I know in order to enter recovery mode, short circuit the recovery mode pads.Is there any other method,can enter the recovery mode?For example through Colibri Evaluation Board or other methord.
There is no other hardware way to start a Colibri iMX6 in serial download mode, aka. recovery mode.
If the Boot ROM detects a corrupt bootloader it will go into serial download mode on its own.
If you still have a running U-Boot you can go to serial download mode by executing the ‘bmode usb’ command.
Currently we do not support forcing serial download mode from EBoot.