Question [Q] How to flash baseband? (F180L converted to E975 KK stock)

I recently flashed my LG F180L to KK E975 and I rooted it successfully. Now, the only issue I have is how to flash baseband for KK. My LGOG does not have any signal up till now. I tried the same baseband flashing method like what I did last time on Jellybean but it doesn't seem to work on KK. Any suggestions?