How to wipe data on a bootloader-locked, broken screen, Nexus 6P

I want to sell my Nexus 6P for parts, but I want to wipe it first. The screen of my Nexus 6P broke (internally, the touchscreen MIGHT be fine, idk). The phone is full-disk encrypted with a PIN and the bootloader is locked (no root). I can't fully boot the phone since it will be stuck on the FDE pin entry. As we know the Nexus 6P does not have external monitor support - so this is not an option. I do have ADB and Fastboot access, but commands like fastboot erase userdata are blocked, since the bootloader is locked. Also various adb shell commands did not work. ## What I tried: ### ADB Shell: Recovery --wipe_data adb shell recovery --wipe_data /system/bin/sh: recovery: not found [source](https://stackoverflow.com/questions/14685721/how-can-i-do-factory-reset-using-adb-in-android) ### ADB Shell: Wipe Data adb shell wipe data /system/bin/sh: wipe: not found [source](https://android.stackexchange.com/questions/175885/how-to-factory-reset-android-using-adb) ### Fastboot: Wipe adb devices # Check the phone is running adb reboot bootloader # Wait a few seconds fastboot devices # Check the phone is in bootloader fastboot -w # Wipe user data Erasing 'userdata' FAILED (remote: device is locked. Cannot erase) [source](https://stackoverflow.com/a/39357553/774398) ### Fastboot: Erase adb devices # Check the phone is running adb reboot bootloader # Wait a few seconds fastboot devices # Check the phone is in bootloader fastboot erase userdata Erasing 'userdata' FAILED (remote: device is locked. Cannot erase) [source](https://android.stackexchange.com/a/175887/48335) So the question is, what are my options to wipe my phone?