Is it just me or is the GW5000 hard to sync? I set home city to LAX (I'm in San Francisco), I kept trying manual receive but was never able to get it to sync. I found a spot with L3 signal strength, it kept receiving for a good couple of minutes but went to ERR at the end, every single time. The watch was last synced on May 30th 2:02am, probably back in Tokyo.
update: I posted too soon, I changed the city to YVR and tried again and it just synced. Changed it back to LAX and will see if it would sync automatically later. :)