Accessing all files on Linux Kernel 2.4.20

Hi,
hope this is in the correct category.

I have a very ip controller device that looks like it is using js to build the pages I am able to access and sends some info into a database.
It is running Tomato 1.28 (Linux 2.4.20), Tomato firmware (Linux 2.6.22) Type WAP

I am trying to access the file structure in order to replicate one of the pages so I can inject into another database the same info but I can not see the file structure or files.

The only files I know exists somewhere are favicon and main.js.

I have tried using NMap to scan structure and files using:
nmap -sV -p 80 --script http-enum 172.16.1.102

which returns:

PORT STATE SERVICE VERSION
80/tcp open http
| fingerprint-strings:
| GetRequest:
| HTTP/1.1 200 OK
| Content-Length: 1173
| Content-type: text/html
|_ <?xml version="1.0" encoding="utf-8"?>Web Controller

Web Controller



UserName: <input type=
1 service unrecognized despite returning data. If you know the service/version, please submit the following fingerprint at Nmap Fingerprint Submitter 2.0 :
SF-Port80-TCP:V=7.92%I=7%D=4/10%Time=62527C29%P=i686-pc-windows-windows%r(
SF:GetRequest,4D7,“HTTP/1.1\x20200\x20OK\r\nContent-Length:\x201173\r\nCo
SF:ntent-type:\x20text/html\r\n\r\n<?xml\x20version=“1.0”\x20encoding=
SF:“utf-8”?><!DOCTYPE\x20html\x20PUBLIC\x20”-//WAPFORUM//DTD\x20XHTML
SF:x20Mobile\x201.0//EN"\x20"http://www.wapforum.org/DTD/xhtml-mobile
SF:10.dtd"><link\x20rel=“apple-touch-icon”\x20href=“favicon.ico”\x2
SF:0/><html\x20xmlns=“XHTML namespace”><meta\x20htt
SF:p-equiv=Content-Type\x20content=‘text/html;charset=UTF-8’>Web\x2
SF:0Controller<META\x20HTTP-EQUIV=CacheControl\x20CONTENT=no-cache
SF:><style\x20type=text/css><h1\x20align=center\x20class=st1
SF:>Web\x20Controller



<form\x20method=post\x20action
SF:=ACT_ID_1><p\x20align=center>UserName:\x20<input\x20type=");
MAC Address: 00:66:19:38:80:3A (Huawei Device)

Service detection performed. Please report any incorrect results at Nmap OS/Service Fingerprint and Correction Submission Page .
Nmap done: 1 IP address (1 host up) scanned in 245.03 seconds

When I browse to 172.16.1.102 I get a login page and then it takes me to http://172.16.1.102/ACT_ID_1
An this is where I can not find how or where ACT_ID_1 is etc.

Can anyone point my in a direction where I can interrogate this device in more detail to get files please?

Thanks in advance for any pointers.