Thanks.
We have updated the files to flash the newly-assembled Carnivore2 on a diskless machine with the special utility that is loaded via cassette interface and an image written to the physical start of a CF card. It has been successfully tested on Hitachi H3 and Daewoo CPC-400S already. If you would like to test this utility before it goes into the repository, this would be appreciated:
https://podrezov.com/temp/cf2flash_diskless.zip
Be careful when writing data onto a CF card - don't erase one of your hard disks! Use an alternative CF card for this operation as all its contents will be destroyed.
Modified the utility to dump IDE sectors and address space of any slot - CFTEST. And put it into repository together with the CF2FLASH, into the \Util\diskless folder. Maybe this will help someone trying to flash the newly-built Carnivore2 on a diskless MSX or to diagnose why the cartridge doesn't work...