01-26-2020, 06:38 PM
I finally got round to trying it and it worked
Thanks Tim & Kent!
I first connected the Rpi to the downstairs router by placing it nearby so that it calculated the PSK value
Then I shut it down and took out the SD card and put it in my Laptop, and did the below from there, (but I guess I could have used SSH to directly do it on the RPi?)
Then I found the correct bssid using:
Then I edited the /etc/wpa_supplicant/wpa_supplicant.conf file (via terminal with 'sudo nano') to comment out the ssid line and put in a new bssid line, thus
Finally, I reinserted the SD card in the RPi and booted it up in the place in the lounge where it used to connect to the upstairs access point and it instead connected to the downstairs router, just as I wanted!
Thanks again for your great help
Leigh

Thanks Tim & Kent!
I first connected the Rpi to the downstairs router by placing it nearby so that it calculated the PSK value
Then I shut it down and took out the SD card and put it in my Laptop, and did the below from there, (but I guess I could have used SSH to directly do it on the RPi?)
Then I found the correct bssid using:
Code:
sudo iwlist wlp3s0 scan | egrep 'Cell |Quality|ESSID|Frequency'
Then I edited the /etc/wpa_supplicant/wpa_supplicant.conf file (via terminal with 'sudo nano') to comment out the ssid line and put in a new bssid line, thus
Code:
#ssid "MySSID" # old line
bssid 01:23:45:67:89:ab # new line
Finally, I reinserted the SD card in the RPi and booted it up in the place in the lounge where it used to connect to the upstairs access point and it instead connected to the downstairs router, just as I wanted!
Thanks again for your great help
Leigh