Versal ACAP uses the SHA-3 digest to verify the data integrity of Versal device images. If the checksum verification is enabled in the PDI, the PLM calculates the SHA-3 digest and verifies it with the expected SHA-3 digest that is the part of PDI.
The checksum option does not work with A-HWRoT and/or S-HWRoT because these methods already perform data integrity checks.