Posted by Jayce Ooi as How to
After rooting Samsung Galaxy S II, a yellow triangle will show up at the bottom of Samsung Galaxy S2 Logo during boot up. The simplest way to remove yellow triangle on Samsung Galaxy S II ~ use micro USB Jig. However, USB Jig is not a common gadget that you can find in PC shop (I ordered mine from eBay). How to remove yellow triangle on Samsung Galaxy S2 without USB Jig? Check out below step by step video guide to find out. A long way to go but you can remove the sharp looking yellow triangle…
In short, you need to have stock kernel of the firmware that you are using. Flash it with Odin after you rooted SGS2. The stock kernel will remove the yellow triangle. Then re-flash kernel from CF-Root using CWM Manager. This will bring back ClockworkMod Recovery.
Note – You need a CF-Root that matches your Samsung Galaxy S2 kernel version. And stock kernel that matches your firmware.
Step by Step Guide
Yellow triangle will be removed and you still can access to ClockworkMod Recovery if all the steps are done correctly…