Hi, I came across this thread searching on a guide to root my SGS2. I followed the guide closely, but I still ended up stuck at the yellow triangle while booting. Big mistake on my part not taking down the details of my phone. (Actually I did a screenshot on it and I have no access to it now since it's stored in the internal memory) I remember the kernel version being something like I9100DXLPB on android version 4.0.3 I used CF-Root-SGS2_XX_OXX_LPB-v5.2-CWM5-PROPER I did the recovery mode as mentioned but did not work. Any advice on this? Lots of thanks!