ROM Hack Compression LZ77 30?

[matthewn4444]

I am playing around with compressed images with Etrian Odyssey. I am not really too experienced so I don't understand this compression. I know it is LZ77 but its of type 30?

I know that the first two hexadecimals are suppose to determine the type. The other images in the game are type 10 but the battle character portraits are 30.
I was wondering how I can compress the decompressed images back to type 30?

 

[matthewn4444]

Ok I figured it out. It was another compression, RLE. Played around with some programs and came across GBADecmp and I always compressed it with LZ77Comp, so I chose RLComp and the file format looked the same as the original so it wasn't LZ77.