No. I didn't have any problem when I changed the MCUI also have MTCE_XRC_V3.01. I'm trying to upgrade to MTCE_HA_V3.78. In step 2 I inserted the flash drive with dmcu.img and dmcu.cfg . I click update MCU, the system says that there will be a reboot for the update and after it turns off and I see a black screen with no signs of life. I waited about 10 minutes, then forcibly rebooted. MCU has not been updated. I tried to do the same by throwing only dmcu.img on the USB flash drive. The result is the same. Have you encountered such a problem?