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

fastboot flash boot boot.img fastboot flash vendor_boot vendor_boot.img fastboot wipe-super super_empty.img fastboot flash super super.img fastboot reboot fastboot # now works | Cause | Fix | |--------|-----| | Corrupt super partition | fastboot wipe-super super_empty.img | | Missing userspace fastboot in boot | Flash correct stock boot.img | | Wrong slot active | fastboot set_active other | | Partial cross-flash | Full factory reflash (all partitions) | | Hardware failure (eMMC/UFS) | EDL/professional repair |

(example):

fastboot boot lineage-recovery.img If this works, you can flash from inside recovery. Download the full factory image for your exact device model. fastboot flash boot boot