Hello. I have a Cisco 5510 FW that I am unable to access the ASDM on. I'm new to this company so I'm trying to figure out what is what and what is accessible. At first I wasn't able to get anything to come up when going to the IP address in a browser, but after enabling HTTP and allowing my subnet access to HTTP I get a certificate prompt.

From there, I receive the following:

404 Not Found

The requested URL /admin/public/index.html was not found on this server.

Below is my ASDM image as well as a show ver from the FW:

FIREWALL-ASA# show asdm image
Device Manager image file, disk0:/asdm-625.bin
FIREWALL-ASA#
FIREWALL-ASA#
FIREWALL-ASA# show ver

Cisco Adaptive Security Appliance Software Version 8.2(2)

Compiled on Mon 11-Jan-10 14:19 by builders
System image file is "disk0:/asa822-k8.bin"
Config file at boot was "startup-config"

FIREWALL-ASA up 16 days 0 hours

Hardware:   ASA5510, 1024 MB RAM, CPU Pentium 4 Celeron 1600 MHz
Internal ATA Compact Flash, 256MB
BIOS Flash Firmware Hub @ 0xffe00000, 1024KB

Encryption hardware device : Cisco ASA-55x0 on-board accelerator (revision 0x0)
                             Boot microcode   : CN1000-MC-BOOT-2.00
                             SSL/IKE microcode: CNLite-MC-SSLm-PLUS-2.03
                             IPSec microcode  : CNlite-MC-IPSECm-MAIN-2.04
 0: Ext: Ethernet0/0         : address is 5475.d0d4.7758, irq 9
 1: Ext: Ethernet0/1         : address is 5475.d0d4.7759, irq 9
 2: Ext: Ethernet0/2         : address is 5475.d0d4.775a, irq 9
 3: Ext: Ethernet0/3         : address is 5475.d0d4.775b, irq 9
 4: Ext: Management0/0       : address is 5475.d0d4.7757, irq 11
 5: Int: Not used            : irq 11
 6: Int: Not used            : irq 5

Licensed features for this platform:
Maximum Physical Interfaces    : Unlimited
Maximum VLANs                  : 50
Inside Hosts                   : Unlimited
Failover                       : Disabled
VPN-DES                        : Enabled
VPN-3DES-AES                   : Enabled
Security Contexts              : 0
GTP/GPRS                       : Disabled
SSL VPN Peers                  : 2
Total VPN Peers                : 250
Shared License                 : Disabled
AnyConnect for Mobile          : Disabled
AnyConnect for Cisco VPN Phone : Disabled
AnyConnect Essentials          : Disabled
Advanced Endpoint Assessment   : Disabled
UC Phone Proxy Sessions        : 2
Total UC Proxy Sessions        : 2
Botnet Traffic Filter          : Disabled

This platform has a Base license.

Serial Number: xxxxxxxxxxxx
Running Activation Key: 0xbd3ff55d 0x98c0d6bd 0xfcb14dbc 0x82bc8858 0xc61f04ad
Configuration register is 0x1
Configuration last modified by enable_15 at 06:53:04.759 UTC Thu Sep 4 2014
FIREWALL-ASA#
FIREWALL-ASA#