hiding SSID isnt invisible, it just doesnt show a name in a wifi scan. you have to connect to it by name; meaning you have to know the name, odds are that 600gle has somehow kluged out that name.

[also] "How do I opt my access point out of Google Location services?"

>>To opt out, change the SSID (name) of your Wi-Fi access point (your wireless network name) so that it ends with "_nomap." For example, if your SSID is "12345," you would change it to "12345_nomap."<<