diff --git a/src/code/z_eff_blure.c b/src/code/z_eff_blure.c
index e0957a0164..212f5ee7df 100644
--- a/src/code/z_eff_blure.c
+++ b/src/code/z_eff_blure.c
@@ -399,7 +399,7 @@ void EffectBlure_DrawElemNoInterpolation(EffectBlure* this, EffectBlureElement*
     if (vtx == NULL) {
         PRINTF(T("z_eff_blure.c::SQ_NoInterpolate_disp() 頂点確保できず。\n",
                  "z_eff_blure.c::SQ_NoInterpolate_disp() Vertices cannot be secured.\n"));
-        goto end;
+        goto close_disps;
     }
 
     vtx[0].v = baseVtx;
@@ -470,7 +470,7 @@ void EffectBlure_DrawElemNoInterpolation(EffectBlure* this, EffectBlureElement*
     gSPVertex(POLY_XLU_DISP++, vtx, 4, 0);
     gSP2Triangles(POLY_XLU_DISP++, 0, 1, 2, 0, 0, 2, 3, 0);
 
-end:
+close_disps:
     CLOSE_DISPS(gfxCtx, "../z_eff_blure.c", 932);
 }
 
diff --git a/src/code/z_eff_spark.c b/src/code/z_eff_spark.c
index ba39da6b80..a997caa129 100644
--- a/src/code/z_eff_spark.c
+++ b/src/code/z_eff_spark.c
@@ -174,7 +174,7 @@ void EffectSpark_Draw(void* thisx, GraphicsContext* gfxCtx) {
         if (vertices == NULL) {
             PRINTF(T("EffectSparkInfo_disp():メモリー確保失敗 graph_malloc\n",
                      "EffectSparkInfo_disp(): Memory Allocation Failure graph_malloc\n"));
-            goto end;
+            goto close_disps;
         }
 
         j = 0;
@@ -262,7 +262,7 @@ void EffectSpark_Draw(void* thisx, GraphicsContext* gfxCtx) {
 
             mtx = SkinMatrix_MtxFToNewMtx(gfxCtx, &sp12C);
             if (mtx == NULL) {
-                goto end;
+                goto close_disps;
             }
 
             gSPMatrix(POLY_XLU_DISP++, mtx, G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
@@ -273,6 +273,6 @@ void EffectSpark_Draw(void* thisx, GraphicsContext* gfxCtx) {
         gDPPipeSync(POLY_XLU_DISP++);
     }
 
-end:
+close_disps:
     CLOSE_DISPS(gfxCtx, "../z_eff_spark.c", 498);
 }
diff --git a/src/overlays/actors/ovl_Boss_Tw/z_boss_tw.c b/src/overlays/actors/ovl_Boss_Tw/z_boss_tw.c
index e2e78726ba..66f3b7dc4f 100644
--- a/src/overlays/actors/ovl_Boss_Tw/z_boss_tw.c
+++ b/src/overlays/actors/ovl_Boss_Tw/z_boss_tw.c
@@ -3411,45 +3411,48 @@ void func_80942C70(Actor* thisx, PlayState* play) {
 
     OPEN_DISPS(play->state.gfxCtx, "../z_boss_tw.c", 6765);
 
-    if (this->beamDist != 0.0f) {
-        Matrix_Push();
-        gSPSegment(POLY_XLU_DISP++, 0xC,
-                   Gfx_TexScroll(play->state.gfxCtx, 0, (u8)(this->work[CS_TIMER_1] * -0xF), 0x20, 0x40));
-        alpha = this->beamScale * 100.0f * 255.0f;
-
-        if (this->actor.params == TW_KOUME) {
-            gDPSetPrimColor(POLY_XLU_DISP++, 0, 0, 255, 255, 60, alpha);
-            gDPSetEnvColor(POLY_XLU_DISP++, 255, 0, 0, 128);
-        } else {
-            gDPSetPrimColor(POLY_XLU_DISP++, 0, 0, 255, 255, 255, alpha);
-            gDPSetEnvColor(POLY_XLU_DISP++, 100, 100, 255, 128);
-        }
-
-        Matrix_Translate(this->beamOrigin.x, this->beamOrigin.y, this->beamOrigin.z, MTXMODE_NEW);
-        Matrix_RotateY(this->beamYaw, MTXMODE_APPLY);
-        Matrix_RotateX(this->beamPitch, MTXMODE_APPLY);
-        Matrix_RotateZ(this->beamRoll, MTXMODE_APPLY);
-        Matrix_Scale(this->beamScale, this->beamScale, (this->beamDist * 0.01f * 98.0f) / 20000.0f, MTXMODE_APPLY);
-        gSPMatrix(POLY_XLU_DISP++, MATRIX_NEW(play->state.gfxCtx, "../z_boss_tw.c", 6846),
-                  G_MTX_LOAD | G_MTX_MODELVIEW | G_MTX_NOPUSH);
-        gSPDisplayList(POLY_XLU_DISP++, SEGMENTED_TO_VIRTUAL(gTwinrovaBeamDL));
-
-        if (this->beamReflectionDist > 10.0f) {
-            Matrix_Translate(this->beamReflectionOrigin.x, this->beamReflectionOrigin.y, this->beamReflectionOrigin.z,
-                             MTXMODE_NEW);
-            Matrix_RotateY(this->beamReflectionYaw, MTXMODE_APPLY);
-            Matrix_RotateX(this->beamReflectionPitch, MTXMODE_APPLY);
-            Matrix_RotateZ(this->beamRoll, MTXMODE_APPLY);
-            Matrix_Scale(this->beamScale, this->beamScale, (this->beamReflectionDist * 0.01f * 100.0f) / 20000.0f,
-                         MTXMODE_APPLY);
-            gSPMatrix(POLY_XLU_DISP++, MATRIX_NEW(play->state.gfxCtx, "../z_boss_tw.c", 6870),
-                      G_MTX_LOAD | G_MTX_MODELVIEW | G_MTX_NOPUSH);
-            gSPDisplayList(POLY_XLU_DISP++, SEGMENTED_TO_VIRTUAL(gTwinrovaBeamDL));
-        }
-
-        Matrix_Pop();
+    if (this->beamDist == 0.0f) {
+        goto close_disps;
     }
 
+    Matrix_Push();
+    gSPSegment(POLY_XLU_DISP++, 0xC,
+               Gfx_TexScroll(play->state.gfxCtx, 0, (u8)(this->work[CS_TIMER_1] * -0xF), 0x20, 0x40));
+    alpha = this->beamScale * 100.0f * 255.0f;
+
+    if (this->actor.params == TW_KOUME) {
+        gDPSetPrimColor(POLY_XLU_DISP++, 0, 0, 255, 255, 60, alpha);
+        gDPSetEnvColor(POLY_XLU_DISP++, 255, 0, 0, 128);
+    } else {
+        gDPSetPrimColor(POLY_XLU_DISP++, 0, 0, 255, 255, 255, alpha);
+        gDPSetEnvColor(POLY_XLU_DISP++, 100, 100, 255, 128);
+    }
+
+    Matrix_Translate(this->beamOrigin.x, this->beamOrigin.y, this->beamOrigin.z, MTXMODE_NEW);
+    Matrix_RotateY(this->beamYaw, MTXMODE_APPLY);
+    Matrix_RotateX(this->beamPitch, MTXMODE_APPLY);
+    Matrix_RotateZ(this->beamRoll, MTXMODE_APPLY);
+    Matrix_Scale(this->beamScale, this->beamScale, (this->beamDist * 0.01f * 98.0f) / 20000.0f, MTXMODE_APPLY);
+    gSPMatrix(POLY_XLU_DISP++, MATRIX_NEW(play->state.gfxCtx, "../z_boss_tw.c", 6846),
+              G_MTX_LOAD | G_MTX_MODELVIEW | G_MTX_NOPUSH);
+    gSPDisplayList(POLY_XLU_DISP++, SEGMENTED_TO_VIRTUAL(gTwinrovaBeamDL));
+
+    if (this->beamReflectionDist > 10.0f) {
+        Matrix_Translate(this->beamReflectionOrigin.x, this->beamReflectionOrigin.y, this->beamReflectionOrigin.z,
+                         MTXMODE_NEW);
+        Matrix_RotateY(this->beamReflectionYaw, MTXMODE_APPLY);
+        Matrix_RotateX(this->beamReflectionPitch, MTXMODE_APPLY);
+        Matrix_RotateZ(this->beamRoll, MTXMODE_APPLY);
+        Matrix_Scale(this->beamScale, this->beamScale, (this->beamReflectionDist * 0.01f * 100.0f) / 20000.0f,
+                     MTXMODE_APPLY);
+        gSPMatrix(POLY_XLU_DISP++, MATRIX_NEW(play->state.gfxCtx, "../z_boss_tw.c", 6870),
+                  G_MTX_LOAD | G_MTX_MODELVIEW | G_MTX_NOPUSH);
+        gSPDisplayList(POLY_XLU_DISP++, SEGMENTED_TO_VIRTUAL(gTwinrovaBeamDL));
+    }
+
+    Matrix_Pop();
+
+close_disps:
     CLOSE_DISPS(play->state.gfxCtx, "../z_boss_tw.c", 6878);
 }
 
diff --git a/src/overlays/gamestates/ovl_file_choose/z_file_choose.c b/src/overlays/gamestates/ovl_file_choose/z_file_choose.c
index 7416b8ac3a..c8462f53de 100644
--- a/src/overlays/gamestates/ovl_file_choose/z_file_choose.c
+++ b/src/overlays/gamestates/ovl_file_choose/z_file_choose.c
@@ -3,6 +3,9 @@
 #include "versions.h"
 #include "assets/textures/title_static/title_static.h"
 #include "assets/textures/parameter_static/parameter_static.h"
+#if PLATFORM_N64
+#include "n64dd.h"
+#endif
 
 static s16 sUnused = 106;
 
@@ -219,6 +222,14 @@ void FileSelect_UpdateMainMenu(GameState* thisx) {
             } else if (!this->n64ddFlags[this->buttonIndex]) {
                 Audio_PlaySfxGeneral(NA_SE_SY_FSEL_ERROR, &gSfxDefaultPos, 4, &gSfxDefaultFreqAndVolScale,
                                      &gSfxDefaultFreqAndVolScale, &gSfxDefaultReverb);
+            } else {
+#if PLATFORM_N64
+                if (D_80121212 != 0) {
+                    func_801C7268();
+                    // Setting ioData to 1 and writing it to ioPort 7 will skip the harp intro
+                    Audio_PlaySequenceWithSeqPlayerIO(SEQ_PLAYER_BGM_MAIN, NA_BGM_FILE_SELECT, 0, 7, 1);
+                }
+#endif
             }
         } else {
             if (this->warningLabel == FS_WARNING_NONE) {
@@ -821,14 +832,13 @@ static s16 sHeartEnvColors[2][3] = { { 50, 40, 60 }, { 255, 255, 255 } };
 void FileSelect_DrawFileInfo(GameState* thisx, s16 fileIndex, s16 isActive) {
     FileSelectState* this = (FileSelectState*)thisx;
     Font* sp54 = &this->font;
-    s32 heartType;
-    s16 i;
+    s16 heartType;
     s16 vtxOffset;
+    s16 i;
     s16 j;
+    s16 k;
     s16 deathCountSplit[3];
 
-    if (1) {}
-
     OPEN_DISPS(this->state.gfxCtx, "../z_file_choose.c", 1709);
 
     gDPPipeSync(POLY_OPA_DISP++);
@@ -857,8 +867,8 @@ void FileSelect_DrawFileInfo(GameState* thisx, s16 fileIndex, s16 isActive) {
         FileSelect_SplitNumber(this->deaths[fileIndex], &deathCountSplit[0], &deathCountSplit[1], &deathCountSplit[2]);
 
         // draw death count
-        for (i = 0, vtxOffset = 0; i < 3; i++, vtxOffset += 4) {
-            FileSelect_DrawCharacter(this->state.gfxCtx, sp54->fontBuf + deathCountSplit[i] * FONT_CHAR_TEX_SIZE,
+        for (k = 0, vtxOffset = 0; k < 3; k++, vtxOffset += 4) {
+            FileSelect_DrawCharacter(this->state.gfxCtx, sp54->fontBuf + deathCountSplit[k] * FONT_CHAR_TEX_SIZE,
                                      vtxOffset);
         }
 
@@ -874,10 +884,10 @@ void FileSelect_DrawFileInfo(GameState* thisx, s16 fileIndex, s16 isActive) {
         gDPSetEnvColor(POLY_OPA_DISP++, sHeartEnvColors[heartType][0], sHeartEnvColors[heartType][1],
                        sHeartEnvColors[heartType][2], 255);
 
-        i = this->healthCapacities[fileIndex] / 0x10;
+        k = this->healthCapacities[fileIndex] / 0x10;
 
         // draw hearts
-        for (vtxOffset = 0, j = 0; j < i; j++, vtxOffset += 4) {
+        for (vtxOffset = 0, j = 0; j < k; j++, vtxOffset += 4) {
             gSPVertex(POLY_OPA_DISP++, &this->windowContentVtx[D_8081284C[fileIndex] + vtxOffset] + 0x30, 4, 0);
 
             POLY_OPA_DISP = FileSelect_QuadTextureIA8(POLY_OPA_DISP, sHeartTextures[heartType], 0x10, 0x10, 0);
@@ -984,9 +994,9 @@ static void* sOptionsButtonTextures[] = LANGUAGE_ARRAY(gFileSelOptionsButtonJPNT
 void FileSelect_DrawWindowContents(GameState* thisx) {
     FileSelectState* this = (FileSelectState*)thisx;
     s16 fileIndex;
-    s16 temp;
     s16 i;
     s16 quadVtxIndex;
+    s16 temp;
     s16 isActive;
     s16 pad;
 
@@ -1560,6 +1570,14 @@ void FileSelect_LoadGame(GameState* thisx) {
         gSaveContext.save.info.equips.equipment &= gEquipNegMasks[EQUIP_TYPE_SWORD];
         gSaveContext.save.info.inventory.equipment ^= OWNED_EQUIP_FLAG(EQUIP_TYPE_SWORD, swordEquipValue - 1);
     }
+
+#if PLATFORM_N64
+    if (D_80121212 != 0) {
+        s32 fileNum = gSaveContext.fileNum;
+
+        n64dd_SetDiskVersion(this->n64ddFlags[fileNum]);
+    }
+#endif
 }
 
 static void (*sSelectModeUpdateFuncs[])(GameState*) = {
@@ -1645,7 +1663,15 @@ void FileSelect_Main(GameState* thisx) {
 
     OPEN_DISPS(this->state.gfxCtx, "../z_file_choose.c", 2898);
 
+#if PLATFORM_N64
+    if ((D_80121212 != 0) && (func_801C70FC() != 0)) {
+        this->n64ddFlag = 1;
+    } else {
+        this->n64ddFlag = 0;
+    }
+#else
     this->n64ddFlag = 0;
+#endif
 
     gSPSegment(POLY_OPA_DISP++, 0x00, NULL);
     gSPSegment(POLY_OPA_DISP++, 0x01, this->staticSegment);
@@ -1924,6 +1950,12 @@ void FileSelect_Init(GameState* thisx) {
     u32 size = (uintptr_t)_title_staticSegmentRomEnd - (uintptr_t)_title_staticSegmentRomStart;
     s32 pad;
 
+#if PLATFORM_N64
+    if (D_80121212 != 0) {
+        func_801C7268();
+    }
+#endif
+
     SREG(30) = 1;
     PRINTF("SIZE=%x\n", size);
 
diff --git a/src/overlays/gamestates/ovl_file_choose/z_file_nameset.c b/src/overlays/gamestates/ovl_file_choose/z_file_nameset.c
index a412b17c46..fc307208c1 100644
--- a/src/overlays/gamestates/ovl_file_choose/z_file_nameset.c
+++ b/src/overlays/gamestates/ovl_file_choose/z_file_nameset.c
@@ -308,7 +308,7 @@ void FileSelect_SetNameEntryVtx(GameState* thisx) {
     gSPVertex(POLY_OPA_DISP++, this->nameEntryVtx + 4, 32, 0);
     gDPSetPrimColor(POLY_OPA_DISP++, 0, 0, 255, 255, 255, this->nameEntryBoxAlpha);
 
-    for (phi_v0 = 0, phi_s0 = 0; phi_s0 < 0x20; phi_s0 += 4, phi_v0++) {
+    for (phi_s0 = 0, phi_v0 = 0; phi_s0 < 0x20; phi_s0 += 4, phi_v0++) {
         FileSelect_DrawCharacter(this->state.gfxCtx,
                                  font->fontBuf + this->fileNames[this->buttonIndex][phi_v0] * FONT_CHAR_TEX_SIZE,
                                  phi_s0);
diff --git a/tools/disasm/ntsc-1.2/files_ovl_file_choose.csv b/tools/disasm/ntsc-1.2/files_ovl_file_choose.csv
index 1e4aeabcc3..ab21a34f0c 100644
--- a/tools/disasm/ntsc-1.2/files_ovl_file_choose.csv
+++ b/tools/disasm/ntsc-1.2/files_ovl_file_choose.csv
@@ -1,7 +1,7 @@
 offset,vram,.text
 0,80803880,src/overlays/gamestates/ovl_file_choose/z_file_copy_erase
 3040,808068C0,src/overlays/gamestates/ovl_file_choose/z_file_nameset
-8440,8080BCC0,z_file_choose
+8440,8080BCC0,src/overlays/gamestates/ovl_file_choose/z_file_choose
 
 offset,vram,.data
 EC50,808124D0,src/overlays/gamestates/ovl_file_choose/z_file_nameset_data
diff --git a/tools/disasm/ntsc-1.2/functions.txt b/tools/disasm/ntsc-1.2/functions.txt
index 96900ef2c1..9548af197a 100644
--- a/tools/disasm/ntsc-1.2/functions.txt
+++ b/tools/disasm/ntsc-1.2/functions.txt
@@ -3099,6 +3099,8 @@ Regs_InitDataImpl = 0x800E2704; // type:func
 Regs_InitData = 0x800E35D0; // type:func
 njpgdspMainTextStart = 0x800E7200; // type:func
 func_801C6E80 = 0x801C7740; // type:func
+func_801C70FC = 0x801C79BC; // type:func
+func_801C7268 = 0x801C7BC4; // type:func
 func_801C7C1C = 0x801C8510; // type:func
 n64dd_SetDiskVersion = 0x801C8808; // type:func
 ConsoleLogo_Calc = 0x80800000; // type:func