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Fossil conversion glitch (Japanese): Difference between revisions

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{{Select bugs}}
{{Japan only}}
[[Image:Fossil conversion glitch FE.png|270px|frame|right|The player being asked if they want to give a nickname to ム゙▼イ゙マ゙ゃ (hex:FE) in Japanese Blue.]]
The '''fossil conversion glitch''' (Japanese: 化石変換) is a useful [[select glitch]] in Pocket Monsters Red, Green and Blue (Japanese) that allows the player to change the [[identifier]] of a legitimate fossil Pokémon including [[bp:Kabuto (Pokémon)|Kabuto]], [[bp:Omanyte (Pokémon)|Omanyte]] or [[bp:Aerodactyl (Pokémon)|Aerodactyl]] so that it becomes another Pokémon.
 
All legitimate Pokémon are obtainable through this glitch, as well as many (if not all) [[glitch Pokémon]] from the versions that the glitch is possible.
 
Though the glitch is normally impossible in Yellow and the English versions, a similar glitch can be ported over to those versions with the [[international fossil conversion glitch]].
 
==Side effects==
This glitch has a bad side effect of changing the player's Fly locations, possibly to a value that freezes the game when the Fly screen is opened, but the player can work around this problem with the right 4th move on the switched valid Pokémon.
 
Another side effect of the glitch reported is not being able to use Surf, but this effect doesn't always happen. There is no known fix, but the problem can be worked around with by using the [[ItemDex/RBRGBY:007|????? (07)]] item to surf instead of trying to use it from a Pokémon.
 
==Explanation==
''MainSee articlealso: [[Select glitch]]''.
 
As many select glitches do, the fossil conversion glitch swaps an invalid 'post-6' Pokémon slot with a valid Pokémon (specifically Pokémon #32), putting data into certain unrelated memory addresses based on the data of the Pokémon that was swapped, and putting a glitchy Pokémon that had the data in position 32 in the position where the valid Pokémon was.
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#A Helix Fossil, Dome Fossil or Old Amber in the bag, or stored with the doctor in the Cinnabar Island Pokémon Lab.
#Access to at least [[bp:Cinnabar Island|Cinnabar Island]].
#At least 32 items in the items storage box.
#The valid Pokémon you switch will turn into a glitchy Pokémon, so it is recommended that it isn't valuable.
#Optional: A chosen current experience modulo 256 value on the valid Pokémon you switch, so you get the Pokémon you want.
#Optional: A chosen fourth move on the valid Pokémon you switch, so you don't get a fly locations [[word]] that freezes the game after opening the Fly menu.
 
==Method==
Prepare a Pokémon with a current experience value modulo 256 of the Pokémon of your choice. See [[the [http://glitchcity.info/biglist.htmBig bigHEX listList]] and [https://web.archive.org/web/20180922221118/http://www.geocities.jp/kattempla/pokebug/pokename.html this list (archived)] for more information. If you need to convert from hexadecimal to decimal, you can use Windows Calculator on 'Programmer' mode.
 
Also, so that you don't risk getting Fly locations that freeze the game, it's recommended that the Pokémon has one of the following moves in move 4:
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