Best answer:

Answer by Kasey C
“Doing it manually” usually means downloading a mod ROM and install that. That would come with anything, so you can go from any version to any version.

—
Kasey C, PC guru since Apple II days
Why You Can’t Use iPhone with Verizon

http://hubpages.com/t/1a72e9

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Jump Trials’ protagonist seems to take design cues from Mr. Game & Watch, but the rest of the game sadly lacks any of the charm required to justify that reference. Visually, the world is sparse and underwhelming, consisting of a small set of tiles in heavy rotation in front of a featureless blue (or yellow, in Challenge Mode) backdrop. It’s entirely functional, but a little visual variety would have gone a long way towards giving the game some much-needed personality. The closest Jump Trials comes to achieving this is with a post-World victory rainbow, but other than that, the graphical presentation feels like a placeholder for something else. The wind effect does look nice, though.

There’s not a lot of room for music in the 10-second levels, so the single backing track gets repetitive very quickly. The “hurry-up” music almost ironically kicks in at the halfway point of the timer (as if you didn’t need to hurry for the first five seconds!), and the near-constant back-and-forth between the two tracks feels remarkably like listening to someone choose a cell-phone ring tone. The menu music, however, is fantastic, with lovely little loops of lo-fi lounge grooves jazzing up the level select screens.