Upload Software Images for Devices in Install Mode
The Image Repository page might show a software image as being in Install Mode. When a device is in Install Mode, Cisco DNA Center is unable to upload its software image directly from the device. When a device is in install mode, you must first manually upload the software image to the Cisco DNA Center repository before marking the image as golden, as shown in the following steps.
Reference:
dna-center/1-2-10/user_guide/b_cisco_dna_center_ug_1_2_10/
b_dnac_ug_1_2_10_chapter_0100.html