depending on what you mean by "latest" firmware.

what ever it means, go to setting > about phone (way at the bottm) > baseband version

if your baseband version is DXJG4 then you are on the latest "official" firmware of "our" region.

if you want to have the latest "official", "leaked", "unoffical" firmware, you can flash it using oding (guide is on 1st page)

it will void your warranty while you are on that firmware, if you want to claim your warranty at later date, you can flash back to dxjg4, as far as i heard, they dont have a clue whether you have flash it or not when sending for service

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Added on October 4, 2010, 10:43 am

seems like your wifi is on AND running most of the time..... and you always open your display....

huh XXJM1?? you got second hand or original from maxis? or just at normal store?

XXJM1 supposed to be US region firmware, so the shop already flash it to your phone, maybe they did it so that the phone could function better, less lag or so, but it does kinda show that the phone already been taking out of the box and been played with

If you click on the sync entry, it says sync the contact on WhatsApp. If you notice, in your phone's contact display option, there's a new entry for WhatsApp, which will automatically linked to your current address book's entries on related people.

I guess if you don't sync them, if any of the new users, which happen to belong in your address book, won't shows up in your WhatsApp. Hence you can't start a conversation with them.

This is just my guess, but you can try it out and let me know. At least this program's contact detecting works much better than Tango's.

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Added on October 4, 2010, 11:46 am
Not to be a wet blanket. Could it be AP unit?

Did you get it off Samsung outlets or just any phone stalls?

Actually PDA gadgets brought these in as AP unit. We cannot know if it actually came from US and has got JM1 by default. Don't be too sure that someone has flashed the firmware yet.

I'm sorry to say, having an opened box for AP set is very normal.

How much you bought it? Did you know your set is AP or Malaysia Orignal? What is the size you get?

Only SME (Samsung Malaysia Electronics) is the official distro. Any other, it is AP.

8GB = confirmed AP.

Yes. Only 16GB.

Whoa! Fring video calling over 3G/HSDPA works pretty well..

I just had a nice video conversation with my friend on Maxis network (I'm on Digi).

P/S Something us SGS users can do that HTC Desire users can't, haha..

browser have its own brigthness, so it can be different when you launch it.

I heard some games have their own brightness as well

Android Gingerbread is expect to release early nexy year, now where is Samsung android 2.2 ??? 

and i doubt we will get Gingerbread update as soon as other mobile, once it is release then...

Will try it tonight. thanks!