Win 7 Home Premium 64 bit SP1 + PSR-800
I had difficulty updating my PSR-800 as well from 1.7 to 1.8 using Win 7 64 bit. I’m posting this here in case it helps anyone else.
I talked to GRE and a tech walked me through things. With the message “no scanner port detected” he was certain that the error was on my end. Although the computer itself said it had the latest version of Win 7 64 bit SP1 (there is no SP 3 for 64 bit, according to Microsoft) I ran Microsoft updates anyway an found that I was 3 updates out of date.
Note that I also have the proxy server option set to “off” as this helped some people, but I don’t know if it helped in this case because it made no difference prior to running Win Update. Note also that I didn’t disable automatic driver checks on my system.
After letting Microsoft Update run all 3 of these updates and reboot, the scanner communicated with the computer in an apparently correct fashion, recognized that it was there, and allowed me to update to v1.8 via EZ Scan.
After restarting the scanner it seems to work as intended. We’ll see if any communications problems develop later down the road but for now I would suggest running Windows Update to make sure your copy of Win 7 is actually where it is supposed to be in terms of the latest updates.