The procedure for recovering the root password on the Wiren Board 6 controller
Connect to the debug port of the Wiren Board 6 controller (via microUSB-connector Debug Console). The connection is described in detail on the Debug UART page.
Turn on the power of the controller (the controller indicator lights green continuously) and when a message "Hit any key to stop autoboot:" appears with the selected countdown in the UART console, then press any key.
In response to the command line prompt => sequentially enter the command: setenv optargs ro rootwait fixrtc single init=/bin/sh run bootcmd If you do not enter commands, watchdog restarts the controller.
After downloading (the indicator of the controller lights up red continuously), we obtain a system prompt #
Mount the root filesystem mount -n -o remount,rw /dev/mmcblk0p2 / and we get the message EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
Mount the partition from the configuration backup: mount /dev/mmcblk0p6 /mnt/data and we get the message EXT4-fs (mmcblk0p6): mounted filesystem with ordered data mode. Opts: (null)
Enter passwd and change password. Successful password change: passwd: password updated successfully
Copy the new password to the section from the configuration backup: cp /etc/shadow /mnt/data/etc