Didn't find it so if you want, old bootleg with bitrate of 128kbps (sorry for that) :
Rapidshare link : http://rapidshare.com/files/270201439/U2-UNPLUGGED.rar.html
Error
This file is neither allocated to a Premium Account, or a Collector's Account, and can therefore only be downloaded 10 times.
This limit is reached.
To download this file, the uploader either needs to transfer this file into his/her Collector's Account, or upload the file again. The file can later be moved to a Collector's Account. The uploader just needs to click the delete link of the file to get further information.
