Download & Install Official Android 2.3.6 Gingerbread Firmware for Samsung Galaxy S2 - JayceOoi.com
Following steps solved the problem for me: 1. When the phone is upgraded to Android 2.3.4 and above (mine is 2.3.6) Kies stops recognizing the phones and USB connection / Serial port connections etc get reset on the phone 2. Even if proper drivers are the...