ASDM users are unable to download ASA images from cisco.com using ASDM's built-in Upgrade utility.
Due to some recent changes to cisco.com, users must re-validate their CCO profile, to allow them to download Strong Crypto Software. This validation is currently presented as a pop-up in the user's workflow when attempting to download the software directly on cisco.com, and will appear as follows:
However, this prompting cannot currently be accepted and presented to a user in ASDM. Therefore, when a user who has not manually verified their Strong Encryption Eligibility uses ASDM to attempt to upgrade their ASA, they will receive the following error.
Have the user browse to cisco.com, login and then manually download an ASA image so that they are prompted inline for their Encryption Eligability. Once they accept, this will be stored in their CCO profile, and they will not be asked for this information again. After this, they may re-attempt the ASA software upgrade from within ASDM, and the download will succeed.