with /e/Recovery to /e/OS V1.9-s (Android S) via adb sideload. The system boots, but the touch screen does not respond.
Pressing the power button brings up the menu with the four buttons Emergency | Power Off | Restart | Screenshot, but - the commands are not accepted.
Any screen touch is ignored by the system. The system cannot be turned off via the device key Power.
I could only get into the /e/recovery via adb reboot recovery.
I repeated the /e/OS ‘S’ upgrade via adb sideload. The result was just as erroneous.
A downgrade to /e/OS ‘R’ 1.8.1-r was not possible.
Of course I had not made a backup, but - my lifeline was LineageOS 20 by LineageOS Android Distribution.
I installed via
fastboot flash dtbo dtbo.img
fastboot flash vbmeta vbmeta.img
as well as
fastboot flash recovery recovery.img
most recently
lineage-20.0-20230314-nightly-hotdog-signed.zip.
The LOS 20.0 installation was flawless, the touch screen responds to input as it should. My installed apps and personal data remained intact.
Hui, once again lucky.