So I just downloaded that and it won’t read my radio, keeps saying check model name and market code. Same problem I was having with the 89D software.
Where did you download it from?
Was it a legit copy purchased from Kenwood, or was it a bootleg copy found on the internet?
There are different market codes for radios. The software serial numbers used for activation will tell the software which market to use.
If they don't match, you can get this error.
The easy way to fix this is to get the correct software serial number from Kenwood or a Kenwood dealer.
Short of that, you are going to need to do some searching to understand the differences in how Kenwood does their serial number software activation for different market codes.