I tried to upgrade my ASA5520 from V8.2 to V8.3 last week and although the log reported no issues
there obviously were 'cos a some of my NAT mappings stopped completely (!)
I was unabled to complete a fix within my upgrade window so I had to rollback to V8.2.
Is there any web access to a V8.3 configuration checker / upgrade tool
- there used to be something for IOS configurations ?
[And no, it wasn't a memory issues as I'd upgraded to 2 GB RAM before switching versions]