v0.2.0 — Online WiFi Battle (Wiimmfi)

v0.2.0 — Online WiFi Battle (Wiimmfi)

Jump! Ultimate Stars now plays online through the public Wiimmfi/Kaeru
service — world-wide and on the same network — with no ROM patching (the
runner redirects the game's DNS). Validated 2026-08-25: room created +
joined with distinct friend codes on one machine, and a successful
cross-network match (this PC ↔ a laptop on a 5G hotspot, no relay).

What's new

• Online WiFi Battle via Wiimmfi. The launcher's Settings now include
  Online mode (Wiimmfi) and a player name field.
• Peer-unicast WFC relay fix — relayed Wiimmfi NATNEG peer frames are
  delivered unicast-to-self, resolving the previous match-completion timeout
  (error 80430).
• New wiilink WFC provider (--wfc-provider wiilink, DNS
  167.235.229.36) for A/B testing against the default Kaeru route.
• Online test guide bundled in docs/ONLINE_TEST.txt (two-PC same-network and
  world-wide procedures).

Known issues

• FPS drops during online play — online battles run at roughly 35 fps
  instead of the offline 60 fps (observed on both machines); being
  investigated.
• Friend code refreshes on relaunch — closing and reopening the app
  regenerates the friend code; going online then shows a UID-mismatch warning
  and prompts an update (which lets you play again, but friends must be
  re-added). Being investigated.
• Intro-video and deck-builder fps drops, and minor stage rendering glitches
  (see the README).

Files

• JUSDecomp-v0.2.0.zip — the self-contained bundle: launcher + game engine
  (recompiled runner) + English Translation mod. You supply your own legally
  dumped Jump Ultimate Stars ROM.