October DealsAmazon USOctober deal check: compare before you payAmazon US: current deals, useful picks and tech finds.Check DealsSlow PC?RecommendedPC slow today? Run a repair scan before it gets worseResolve common Windows issues and optimize system performance.Scan NowOctober DealsAmazon USDeal season is back - check today's better picksAmazon US: current deals, useful picks and tech finds.See Picks×
Skip to content
VGSources
Blog

How to Download and Play Pokémon Radical Red

Radical Red is a .ups patch for a clean Pokémon FireRed 1.0 ROM—not a standalone download. Here’s how to patch it and prepare a compatible emulator.
Length2 min Posted Quest giverVGSources Team
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

Pokémon Radical Red is a patch, not a standalone game download: apply its .ups patch to a clean Pokémon FireRed 1.0 ROM to create a playable .gba file. The project identifies the required base as “1636 Fire Red Squirrels.gba,” but does not provide the base game. You must obtain that base game lawfully yourself.

What you need

  • The Radical Red .ups patch, obtained from the project’s PokéCommunity thread and its update posts.
  • A clean Pokémon FireRed 1.0 base ROM identified by the project as “1636 Fire Red Squirrels.gba.” The thread does not supply this game; do not download it from unauthorized ROM sites.
  • A patching tool that supports .ups files and a Game Boy Advance emulator or compatible hardware for playing the result.

How to patch Radical Red

  1. Open the official project thread. Locate its patch/download instructions and check the update posts for the version you intend to use.
  2. Prepare a clean FireRed 1.0 base ROM matching the project’s “1636 Fire Red Squirrels.gba” identification. Do not use a previously modified ROM.
  3. Apply the Radical Red .ups patch. The thread links an online patcher where you provide the base ROM and choose a Radical Red version. It also names Tsukuyomi or NUPS for Windows and UniPatcher for Android; the thread links an alternative patcher for mobile or Mac.
  4. Save the patched output as a .gba file. If patching fails, first check that the base ROM is the required clean version and that the patch and base file were selected in the correct fields.
  5. Open the resulting .gba file in a compatible emulator, or use compatible real hardware. The project lists mGBA or VBA for Windows, OpenEmu for Mac, myBoy for Android, and gba4iOS for iOS.

Set up saves before playing

Before starting a new game, enable Real Time Clock (RTC) in the emulator and set the save type to flash 128K, following the project’s troubleshooting guidance. If you already created a save with incorrect settings, the project warns that you may need to delete that save and restart after correcting the configuration.

Check the patch version before applying it

The project thread’s title advertises version 4.1, and thread starter soupercell announced “4.1 is out!” on March 22, 2024, directing players to the thread’s page 120. That announcement does not establish whether 4.1 is still the latest version on October 8, 2026. Check the project thread and the live patcher’s version selector immediately before patching. If version 4.1 does not appear in the patcher, the project thread suggests clearing the browser cache.

Emulator compatibility notes

The project thread says Radical Red does not work with Eclipse and lists PizzaBoy, Eclipse, and Twilight Menu as incompatible. It lists mGBA, VBA, OpenEmu, myBoy, and JohnGBA as tested to perform fine. Treat these as the project’s guidance, not a fresh compatibility test; emulator and device updates may affect current behavior. The thread also says real-hardware play is compatible but does not give model-specific setup instructions.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

Quick Recap

SaleBestseller No. 1
Pokémon: Let's Go, Eevee! - Nintendo Switch
Pokémon: Let's Go, Eevee! - Nintendo Switch
Don the role of a Pokémon Trainer as you travel through Kanto; Discover a new species of Pokémon with the Pokémon Lets Go series
$53.87
SaleBestseller No. 2
Pokémon Sword - Nintendo Switch
Pokémon Sword - Nintendo Switch
Catch, battle, and trade Pokémon on an all-new adventure in the Galar region; Choose from three new partner Pokémon and encounter never-before-seen Pokémon
$54.98
Bestseller No. 4
Pokemon Shining Pearl - Nintendo Switch Shining Pearl Edition
Pokemon Shining Pearl - Nintendo Switch Shining Pearl Edition
The Pokémon Shining Pearl game brings new life to this remade classic with added features
$52.49
Rank #4
Pokemon Shining Pearl - Nintendo Switch Shining Pearl Edition
  • Revisit the Sinnoh region from the original Pokémon Pearl Version game and set off to try and become the Champion of the Pokémon League
  • The Pokémon Shining Pearl game brings new life to this remade classic with added features
  • Explore the Grand Underground to dig up items and Pokémon Fossils, build a Secret Base, and more.
  • Test your style and rhythm in a Super Contest Show
  • A reimagined adventure, now for the Nintendo Switch system
Rank #3
Pokémon Scarlet - Nintendo Switch - Standard Edition
  • New Pokémon to Discover - Learn new details about Sprigatito, Fuecoco, and Quaxly—the three Pokémon from which you’ll choose your first partner—along with other wonderful new Pokémon, including the Legendary Pokémon Koraidon and Miraidon!
  • The World of Pokémon Has Evolved - Pokémon Scarlet and Pokémon Violet offer an open-world experience that only the Pokémon series can deliver—one welcoming even to newcomers to the series.​
  • You can experience a new style of adventure, with a world that you’re free to explore at your leisure and not in an order dictated by the story. You will, of course, journey to hone your skills as a Pokémon Trainer, but many more discoveries and stories await you. Meet a variety of people and Pokémon, and adventure in the world of Pokémon the way you want to.
  • A Deeper Experience with Multiplayer* Gameplay - Pokémon Scarlet and Pokémon Violet allow multiplayer gameplay with up to four players.​ Along with series staples, such as trading and battling Pokémon, you will be able to explore the various locations of the region in these games with other players. You can discover new Pokémon and explore unfamiliar areas with your friends and family, opening the door to an adventure more precious and fun than ever!
  • Meet the characters - As one of the main characters, you’ll set off on your adventure. Your outfit will vary depending on whether you play Pokémon Scarlet or Pokémon Violet. Who knows what kind of story awaits you? For the first time in the series, one of two different professors will appear in your game depending on the version you choose to play.
Rank #2
Sale
Pokémon Sword - Nintendo Switch
  • Catch, battle, and trade Pokémon on an all-new adventure in the Galar region
  • Choose from three new partner Pokémon and encounter never-before-seen Pokémon
  • Unravel the mystery behind the Legendary Pokémon Zacian and Zamazenta!
  • Team up with other Trainers to participate in Max Raid Battles***!
  • Battle wild Dynamax Pokémon in Max Raid Battles and try catching them***
#1 Best Overall
Sale
Pokémon: Let's Go, Eevee! - Nintendo Switch
  • Don the role of a Pokémon Trainer as you travel through Kanto
  • Discover a new species of Pokémon with the Pokémon Lets Go series
  • Catch Pokémon in the wild using a gentle throwing motion with either a Joy-Con controller or a Poké Ball Plus accessory, which will light up, vibrate, and make sounds to bring your adventure to life
  • See the world in style by customizing Pikachu and your Trainer with a selection of outfits
  • Connect to Pokémon GO* to transfer caught Kanto-region Pokémon, including Alolan and Shiny forms, as well as the newly discovered Pokémon, Meltan, from that game to this one

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Support on Ko-Fi

Leave a Reply

Your email address will not be published. Required fields are marked *

What’s actually slowing this PC down?

Pick the symptom - the matching free tool is one click away.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

More quests from Patch Notes

  1. How To Create Custom Stickers & Shoutouts In Monster Hunter WildsMonster Hunter WildsBlog20min
  2. How to Get XL Gogoat in Pokemon Legends Z-A (An Extra-Large Gogoat)Pokemon Legends Z-ABlog20min
  3. How to Get Rotting Lightbringer in Diablo 4Diablo 4Blog17min
Recommended PC Tool
Recommended PC Tool
Windows Errors? Fix Them Before They SpreadFree repair scan
Outdated Drivers Are Slowing You DownFree scan - exact matches

Two free Windows tools

One Free Minute Could Fix That PC

Before you go - each of these free tools takes about a minute and tackles what quietly slows a Windows PC down.

Special offer. View Outbyte info, uninstall instructions, EULA, and Privacy Policy.