Tekken 7 is not native on Switch, but Tekken 7 mods exist for the homebrew Switch via Android/Linux sideloading (complex, not recommended). Instead, play Tekken 7 via cloud streaming:
Yes—Adrenaline (PSP emulator on PS Vita) can run this same ISO perfectly. Some Vita modders have upscaled textures. download tekken 7 psp mod iso
Performance tip: The mod pushes PSP limits. On emulators, limit FPS to 30 (original PSP fighting games were 30fps for 3D matches). Higher framerates may break timing. Tekken 7 is not native on Switch, but
No. You must install Custom Firmware. There is no way to run unsigned ISO files on official firmware. Performance tip: The mod pushes PSP limits
Instead of chasing a fake mod, enjoy what the PSP actually does best:
Downloading any ISO for PSP, modded or not, exists in a legal gray area. While modding a game you legally own is generally protected (in some jurisdictions), downloading a pre-packaged ISO from a random website constitutes piracy. Bandai Namco actively protects its intellectual property. Furthermore, many "mod ISO" sites host copyrighted material without permission, putting you at risk of DMCA notices from your ISP.
The most authentic portable Tekken 7 experience: