I tried the "What you'll need;
1. Download DooMLoRD's Easy Rooting Toolkit from here; http://forum.xda-developers.com/showthread.php?t=1321582. I've used the version 1, but I think version 2 should also work........"
Sadly, after the whole process follow exactly what is mentioned, it doesn't worked on my "G" version.

Along the message has message "mount: permission denied <are you root?>", "Unable to chmod...", "failed....". until __cleaning, ___rebooting.

But S2 did not rebooting itself, it just stay as it is.........

I shut down the phone manually, then restat manually with USB connected, after restarted, it show, all Done. But there's no Superuser icon at all, indicating rooting failed!

Any step I have missed, can help? Tq in advance.

Finally, have my "G" unit rooted, Yes! However, have some experience to share here:

After fist attempt, as I mention in #665, a lot of "failed", "unable" etc. I tried waveweaver suggestion, install Superuser, success! Strange. Then I install busybox, NO, cannot, bcos it stated no root. More Strange!

Then I re-do the rooting again using version 2, wow, everything goes well without all those "failed, 'unable" messgae, it even rebooting my unit after I hit "any key to continue" which did not happen during the first attempt. Then all busybox, re-boot apk all worked! Proven it is finally rooted.

Previously, I successfully rooted KJ3 using Version 2 of "DooMLoRD's Easy Rooting Toolkit" as per my post #665. After updated firmware to KL3 now, numerous attempt using similar method failed to root my 9100G, I have tried Version 2 and Version 4, both doesn't work. either install Superuser first or without Superuser install, both way also failed, any sifu can give some pointers? Tq in advance.

I have S2 "G" version. I am looking for a Android file explorer that allow me to access network shared folder in my PC through WiFi, can help to recommend?

Hi kldoc, TQVM, I use Windows 7, installed ES File explorer, work like charm, can now streaming video from my PC now.

I saw in S2, non-G forum, someone mentioned they have upgraded to ICS via Samsung authorized centre, is that true? If it is, can we do the same for G version?