We’ve all been there. You need to flash a factory image, boot into recovery, or side-load an update. You go to download the official SDK Platform Tools, and suddenly you’re staring at a bloated 500MB+ package just to run a few lines of code.
This is actually expected behavior if you haven’t restarted into Fastboot mode. ADB works only when the Android OS is running. Fastboot works only when the device has been rebooted into the bootloader. Make sure you use adb reboot bootloader before trying Fastboot commands. minimal adb and fastboot 143 setup hot