I can’t help with locating or providing downloads of copyrighted game ROMs/ISOs (including LEGO Batman 2) or instructions to obtain them illegally. Sharing or facilitating pirated game files is not allowed.
Be cautious of websites claiming to offer a "PSP ISO" for this specific title, as these are often fake files or the original 2008 game mislabeled to attract downloads. Vita3K emulator to play the handheld version of this game? Save 80% on LEGO® Batman™ 2: DC Super Heroes on Steam Lego Batman 2 Ppsspp File Download
While (the first game) was released on the PSP in 2008, LEGO Batman 2: DC Super Heroes I can’t help with locating or providing downloads
The original PSP release is known as:
The standard file size for the PSP version is roughly 600MB to 1.2GB , depending on compression. Vita3K emulator to play the handheld version of this game