diff --git a/emulators/dolphin-mmjr.yml b/emulators/dolphin-mmjr.yml
index d9c5a874..52189e58 100644
--- a/emulators/dolphin-mmjr.yml
+++ b/emulators/dolphin-mmjr.yml
@@ -83,13 +83,13 @@ files:
     system: nintendo-gamecube
     required: false
     hle_fallback: true
-    region: [north-america]
+    region: [north-america, latin-america]
     size: 2097152
     crc32: ["6dac1f2a", "d5e6feea", "86573808", "667d0b64"]
     validation: [crc32]
     on_mismatch: warn
     description: "GameCube boot ROM, NTSC-U directory"
-    note: "Read whole into a 2 MiB buffer with no size check, then descrambled from 0x100 for 0x1afe00 bytes. The crc32 gate runs when the IPL itself is booted, and the four non-PAL dumps pass here without complaint."
+    note: "Read whole into a 2 MiB buffer with no size check, then descrambled from 0x100 for 0x1afe00 bytes. The crc32 gate runs when the IPL itself is booted, and the four non-PAL dumps pass here without complaint. Discs with the Brazilian country code B map to NTSC-U, so Latin America reads this directory too (Source/Core/DiscIO/Enums.cpp:184-186)."
     source_ref: "source Source/Core/Core/ConfigManager.cpp:861-868, source Source/Core/Core/HW/EXI/EXI_DeviceIPL.cpp:99-112, source Source/Core/Core/HW/EXI/EXI_DeviceIPL.h:43, source Source/Core/Core/Boot/Boot.cpp:296-330"
 
   - name: IPL.bin
diff --git a/emulators/dolphin-mmjr2.yml b/emulators/dolphin-mmjr2.yml
index fcce0ee4..82acc01a 100644
--- a/emulators/dolphin-mmjr2.yml
+++ b/emulators/dolphin-mmjr2.yml
@@ -119,13 +119,13 @@ files:
     system: nintendo-gamecube
     required: false
     hle_fallback: true
-    region: [north-america]
+    region: [north-america, latin-america]
     size: 2097152
     crc32: ["6dac1f2a", "d5e6feea", "86573808", "667d0b64"]
     validation: [crc32]
     on_mismatch: warn
     description: "GameCube boot ROM, NTSC-U directory"
-    note: "Read whole into a 2 MiB buffer with no size check, then descrambled from 0x100 for 0x1afe00 bytes. The crc32 gate runs when the IPL itself is booted and only warns: the four non-PAL dumps, the Brazilian MPAL one included, pass here without complaint."
+    note: "Read whole into a 2 MiB buffer with no size check, then descrambled from 0x100 for 0x1afe00 bytes. The crc32 gate runs when the IPL itself is booted and only warns: the four non-PAL dumps, the Brazilian MPAL one included, pass here without complaint. Discs with the Brazilian country code B and SYSCONF countries of the Americas map to NTSC-U, so Latin America reads this directory too (Source/Core/DiscIO/Enums.cpp:172-173, 223-225)."
     source_ref: "source Source/Core/Core/Config/MainSettings.cpp:594-600, source Source/Core/Core/HW/EXI/EXI_DeviceIPL.cpp:105-113, source Source/Core/Core/HW/EXI/EXI_DeviceIPL.h:43, upstream Source/Core/Core/Boot/Boot.cpp:408-442, source Source/Core/Core/Boot/Boot.cpp:444-449"
 
   - name: IPL.bin
diff --git a/emulators/dolphin.yml b/emulators/dolphin.yml
index f7a1a468..5c80a76a 100644
--- a/emulators/dolphin.yml
+++ b/emulators/dolphin.yml
@@ -41,11 +41,11 @@ files:
     path: "dolphin-emu/Sys/GC/USA/IPL.bin"
     standalone_path: "GC/USA/IPL.bin"
     system: nintendo-gamecube
-    region: [north-america]
+    region: [north-america, latin-america]
     size: 2097152
     required: false
     hle_fallback: true
-    note: "GameCube NTSC-U boot ROM. HLE available but real IPL needed for GC menu boot and accurate fonts"
+    note: "GameCube NTSC-U boot ROM. HLE available but real IPL needed for GC menu boot and accurate fonts. Discs with the Brazilian country code B and SYSCONF countries of the Americas map to NTSC-U, so Latin America reads this directory too (Source/Core/DiscIO/Enums.cpp:198-199, 249-251)."
     source_ref: "upstream Source/Core/Common/CommonPaths.h:139, source Source/Core/Core/HW/EXI/EXI_DeviceIPL.cpp:108"
 
   - name: "IPL.bin"
diff --git a/emulators/ishiiruka.yml b/emulators/ishiiruka.yml
index fed1148c..225ccc05 100644
--- a/emulators/ishiiruka.yml
+++ b/emulators/ishiiruka.yml
@@ -37,11 +37,11 @@ files:
     path: "dolphin-emu/Sys/GC/USA/IPL.bin"
     standalone_path: "GC/USA/IPL.bin"
     system: nintendo-gamecube
-    region: [north-america]
+    region: [north-america, latin-america]
     size: 2097152
     required: false
     hle_fallback: true
-    note: "GameCube NTSC-U boot ROM. HLE available but real IPL needed for GC menu boot and accurate fonts"
+    note: "GameCube NTSC-U boot ROM. HLE available but real IPL needed for GC menu boot and accurate fonts. Discs with the Brazilian country code B map to NTSC-U, so Latin America reads this directory too (Source/Core/DiscIO/Enums.cpp:162-166)."
     source_ref: "source Source/Core/Core/ConfigManager.cpp:876-883, source Source/Core/Core/HW/EXI/EXI_DeviceIPL.cpp:105"
 
   - name: "IPL.bin"
diff --git a/emulators/primehack.yml b/emulators/primehack.yml
index 7fe78122..71917d14 100644
--- a/emulators/primehack.yml
+++ b/emulators/primehack.yml
@@ -36,11 +36,11 @@ files:
   - name: "IPL.bin"
     path: "GC/USA/IPL.bin"
     system: nintendo-gamecube
-    region: [north-america]
+    region: [north-america, latin-america]
     size: 2097152
     required: false
     hle_fallback: true
-    note: "GameCube NTSC-U boot ROM. HLE available but real IPL needed for GC menu boot and accurate fonts"
+    note: "GameCube NTSC-U boot ROM. HLE available but real IPL needed for GC menu boot and accurate fonts. Discs with the Brazilian country code B and SYSCONF countries of the Americas map to NTSC-U, so Latin America reads this directory too (Source/Core/DiscIO/Enums.cpp:198-199, 249-251)."
     source_ref: "upstream Source/Core/Common/CommonPaths.h:138, source Source/Core/Core/HW/EXI/EXI_DeviceIPL.cpp:109-110"
 
   - name: "IPL.bin"
diff --git a/emulators/triforce.yml b/emulators/triforce.yml
index 675a5b44..a321a743 100644
--- a/emulators/triforce.yml
+++ b/emulators/triforce.yml
@@ -115,7 +115,7 @@ files:
     path: "GC/USA/IPL_TRI.bin"
     description: "Triforce boot ROM, NTSC-U directory"
     system: sega-triforce
-    region: [north-america]
+    region: [north-america, latin-america]
     size: 2097152
     crc32: "d1883221"
     validation: [crc32]
@@ -199,12 +199,12 @@ files:
     path: "GC/USA/IPL.bin"
     description: "GameCube NTSC-U boot ROM"
     system: nintendo-gamecube
-    region: [north-america]
+    region: [north-america, latin-america]
     size: 2097152
     required: false
     hle_fallback: true
     source_ref: "source Source/Core/Common/CommonPaths.h:148, source Source/Core/Core/Config/MainSettings.cpp:627-630, source Source/Core/Core/HW/EXI/EXI_DeviceIPL.cpp:109-118, 182-183"
-    note: "Needed to boot the GameCube menu and to take the fonts from a real dump."
+    note: "Needed to boot the GameCube menu and to take the fonts from a real dump. Discs with the Brazilian country code B and SYSCONF countries of the Americas map to NTSC-U, so Latin America reads this directory too (Source/Core/DiscIO/Enums.cpp:198-199, 249-251)."
 
   - name: "IPL.bin"
     path: "GC/EUR/IPL.bin"
diff --git a/tests/test_region.py b/tests/test_region.py
index 523951a1..8fe967f9 100644
--- a/tests/test_region.py
+++ b/tests/test_region.py
@@ -923,6 +923,13 @@ class RegionalRequestsKeepWhatTheCodeLoads(unittest.TestCase):
         ("genesis_plus_gx", ["brazil", "japan"], "bios_U.sms"),
         ("genesis_plus_gx_wide", ["australia", "japan"], "bios_U.sms"),
         ("genesis_plus_gx_expanded", ["brazil", "japan"], "bios_U.sms"),
+        ("dolphin", ["brazil", "europe"], "dolphin-emu/Sys/GC/USA/IPL.bin"),
+        ("ishiiruka", ["brazil", "europe"], "dolphin-emu/Sys/GC/USA/IPL.bin"),
+        ("dolphin-mmjr", ["brazil", "europe"], "GC/USA/IPL.bin"),
+        ("dolphin-mmjr2", ["brazil", "europe"], "GC/USA/IPL.bin"),
+        ("primehack", ["brazil", "europe"], "GC/USA/IPL.bin"),
+        ("triforce", ["brazil", "europe"], "GC/USA/IPL.bin"),
+        ("triforce", ["brazil", "europe"], "GC/USA/IPL_TRI.bin"),
     )
 
     def test_each_request_keeps_its_file(self):