Link Fix Updated - Msxblmultiplayer

The original MSX Blasto multiplayer mode suffered from three critical failure points:

The “link fix updated” refers to a revised network middleware layer that replaces the legacy direct‑socket model with a lightweight relay + delta‑compression system. msxblmultiplayer link fix updated

Do not use old patches from 2018. They will fail. You need the MSXBMultiplayer link fix updated as of April 2026. The original MSX Blasto multiplayer mode suffered from

The current stable version is v2.5.2 (Community Edition). You can find it on the official Battlefront Community Discord or the GitHub repository "SWBFSpyII". The “link fix updated” refers to a revised

[LINK] Relay handshake OK – public IP 203.0.113.45:56789
[LINK] Peer found via relay, RTT = 47ms
[SYNC] Skew corrected: -23ms → +2ms
[DELTA] Packet size: 86 bytes (was 1024)

[Multiplayer]
link_mode = relay              # options: direct, relay, auto
relay_url = wss://relay.msxblasto.com/v2/link
stun_server = stun.l.google.com:19302
sync_interval_ms = 10000
delta_compression = true
keepalive_interval_s = 5

If you have two working MSX machines, don't use a standard USB-to-serial adapter. Instead, build or buy a Level Shifter Cable.

Pro Tip: Search for "MSX RS-232C null modem cable with level shifter" on retro forums. A few small shops (like RetroCables UK) now sell pre-made versions for ~€25.

Fix: The updated fix now supports LAN over Internet via ZeroTier or Radmin VPN. If you are hosting, run the MSXBMultiplayer_Server_Launcher.exe from the fix package and select "Public (UPnP)". Most routers automatically forward the ports.