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Game Boy Advance GBA Game Cheats
MegaMan Battle Network
Also known as: Battle Network RockMan EXE
Alt. name(s): Mega Man Battle Network, Battle Network Rock Man EXE 

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Courtesy of: gamefaqs.com

GENERAL HINTS AND PLAYING TIPS
Anubis chip: You do not need to complete the game to get the Anubis battle chip. You can also get it in the chip trader.
Popup chip: In a few areas on the net you will find the Popup enemies, who resemble some sort of dog. They only have 10 HP, but every time you hit one, it will drop into its hole and pop out of another one. The more HP taken away, the faster it will go back into its hole. It is virtually impossible to defeat by the time it has at most 3 HP remaining, because when it goes into its hole, it will escape. An easy way to defeat it is to use the Anubis chip. You have to have completed the game at least once so you can get the Anubis chip from Pharoman. When you fight the Popup and have an Anubis chip to use, just set it down. The Anubis continuously depletes the enemy's HP (even multiple at a time). The Popup will automatically get hurt when it comes out of the hole. After it is defeated, you should get the rare Popup chip, which makes you invincible for a turn when not attacking (same as the Dropdown).
Get rare or new chips: When you get to the part of the game where the Higsby guy from the school incident has a business as a chip salesman (in front of the gates of the school), go inside and save your game next to the chip trading machines (the ones that resemble candy or mini-toy dispensers in real stores). You can now freely trade 3 or 10 chips for another one, depending on which machine you use. If you do not get a chip you want, turn off the game, turn it back on, and resume from your save. Repeat the chip trade until you get the one you want, or get a rare one.
Adding chips to your folder: Press A on any chip on your sack, then press Left and exchange the chip.
Challenge Arena: Get the first memo and at the end of the first WWW site, take a right before the next red W. Continue until you reach another access. Continue and talk to the person at an intersection. He should tell you some strange information, but you will see a door with a "?" on it. The next one will have a different challenge, and then another. Along the way there are web merchants. Once you get through, there should be two men that are almost parallel, this is the Challenge Arena.
Power Plant: Once the subway starts working and you go into the second town, on the first block go up and turn left (do not cross any sections). There are various sections to stop (save after every battle). To get into the power plant finish the cross section and go to the park in your town. You will meet your dad who invites you to a party with mom. Once you are there, the power goes out. You will exit the dining room and go down the laundry chute.
Encountering Bass: To encounter Bass from the classic Mega Man games, get 174 battle chips in your library. This is all the chips except for the one he drops, which is the Life Aura. Then, go to Internet area 16 where the two men are standing almost parallel. Walk around (it may take a while) and sooner or later you will encounter Bass. Put all the Recover 300 chips you have in his folder, as he is very difficult.
Easy S busting level: Use a Navi chip. When you use it, the background goes black and time freezes. When your enemy is destroyed, it should say S Busting Level, and your time will be in the milliseconds.
Mini-quest: After you defeat Ice Man, go to the Waterworks. In the back of the room in the northwest corner is a man next to a soda machine. Talk to him and he will say that the machine is broken, and for you to jack in to fix it. Do what he says and talk to the purple robot in the middle to face three viruses. Defeat them and jack out. Talk to the man and he will give you a Repair G chip.
Muramasa: Put at least three Navi chips, five Cannons, and twelve of your choice and you should get that chip.
Program Advance 2X Hero: To get the Program Advance 2X Hero that does 400 damage use FighterSword B, KnightSword B, HeroSword B, and Protoman3 B in battle. Mega Man and Proto Man will be on a panel, charge their weapons, fire, and hit all enemy panels. Try using this on Bass.
Better chance of encountering a Net Navi: When you are on the Internet at Lans or someone else's computer looking for a Net Navi, fight the same enemies in the exact same locations on the 3 x 3 panel three times in a row. You should encounter a Navi in the next battle 70% percent of the time.
Advances: Advances are when you pick a particular combo of chips. You can learn two of them by talking to the kid besides the Numberman sign in Higsby's Chip Shop and the little girl in Block 3 of Dentown, in front of the Print Shop. Advances can be three of the same chip in alphabetical order. This usually gives a "z ?????" which lets you use your chip as many times as possible in five seconds and activates an Invisi1 type move.
Guts Shot Advance: Use Met Guard G, a Dash G, then Guts Man3 G in that order. Gutsman will appear on the panel, grab Megaman and throw him at the enemy in front of him. This takes off 500 damage.
School network passwords: Door 1: 09.. Door 2: 30.. Door 3: Random.. Door 4: Random.. Door 5: 15.. Door 6: Random.. Door 7: Random, but also requires Teacher's password.

PROGRAM ADVANCE
This program mixes different chips and makes a stronger one. Note: It will not harm the game.
Zeta-Cannon 1: Cannon ABC or Cannon BCD
Z-Cannon 2: Hi Cannon GHJ or Hi Cannon HIJ
Z-Cannon 3: M-Cannon KLM or M-cannon LMN
Z-Arrow: Tri-Arrow CDE
O-Cannon 1: Cannon ABCDE
O-Cannon 2: Hi-Cannon HIJKL
O-Cannon 3: M-Cannon KLMNO
Lifesword1: Sword A, Widesword A, Longsword A (in that order)
Lifesword3: Fireblade F, Aquablade F, ElectricbladeF (in that order)
Ultrabomb: Lilbomb O, Crosbomb O, and Bigbomb O (in that order)

GETTING NAVI CHIPS METHODS
Method 1: Defeat Woodman, Sharkman, Skullman, Protoman, Fireman, Elecman, Numberman, Gutsman, Iceman and Colorman over busting level 5 to receive their own battle chip with one of their most powerful attacks.
Method 2: You can actually get Navi chips in the trading machines in Higsby's shop. For example, you can receive a Roll3, Woodman1, Protoman2, Pharoahman1 or Sharkman2 chip just by putting in chips. However it seems that it will only give these chips if you have them already.
Method 3: After you defeat a Navi and get their chip once, fight it again later. If you defeat it without taking any damage, you should get either an extra of their chip or a stronger version of their chip.
Method 4: If you want to get Navi or any other chips, go to Higsby's Shop. Go to the Blue Trader and save. Then, put in 10. If you get the one you want, leave, save, and try for another one. If not, reset the game and try again.

NAVI MASTER
Finding the Navi Master takes quite some time. Below is the list of clues and where they lead you. Note: They may not be in order.
The first clue leads you to the board outside the Marine Harbor Station (the restaurant board).
"The jug past the four cedars" leads you to Okuden Dam. Talk to the Official on the dead end.
"Big Bird Brain" leads you to the cockpit of the plane. Check the monitor near the door.
"Place that overlooks many cultures" leads you to the top of Netopia castle (where Knightman was located). Again, talk to the official.
"Coffin of things cast away by humans" leads you to one of the dumpsters in the alley in Netopia.
"Cyber forest, object of treasury" leads you to where Chnge. Bat was located. Talk to the Navi.
"A thing that plays a tune" leads you to Mayl's piano. Jack in and talk to the purple Navi in one of the corners.
"My natural parents" leads you to Lan's dad. Talk to him and the battle begins.
You will have to battle the V2 of the Navis you battle by talking to their operators. They are as follows, again not in order: Gutsman, Gateman, Snakeman, Toadman, Thunderman, and Protoman.

DEFEATING HINTS AND TIPS
Bowl Man V4: Use Ice stage to freeze the ground in order to increase electrical attacks. Then, use Sensor 3 in the middle line which should hit Bowl Man several times before it fades. Then, use Plant Man V3 or V4. He should be dead or almost dead at least.
Protoman: Get Bstr sword and press A to activate it. Every time Protoman comes close to you, press B.
Shark Man: When fighting Shark Man, he will hide under the tiles on his side. His shark fins will be moving up and down their columns. To find him, use an attack that damages the entire enemy area, such as Ice Man. The attack will hit all of the fins and do damage to whichever one is Shark Man.
Wood Man: When fighting Wood Man, he will sometimes grow a tree. After a few seconds, the tree will drop an apple and disappear. If Wood Man lands on the apple, he will regenerate health. Before he absorbs the apple, if it is on the column closest to you, use a Steal chip so that the apple is on your side of the screen. If you absorb the apple, you will gain health.

Submitted by: CheatBookJon, AJ, Aziz K, Mo Avery, Falconx82 and Federico Dyna

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