All Star Yakyuken Battle Psp Go Custom

The All Star Yakyuken Battle (also known as All Star Janken Battle) is a series of Japanese titles for the PlayStation Portable (PSP) centered on the traditional game of Yakyuken—a variation of Rock-Paper-Scissors where the loser typically removes a piece of clothing. While originally released as official UMD (Universal Media Disc) titles, the "Custom" aspect refers to the modern preservation and modification of these games on the PSP Go, which lacks a physical disc drive. The Core Game: All Star Yakyuken Battle

Released primarily in Japan, the series includes titles like All Star Yakyuken Portable and its sequel.

Gameplay Mechanics: Players engage in high-stakes Rock-Paper-Scissors matches against various "idols" or digital opponents.

Media Format: These were often released as UMD Movies or interactive videos rather than standard interactive games, featuring high-quality (for the time) FMV (Full Motion Video) sequences of Japanese idols. The "Custom" PSP Go Experience All Star Yakyuken Battle Psp Go Custom

The PSP Go (model N1000) is a unique, slide-screen version of the PSP that relies entirely on digital storage. Because All Star Yakyuken Battle was a physical UMD release, playing it on a PSP Go requires a "Custom" setup involving Custom Firmware (CFW).

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3. Compatibility & Requirements

• Hardware: PSP Go (model-specific controls accounted for); may run on other PSP models with variable UI scaling.
• Software: Custom Firmware (CFW) required to run patched EBOOTs; specific recommended CFW versions listed in release notes.
• Storage: ~200–600 MB depending on optional asset packs selected.
• Safety: Users must own original game media or legal rights to use the ROM; installer assumes user-provided source.

1. Fixing the "Strip" Glitches (Video Plugin)

Some versions of this game suffer from video stuttering on the Go due to memory management. You may need the CWCheat plugin not for cheating, but for bypassing video checks, or simply set your CPU Clock.

• Set CPU Clock: Hold Select to open the VSH Menu.
• Go to CPU CLOCK XMB and CPU CLOCK GAME.
• Set both to 333/166. The Go handles this heat fine, and it ensures the video sequences (the main point of the game) do not stutter or desync.

Step 2: Conversion for PSP Go Efficiency

The PSP Go has limited internal storage (16GB). The All Star Yakyuken Battle (also known as

• Convert your patched ISO to CSO (Compressed ISO) using CISO Compressor. This reduces the file size from 450MB to roughly 280MB without affecting load times noticeably.

Why This Matters

Step 2: Acquiring the Game ISO – Legal and Practical Notes

The All Star Yakyuken Battle ISO (disc image) is your target. The original UMD dump is roughly 320 MB. Since the PSP Go has 16 GB internal storage, you can easily store it alongside dozens of other games.

Legality note: You should only dump this ISO from a UMD you own. However, because the game was region-locked to Japan and never released physically outside, many retro gamers rely on archival sites like Internet Archive (search for “All Star Yakyuken Battle (Japan) ISO”). As a PSP Go owner without a UMD drive, acquiring a digital backup is the only practical method.

File checksum to verify integrity:
CRC32: A1B2C3D4 (example – verify with real DB) X = timing tap

UI & Controls

• Simple control scheme: D-pad / analog for selector, X = timing tap, O = taunt/use item, Square/Triangle = special moves.
• Custom HUD: Confidence bars, beat meter, item slot, and style meter.
• Quick setup screens: 30-second match setup for party flow.

Phase 1: The Prerequisites (The "Go" Specifics)

Because you are on a PSP Go (model N1000), you have two options for playing this game. This game is UMD-only in its original release, so you must have Custom Firmware (CFW) to play it on a Go.

Option A: Custom Firmware (Recommended) This allows you to run ISO files from your internal memory or M2 Memory Stick.

• Firmware: You need to be on 6.61.
• The CFW: Install 6.61 Infinity (ME/LME or PRO). This gives you permanent CFW on the Go.
• The Plugin: You need the NP9660 (Sony NP) ISO driver. The Go handles ISOs differently than older PSPs; this driver usually fixes freezing issues in video-heavy games like Yakyuken.

Option B: PC Emulation (PPSSPP) If you have the ISO but your PSP Go hardware is aging, playing on PPSSPP (PC or Android) offers better video quality and saves your battery. This guide focuses on the PSP Go hardware, but the file preparation is the same.

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