guys,,anyone ever tried updated to Android 4.0 ICS??

i tried yesterday from this link http://androidadvices.com/update-samsung-g...kp2-firmware/3/

follow every steps and got the ICS installed in just a few minutes...
however within minutes later i discovered many issues and bugs

network is shown as No Network even i can call out ...
system is slow..very slow...
hang/force closed when trying to open apss that read the sdcard...
camera went nuts

etc....

stupid of me that i didnt read the comments at the bottom of the page coz i was too excited to upgrade...so suit me right

so with sad heart, i reinstall back to the old fw... but i didnt know /forgot to write down my own version.... currently i just install 2.3.4 .. i think my original fw was 2.3.3 or something... anyone has any ideas??

i'm using stock...so ow to get the latest fw??

wow..so many kernel...do u know what's the version of the stock s2?? like i said, i forgot to write it down...

TQ for ur replies.......