diff --git a/asm/link.s b/asm/link.s
index 38629bff9..5abaef5b1 100644
--- a/asm/link.s
+++ b/asm/link.s
@@ -7,37 +7,6 @@
 
 // RFU; bss indicates that no file boundary exists here
 
-	thumb_func_start rfu_REQ_sendData_wrapper
-rfu_REQ_sendData_wrapper: @ 800BF0C
-	push {lr}
-	lsls r0, 24
-	lsrs r2, r0, 24
-	ldr r0, =gUnknown_03007890
-	ldr r0, [r0]
-	ldrb r0, [r0]
-	cmp r0, 0
-	bne _0800BF34
-	ldr r0, =gUnknown_03004140
-	ldrb r0, [r0, 0x2]
-	movs r2, 0
-	cmp r0, 0x1
-	bne _0800BF3C
-	movs r2, 0x1
-	b _0800BF3C
-	.pool
-_0800BF34:
-	ldr r0, =gUnknown_03004140
-	ldrb r1, [r0, 0x3]
-	movs r1, 0
-	strb r1, [r0, 0x3]
-_0800BF3C:
-	adds r0, r2, 0
-	bl rfu_REQ_sendData
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end rfu_REQ_sendData_wrapper
-
 	thumb_func_start sub_800BF4C
 sub_800BF4C: @ 800BF4C
 	push {r4-r6,lr}
diff --git a/include/librfu.h b/include/librfu.h
index 609fffea2..4e3c82ac3 100644
--- a/include/librfu.h
+++ b/include/librfu.h
@@ -103,9 +103,47 @@ struct RfuIntrStruct
     u8 block2[0x30];
 };
 
+struct RfuUnk1
+{
+    u8 unk_0[0x14];
+    u32 unk_14;
+    u32 unk_18;
+    struct RfuIntrStruct unk_1c;
+};
+
+struct RfuUnk2
+{
+    u8 unk_0[0x68];
+    u32 unk_68;
+    u32 unk_6c;
+    u8 unk_70[0x70];
+};
+
+struct RfuUnk3
+{
+    u32 unk_0;
+    u32 unk_4;
+    u8 unk_8[0xD4];
+    u32 unk_dc;
+};
+
+struct RfuUnk5
+{
+    u8 unk_00;
+};
+
 extern struct RfuStruct *gRfuState;
 
+extern struct RfuUnk5 *gUnknown_03007890;
+extern u32 *gUnknown_03007894;
+extern struct RfuUnk3* gUnknown_03007898;
+extern struct RfuUnk2* gUnknown_03007880[4];
+extern struct RfuUnk1* gUnknown_03007870[4];
+extern void* sub_82E53F4;
+extern void rfu_STC_clearAPIVariables(void);
+
 void STWI_init_all(struct RfuIntrStruct *interruptStruct, IntrFunc *interrupt, bool8 copyInterruptToRam);
 void rfu_REQ_stopMode(void);
 void rfu_waitREQComplete(void);
 u32 rfu_REQBN_softReset_and_checkID(void);
+void rfu_REQ_sendData(u8);
diff --git a/include/link_rfu.h b/include/link_rfu.h
index a395119fa..8929973d8 100644
--- a/include/link_rfu.h
+++ b/include/link_rfu.h
@@ -7,7 +7,7 @@ struct UnkRfuStruct_1 {
     u8 unk_00;
     u8 unk_01;
     u8 unk_02;
-    u8 unk_03;
+    vu8 unk_03;
     u8 unk_04;
     u8 unk_05;
     u8 unk_06;
diff --git a/src/librfu_rfu.c b/src/librfu_rfu.c
index cf3fe12ad..2169f4578 100644
--- a/src/librfu_rfu.c
+++ b/src/librfu_rfu.c
@@ -3,31 +3,7 @@
 
 #include "librfu.h"
 
-struct RfuUnk1
-{
-    u8 unk_0[0x14];
-    u32 unk_14;
-    u32 unk_18;
-    struct RfuIntrStruct unk_1c;
-};
-
-struct RfuUnk2
-{
-    u8 unk_0[0x68];
-    u32 unk_68;
-    u32 unk_6c;
-    u8 unk_70[0x70];
-};
-
-struct RfuUnk3
-{
-    u32 unk_0;
-    u32 unk_4;
-    u8 unk_8[0xD4];
-    u32 unk_dc;
-};
-
-extern u32 *gUnknown_03007890;
+extern struct RfuUnk5 *gUnknown_03007890;
 extern u32 *gUnknown_03007894;
 extern struct RfuUnk3* gUnknown_03007898;
 extern struct RfuUnk2* gUnknown_03007880[4];
diff --git a/src/link.c b/src/link.c
index 645fcc182..fc9e14b68 100644
--- a/src/link.c
+++ b/src/link.c
@@ -2447,7 +2447,6 @@ void ResetRecvBuffer(void)
 u32 sub_800BEC0(void)
 {
     u32 r4;
-    u8 r2;
 
     r4 = rfu_REQBN_softReset_and_checkID();
     if (r4 == 0x8001)
@@ -2467,3 +2466,22 @@ u32 sub_800BEC0(void)
     sub_800D610();
     return r4;
 }
+
+void rfu_REQ_sendData_wrapper(u8 r2)
+{
+    u8 val;
+    if (!gUnknown_03007890->unk_00)
+    {
+        val = gUnknown_03004140.unk_02;
+        r2 = 0;
+        if (val == 1)
+        {
+            r2 = 1;
+        }
+    }
+    else
+    {
+        gUnknown_03004140.unk_03 = 0;
+    }
+    rfu_REQ_sendData(r2);
+}