The first thing the app does is parse the versions.php file to see what to download, so those files are needed:
GET /ws1080/public/versions.php HTTP/1.1
Host: scanner-update.com
Accept: text/html, */*
Accept-Encoding: identity
User-Agent: Mozilla/3.0 (compatible; WS1080.exe; Version 2.3.0.312)
Authorization: Basic d3MxMDgwUHVibGljOjFMdXMqZXVnODQ=
HTTP/1.1 200 OK
Date: Tue, 07 Apr 2015 23:48:48 GMT
Server: Apache
Vary: Accept-Encoding
Content-Type: text/plain
Cache-Control: proxy-revalidate
Content-length: 450
Connection: Keep-Alive
Age: 0
WS1080.exe.2.3.0.312.WS1080Updater_2.03.exe.Released March 3, 2015
ReleaseNotes.2.0.0.0.appreleasenotes.html
AppRelease.2.0.0.0.appreleasenotes.html
DSP.1.3.dsp_0075.Released March 24, 2014
DSPRelease.0.0.dspreleasenotes.html
CPU.2.6.WS1080e_U2.6.bin March 3, 2015
ReleaseNotes.2.5.cpureleasenotes.html
CPURelease.2.5.cpureleasenotes.html
RRDB.409.dbfilesX.zip.Released Saturday, April 04, 2015
LDB.10.LDB-A.ZIP.Released - January 6, 2012
-----------------------------------------------------------------------------------
GET /pro668/public/versions.php HTTP/1.1
Host: scanner-update.com
Accept: text/html, */*
Accept-Encoding: identity
User-Agent: Mozilla/3.0 (compatible; PRO668.exe; Version 2.2.0.310)
Authorization: Basic cHJvNjY4UHVibGljOjtvZWlnKEBwMDY=
HTTP/1.1 200 OK
Date: Tue, 07 Apr 2015 23:32:28 GMT
Server: Apache
Vary: Accept-Encoding
Content-Type: text/plain
Cache-Control: proxy-revalidate
Content-length: 448
Connection: Keep-Alive
Age: 0
PRO668.exe.2.2.0.310.PRO668Updater_2.02.exe.Released September 16, 2014
ReleaseNotes.2.0.0.0.appreleasenotes.html
AppRelease.2.0.0.0.appreleasenotes.html
DSP.1.3.dsp_0075.Initial Release
DSPRelease.0.0.dspreleasenotes.html
CPU.2.3.PRO668e_F2.3.bin August 20, 2014
ReleaseNotes.2.3.cpureleasenotes.html
CPURelease.2.3.cpureleasenotes.html
RRDB.409.dbfilesX.zip.Released Saturday, April 04, 2015
LDB.10.LDB-A.ZIP.Released - January 6, 2012