Saikyou Toudai Shogi Portable PSP Game translation

[yatsukiko]

Hi, I'm trying to translate a PSP game, and since I never translated a game can someone explain me how to extract the files properly?

I've only tried to extract it with 7zip but it doesn't look like a good way to do it, I had some errors. In the extracted files there were SYSDIR with UPDATE folder (DATA.BIN (12 874 KB( EBOOT.BIN (3 454 KB) PARAM.SFO (2 KB)) and BOOT.BIN (2 499 KB) EBOOT.BIN (2 500 KB) files.
Then USRDIR with audiocodec.prx (4 KB) libatrac3plus.prx (20 KB) sc_sascore.prx (7 KB) tdspt.cdf (135 038 KB)

The main directory also had IC0N.PNG PARAM.SFO PIC1.PNG but i think those files are minor
The game in iso is 181 534 KB