hi NXP
I use Android-7.1.1.0 on I.MX6Q, when i input "adb shell reboot bootloader", it can not enter fastboot mode and just normal boot.
You can try this method https://community.nxp.com/t5/i-MX-Processors/MX8MM-won-t-enter-fastboot-mode/m-p/937720
never-displayed