Whether you can "connect" to the servers or not, you should still get the notification for the update when available. I downloaded mine by checking repeatedly after it was announced, but my neighbor and friend got the JH7 update OTA and he had reflashed stock and had the "cannot connect" server issue. Once you get the notification, you should be able to just hit "update now" and go through with it.
I hope the update is not through KIES because:
1.) KIES is crappy Samsung software that has created MANY issues with the international version (as per their forums), and my (and your) odds of having a smooth update are much better with OTA
2.) With KIES the consumers are required to have computer access with the software and correct drivers (for those of us that travel a lot, this may or may not be an option)
3.) KIES also requires Windows, 'nuff said (this is not a Windows-bashing forum)
OTA is the only fair way of ensuring that all consumers of the device have equal access to the update