– The typical Cisco ASA image file naming convention is something like asa9-14-4-smp-k8.bin for the 9.14.4 release with SMP (symmetric multiprocessing) and K8 (export-controlled crypto). Your string asa9144smpk8bin lacks the hyphens/dots and may be a typo.
What is this part inside (e.g., a server, a medical machine, a PLC)? asa9144smpk8bin
Large configuration sizes can sometimes prevent standby units from joining a failover pair. – The typical Cisco ASA image file naming