Boot certification error?

[komplex]

My phone is rooted and I tried to unlock the boot loader using:
http://androidforums.com/threads/ho...bootloader-no-flashing-needed-working.861226/

I had previously backed up my laf partition and zero'd it out so I could install TWRP.

Now after flashing slim LP I get a boot certification error.

What am I doing wrong so I can fix this?

 

[bg4m3r]

You didn't need to do any of that. The only reason to wipe the laf is to enable fastboot.

I would follow the brick recovery guide then root and install TWRP using the all things root guide.

 

[komplex]

I used adb to copy my laf.img back so I have download mode back on my device. Should I still use the brick guide or just root it again?

 

[bg4m3r]

I used adb to copy my laf.img back so I have download mode back on my device. Should I still use the brick guide or just root it again?

Is it booting now? If so, just install TWRP and be happy.