Firmware Update Failed

#1

The firmware update script exited while updating my MG400 Servo firmware. Now the robot is not showing up on ethernet and the indicator light is not turning on. What can I do to fix the robot?

Here is the output of the firmware updater program when I try to run it after rebooting the robot.

[root@dobot fireware]# ./firm_update eth0 1 MagicianPro_Servo_FOE_V2.0.7.0.bin
SOEM (Simple Open EtherCAT Master)
Firmware update example
Starting firmware update example
ec_init on eth0 succeeded.
1 slaves found and configured.
Request init state for slave 1
Slave 1 state to INIT.
 SM0 A:1800 L: 512 F:00010026
 SM1 A:1a30 L: 512 F:00010022
Request BOOT state for slave 1
Slave 1 state to NOT BOOT.
line[135],status :1,hope:1
line[143],status :1,hope:3
SOEM (Simple Open EtherCAT Master)
line[135],status :1,hope:1
line[143],status :1,hope:3
line[135],status :1,hope:1
line[143],status :1,hope:3
line[135],status :1,hope:1
line[143],status :1,hope:3
line[135],status :1,hope:1
line[143],status :1,hope:3

Is there a service manual available for the MG400? If I could manually set the STM32 microcontroller into boot mode the firmware updater might succeed.

#2

A few people, including myself have had issues with the firmware updater. I suggest you reach out to your reseller to connect you with support, or to contact support via the email on their webpage.

#3

They are very slow in response now a day! I just got 2 MG400 bricked and project due. Frustrating!

#4

We had this same issue. We reached out to our distributor and they were able to provide a burn-in cable to write to the servo control board directly and unbrick them.

N.B.: in the instructions that Dobot provided they show the control board removed (and a different board version than we had) but you need the system to be plugged in and turned on for the burn-in cable to connect. You can reach the connector with the power board attached by running the near the cut-out for J1.