An S-Frag is a Standard chip, it has the gray color for the chip. But I don't know what a safrag is or even if it is something in the game.
Amazon.
The passcode is 11922911.
you can't
455
you have to buy the game
11922911
it unlocks old computer
it goes to a memory flashback
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Check Yai's message board.
Go to Megaman's custom screen and go right
I do not think you can, as there would be inconsistencies with the library.