Fastboot Command Link ✦

fastboot devices fastboot getvar all fastboot flash boot boot.img fastboot flash recovery recovery.img fastboot erase userdata fastboot reboot fastboot oem unlock fastboot flashing lock fastboot boot twrp.img fastboot set_active _a

fastboot devices fastboot getvar all > device_info.txt fastboot getvar unlocked # should say "yes" or "no" fastboot getvar current-slot # A/B devices fastboot oem device-info If all variables are readable and the bootloader is unlocked, the device is ready for flash operations. Fastboot is an essential low‑level tool for Android development, repair, and customization. Its command set enables partition management, boot testing, and full system restoration without relying on a functional OS. However, correct usage requires an unlocked bootloader, proper USB connectivity, and careful partition targeting. When standard recovery methods fail, Fastboot remains the last line of software‑level access before JTAG or ISP hardware tools. Appendix – Quick Command Card fastboot command

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