The 1541-II DOS and Kernal images are for the 1541 drive. It adds some bug fixes from the original ROM;s. They cannot be used on 1541-II drives as this model has a bigger single ROM containing both the DOS and Kernal in the same chip.
Take note to insert the adapter in the correct orientation. Pin 1 top left, Pin 24 top right. (Marked on the PCB). You risk damaging the adapter and your Commodore if its not inserted correctly.
Please contact me if you have any queries and I will be only too happy to answer them.
Many thanks for checking out my items.