There's no way. If I'm not mistaken, Runescape requires Flash or Shockwave and actually has system requirements that the PSP can't handle. In other words, it can't be done.
Aha but you are mistaken my friend,a homebrew named "Netfront internet browser v3" it will use all 32ram memory of psp browser memory (64ram for slim)Could that handle the shoxkwave player?
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