diff --git a/retail/bootloader/source/arm7/dsi2ds_patches.c b/retail/bootloader/source/arm7/dsi2ds_patches.c
index e38393612..e8f3d66ab 100644
--- a/retail/bootloader/source/arm7/dsi2ds_patches.c
+++ b/retail/bootloader/source/arm7/dsi2ds_patches.c
@@ -11087,7 +11087,13 @@ void patchDSiModeToDSMode(cardengineArm9* ce9, const tNDSHeader* ndsHeader) {
 		*(u32*)0x020117D4 = 0xE1A00000; // nop
 		tonccpy((u32*)0x0201234C, dsiSaveGetResultCode, 0xC);
 		*(u32*)0x020152F0 = 0xE1A00000; // nop
-		patchInitDSiWare(0x0201BFB4, heapEnd8MBHack);
+		patchInitDSiWare(0x0201BFB4, heapEnd);
+		*(u32*)0x0201C340 = *(u32*)0x02004FD0;
+		if (!extendedMemory) {
+			// Shrink heap from 0x60E000
+			*(u32*)0x020250B4 = 0xE2822602; // add r2, r2, 0x200000
+			*(u32*)0x020250EC = 0x20E000;
+		}
 		*(u32*)0x020381BC = 0xE1A00000; // nop
 		setBL(0x02038250, (u32)dsiSaveGetInfo);
 		setBL(0x02038294, (u32)dsiSaveOpen);
diff --git a/retail/bootloader/source/arm7/main.arm7.c b/retail/bootloader/source/arm7/main.arm7.c
index 2a779dddb..6086754ac 100644
--- a/retail/bootloader/source/arm7/main.arm7.c
+++ b/retail/bootloader/source/arm7/main.arm7.c
@@ -273,6 +273,7 @@ static void resetMemory_ARM7(void) {
 	toncset((u32*)0x02380000, 0, 0x38000);		// clear part of EWRAM - except before 0x023DA000, which has the arm9 code
 	toncset((u32*)0x023C0000, 0, 0x20000);
 	toncset((u32*)0x023F0000, 0, 0xD000);
+	toncset((u32*)0x023FE000, 0, 0x400);
 	toncset((u32*)0x023FF000, 0, 0x1000);
 	if (extendedMemory) {
 		toncset((u32*)0x02400000, 0, 0x3FC000);