Fastboot is a feature available on Xiaomi, Mi, Redmi, and POCO phones that allows users to write data to the internal storage of the device without booting the entire system. It is a mode that is part of all Android phones and is intended for advanced users. Fastboot mode is necessary for installing custom firmware, changing the MIUI region, testing beta versions, or rolling back to a previous MIUI version.
To enter Fastboot mode on a Xiaomi, Mi, Redmi, or POCO phone, you need to turn off the phone completely and then press and hold the power and volume down buttons simultaneously until the Fastboot screen appears. To exit Fastboot mode, you can hold down the power button for about five to seven seconds, and the phone will be forcefully restarted.
Fastboot ROM is official stock firmware in TGZ format that is released by Xiaomi to install MIUI in bootloader mode. It is available for all models of Xiaomi smartphones and tablets, Redmi, Mi, and POCO phones. To install the Fastboot ROM, you need to connect your device to your PC and use the Mi Flash Pro firmware program.