I am unable to upgrade the firmware of a protocol 1.0 (MX106) Dynamixel to protocol 2.0 using u2d2 on Wizard 2.0 software. The pop up screen shows nothing after turning on the power.
A few months ago I was able to update the firmware as usual. However, as for test, I have tried with MX28 (1.0) and it upgraded to protocol 2.0. In addition I have also performed self diagnosis for MX106 and everything is okay there. Moreover, I have also followed the DYNAMIXEL Self Check steps DYNAMIXEL | ROBOTIS where I found the step 4 is the issue.
It would be highly appreciated for any kind of help or suggestions. thank you in advance