Might Be Unbootable — Fastboot Error Failed To Boot Into Userspace Fastboot One Or More Components

This is arguably the most effective solution for this error. The goal is to force the bootloader to re-evaluate and mark the current partition slot as bootable.

From bootloader fastboot mode, try:

Your computer is running an outdated version of fastboot.exe , which cannot map or communicate with the device's dynamic layout. This is arguably the most effective solution for this error