The Main Image error you are receiving refers to the firmware. Here’s the link to the e200R firmware for you. The first post in the thread has the link for the two required files. I highlighted the details for using Recovery Mode.
Remember! DO NOT ATTEMPT TO FORMAT THE 16MB FORMAT LABELLED PARTITION USING WINDOWS. Simply unzip the two files, and drag them into the partition.
Slide the HOLD switch back to the left when done, and unplug the e200R. The firmware will then install automatically.
Bob :smileyvery-happy: