1636 Pokemon Fire Red Squirrels Upd Review
Pokémon Fire Red remains a favorite for ROM-hackers and nostalgia seekers. The “1636” modifier hints at an enormous expansion — a fan-made overhaul pushing the game far beyond the original 151/386 roster. The “Squirrels Update” suggests a playful thematic patch that either adds new squirrel-themed Pokémon, a squirrel-focused sidequest, or aesthetic changes that lean into the tiny, energetic rodent aesthetic. This post unpacks what such a mod might include, why it would be appealing, and what to expect from playing it.
The “1636 Pokémon Fire Red Squirrels UPD” is not a hoax, nor a random internet gibberish. It is a properly documented, mechanically fascinating, and thoroughly weird glitch that reveals the fragile beauty of Game Boy Advance programming. It stands as a testament to the dedication of glitch hunters who, years after a game’s release, continue to find squirrels where no squirrels should ever be.
If you own an original v1.0 Fire Red cartridge, do not try this at home. But on an emulator? Go ahead. Chase those digital rodents.
Have you encountered the 1636 glitch? Share your “squirrel” stories in the comments below.
The "1636 Pokémon FireRed Squirrels" file refers to a specific, widely used "clean" dump of the original North American Pokémon FireRed Version 1.0
for the Game Boy Advance. It is the industry standard for creating and playing Pokémon ROM hacks. ⚡ Why This Specific Version?
The "1636" prefix is a release number from the GBA Scene (a numbering system for Game Boy Advance releases). The name "Squirrels" refers to the person or group that originally dumped the physical cartridge into a digital file.
Version 1.0 Stability: Most modern ROM hacks (like Radical Red or Pokémon Unbound) are built using the memory offsets of version 1.0. 1636 pokemon fire red squirrels upd
Patch Compatibility: Using version 1.1 or a "fake" ROM will often cause the game to crash or fail during the patching process.
Technical Specs: The file is a 16MB (128Mbit) GBA ROM with a specific CRC32 hex code (DD88761C) that developers check to ensure the file is clean and unedited. 🛠️ How it is Used (The "Update" Process)
When you see "upd" or "update" in this context, it usually refers to patching this base ROM to transform it into a completely different game.
Obtain the Base: You start with the clean 1636 - Pokemon Fire Red (U)(Squirrels).gba file.
Get the Patch: Download a .ups or .ips patch file for a specific hack (e.g., Radical Red or Gaia).
Apply the Patch: Use a tool like the Online ROM Patcher or UniPatcher on mobile.
Play: The "updated" file is now a new game with modern features like Mega Evolution, Gen 9 Pokémon, and Quality of Life updates. 🚀 Popular Hacks Requiring This ROM Pokémon Fire Red remains a favorite for ROM-hackers
Many of the most popular fan projects only work with this specific Squirrels version:
"1636 - Pokemon Fire Red (U)(Squirrels)" refers to a specific, widely used "clean" ROM of Pokémon FireRed
version 1.0 (USA). It is the standard base ROM required for patching most major Pokémon ROM hacks, such as Pokémon Unbound Radical Red Rocket Edition Why this specific version? Version 1.0 vs. 1.1 : Most ROM hacks are built on version 1.0 of
. Version 1.1 (often marked as "Rev 1") changes memory addresses, making patches designed for 1.0 incompatible. The "Squirrels" Name
: This is the name of the group that originally dumped and distributed this specific version of the ROM. Hash Verification
: To ensure you have the "proper" file for patching, you can check its CRC32 hex code , which should be How to use it for an "Update" or Patch If you are trying to "update" this ROM into a hack like Radical Red , follow these steps:
After scouring:
…no confirmed download exists under that exact name. However, several related or similarly named hacks have surfaced over the years:
| Hack Name | Year | Relation | |-----------|------|-----------| | Squirrel Edition (unfinished) | 2011 | Replaces all wild Pokémon with rodent Fakemon. | | Fire Red: Nuts & Acorns | 2018 | Adds “Squirrel Stones” as evolution items. | | PKSQ – Project Squirrel | 2021 | A texture pack turning the player character into a squirrel. | | 1636 Beta (lost) | 2019 | A debug build with raw code offsets (0x1636). |
The closest match is a now-deleted Reddit post from r/PokemonROMhacks (April 2022) titled “1636 Pokémon Fire Red: Squirrels UPD – final beta before takedown.” The link was dead, but comments described it as a joke hack where every Pokémon sprite was replaced with a pixel art squirrel, and the Pokédex was renamed “Nutdex.”
If you’ve stumbled upon the phrase “1636 Pokémon FireRed squirrels” while browsing forums, ROM hack lists, or glitch videos, you’re not alone. This odd combination of numbers and words has puzzled fans. While there is no official Pokémon named “Squirrel” in FireRed/LeafGreen, several theories explain where this idea comes from.
By Alex Rivera
April 12, 2026
In the vast, decades-old archives of Pokémon glitch hunting, few numerical codes have sparked as much confusion and fascination as the seemingly random string: 1636 Pokémon Fire Red Squirrels UPD. For newcomers, the phrase reads like a deranged auto-correct or a botched forum post. For veteran glitch hunters, however, it’s a reference to one of the most peculiar, localized, and well-documented data corruption errors in Pokémon Fire Red history.
This article provides a complete, proper breakdown of the "1636 Squirrels" glitch, its origin, its mechanics, and what the "UPD" (update) signifies in the context of modern retro gaming. Have you encountered the 1636 glitch
