Yes.

1) Have the friend type about:support in Location bar and hit Enter. He would get the extensionID in the extensions table there.

2) Then he should locate his profile folder/extensions/extensionID/ folder and compress its contents to a .zip file and send it to you.

3) You rename it to uimap.xpi and drag onto the tools>addons window.

The addons.mozilla.org website had a change in reviewing policy take effect this week. All addons not reviewed by the website Editors team have been disabled and are no longer public. Probably the developer of the addon in question didn't check his email in time, and unfortunately some users like you have problems. If you let the developer know of the problem, he can get the addon public again.

Please let us know whether the steps suggested to retrive the addon from your friend work.

when we type about:support into Location Bar , "The URL is not valid and cannot be loaded." message is coming. So what i need to do.

And how to make developer know about this problem so that the Add on is made public. Please help me.

I m not able to drag uimap.xpi file to add-ons window. I followed the procedure u had told.. please help me to get UI Map add on..

about:support doesn't work before the Firefox 3.6 versions.

Open the zip file or xpi file with a zip utility program such as 7-Zip, then open the install.rdf file, look for em:about or em:updateUrl for information about who created that extension. Or maybe a readme.txt file - not a notmal part of an extension, but I have seen a file like that once or twice out of the hundreds of extensions I have examined over the years. Or maybe there's a clue to wrote that extension in one of the other files in UIMap, by way of comments in the code or the "License Block at the top of the code.