Failed to add a package to MiKTeX

I try to add a package (foiltex) to my MiKTeX Installation – without success so far.

I have run the required latex foiltex.ins and latex foiltex.dtx.

What I have tried:

1. Added foiltex to installationDirtexlatex where all the other packages are, then run initexmf --update-fndb. The logfile initexmf.log shows that the directory is parsed:

   initexmf – Creating fndb for user root directory (installationDir)…

   But foiltex is not loaded (checked with mpm --verify=foiltex).

2. Added another root directory C:tempMiKTeX, put foiltex into C:tempMiKTeXtexlatex, then run initexmf --update-fndb. Again, the log shows that this new directory is parsed. foiltex is still not there.

3. Executed mpm --install=foiltex. Log file says:

   FATAL mpmcli – The requested package is unknown.

What else can I try to add foiltex to my MiKTeX installation? (Unfortunately my box is behind a firewall and has no access to all the LaTeX repositiories on the internet…)