Flashing instructions:
- Download the ArrowOS recovery at https://files.danielml.dev/android/porsche/arrow-recovery.zip
- Unpack it, and using fastboot flash the vbmeta, vendor_boot, boot and dtbo:
* fastboot flash vbmeta vbmeta.img
* fastboot flash vendor_boot vendor_boot.img
* fastboot flash boot boot.img
* fastboot flash dtbo dtbo.img
- Then, reboot to recovery and flash the ROM using ADB sideload