Do you have Boot9strapinstaller files in the correct location on your SD card? You mean you boot directly into the homebrew launcher when you hold 'Start' when starting the 3DS? You should see GodMode9 and boot9strapinstaller if you've followed the steps correctly. What you're discribing you're still on a9lh and haven't done the steps...I am sorry I forgot to mention it. I already did that actually the guide. But when I press and hold start to power up I am stuck at homebrew luancher and not safeb9s installer like the guide said. And I can't boot into home menu anymore but when I replace boot.3dsx and other files from my backup, it come back to normal as before.
Do I really have a9lh installed? But it boot like menuhax (white, green, blue, red flashing) or something I don't know and boot success rate is not 100% and it took like 25s to boot.