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…

Prerequisites

  • Odin3
  • CF-Root
  • Stock kernel

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

  1. Power on Samsung Galaxy S2.
  2. Connect USB cable to your phone.
  3. Download the correct CF-Root here.
  4. At PC, use 7-Zip to extract zImage (zip – tar – zImage) then copy it to sdcard.
  5. Download the correct stock kernel here.
  6. Extract stock kernel .tar file that you downloaded to Kernel folder.
  7. Remove USB cable from your phone.
  8. Then power off your phone.
  9. Press and hold down Volume Down + Home + Power buttons at the same time.
  10. Press Volume Up button when warning prompt.
  11. Odin download mode will be loaded.
  12. Connect USB cable to your phone.
  13. Bring up Odin3.
  14. Click on PDA.
  15. Select the .tar at Kernel folder.
  16. Click Start then.
  17. Remove USB cable from your phone when you see green PASS! at Odin3.
  18. After Android loaded, bring up CWM Manager.
  19. Select Flash kernel ~ Flash a kernel.
  20. Select zImage then click Flash.
  21. That’s all.

Yellow triangle will be removed and you still can access to ClockworkMod Recovery if all the steps are done correctly…

Download Odin3 v1.85 here.
Download CF-Root here.
Download official Samsung Galaxy S2 firmware and stock kernel here.

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