A quick pointer to the ASA software compatability tables.  When checking what version you can update a Cisco ASA to, these tables do prove rather useful.

9.9 to 9.5, Current Models
https://www.cisco.com/c/en/us/td/docs/security/asa/compatibility/asamatrx.html#pgfId-268944

Other release compatability is then provided in the other tables.

Legacy Models are shown in Table 6
https://www.cisco.com/c/en/us/td/docs/security/asa/compatibility/asamatrx.html#pgfId-112283

(Correct at time of publishing, 02/01/18)