Connect to your ASA via CLI (SSH or console) and run:
show version | include ASDM
Or:
show asdm image
This will display which ASDM binary is currently configured. asdm-7181-152.bin
Cause: The ASA is still pointing to an old ASDM image or the file is corrupted.
Fix: Re-run asdm image flash:/asdm-7181-152.bin and verify the file checksum: Connect to your ASA via CLI (SSH or
verify flash:/asdm-7181-152.bin
Compare the output MD5/SHA with Cisco’s official hash. Or: show asdm image
To understand the significance of asdm-7181-152.bin, one must decode the file naming convention used by Cisco Systems.
Cause: Default Java heap size too small for larger ASA configurations.
Fix: Edit the .jnlp file or modify Java runtime parameters to increase max heap:
-Xmx1024m