@dstackh Hello,
I am also experiencing the same issue as others on this forum with the M5Stack board configuration file size and checksum mismatch. When I manually download the zip file, both the file size and sha256 do not match the provided information in the JSON file. The downloaded file size is 253710190 bytes.
Please investigate this issue, as it is affecting my environment as well as others who have reported the same problem.
Thank you.