Cisco ASA 5508 and ASDM not loading....

[Lummygbola]

I purchased an ASA 5508 from AMAZON but unfortunately seems to be out of the warranty period.  All I am trying to manage the appliance by installing ASDM and it has proven to be a classic nightmare. I have configured the unit as documented and connected GigaEhernet1/1 to the internet and GigaEhernet1/2 as the management interface to try and download the ASDM application without any luck. Downloaded all the JRE editions including the latest versions, changed browser and all but no luck. 

Connected to https://192.168.1.1/admin and I get Error 404 - The requested URL /admin/public/index.html was not found on this server. What else can I do? Except to get a service contract with Cisco TAC.   Any suggestions or tip from any one here would help

[MHM Cisco World]

use console and check the ssl config in ASA 

[Lummygbola]

ssl config seems fine. I think the firewal is looking for an index.html file that should be the page that load the ASDM download links and welcome page.  Shd this be in the firewall's flash ? See below: there is no HTML fil loaded on the firewal

[MHM Cisco World]

as I see from photo you share 
you use ASA 9.16.4.2 which compatible with ASDM 7.16(1.150) but you use 7.27(1.152)
did you bug this ASA with both these files ? or you later download it