Where is the checksome on the 040?
The checksum is located in the same place on all Hitachi drives.
At HEX address >3E7FC --- Four bytes long --- until >3E7FF
When making any changes in the firmware from >6000 until >3E7FB,
you need to set these four bytes to the right checksum, or if you set
it too all ZERO's you will disable the checksum feature.
If you wish to calc the true checksum, use a program called "firmsum".