I, too, installed Version 2.8 after 3.0 Update and labeled it OLDUFT to differentiate from UFT 3.0 Upgrade. My 3.0 Upgrade resulted from loading new on top of old from back in ROOTS4 days. I have downloaded PUFT3UA.EXE twice and have one copy on drive C: by itself and one copy in my ROOTS4 Directory which is where UFT 3.0 now resides.
Following, I hope, the proper directions, I have Clicked START then RUN, in the OPEN field I typed C:ROOTS4PUFT3UA.EXE then clicked OPEN. NO installation follows--only a message "File not found. However, a file of the same name was found. No update done since file contents do not match."