diff --git a/fusee/fusee-secondary/src/kernel_patches.c b/fusee/fusee-secondary/src/kernel_patches.c
index 192e457e5..87bcd5615 100644
--- a/fusee/fusee-secondary/src/kernel_patches.c
+++ b/fusee/fusee-secondary/src/kernel_patches.c
@@ -28,6 +28,40 @@ typedef struct {
 
 /* Patch definitions. */
 /*  
+    mov w10, w23
+    lsl x10, x10, #2
+    ldr x10, [x28, x10]
+    mov x9, #0x0000ffffffffffff
+    and x8, x10, x9
+    mov x9, #0xffff000000000000
+    and x10, x10, x9
+    mov x9, #0xfffe000000000000
+    cmp x10, x9
+    beq #12
+    ldr x10, [sp,#0xa0]
+    ldr x8, [x10,#0x2b0]
+    ldr x10, [sp,#0xa0]
+*/
+static const uint8_t MAKE_KERNEL_PATTERN_NAME(400, proc_id_send)[] = {0xEA, 0x53, 0x40, 0xF9, 0x48, 0x59, 0x41, 0xF9, 0xE9, 0x03, 0x17, 0x2A, 0x29, 0xF5, 0x7E, 0xD3};
+static const instruction_t MAKE_KERNEL_HOOK_NAME(400, proc_id_send)[] = {0xF9403BED, 0x2A0E03EA, 0xD37EF54A, 0xF86A69AA, 0x92FFFFE9, 0x8A090148, 0xD2FFFFE9, 0x8A09014A, 0xD2FFFFC9, 0xEB09015F, 0x54000040, 0xF9415B28, 0xD503201F};
+/*  
+    ldr x13, [sp,#0x70]
+    mov w10, w14
+    lsl x10, x10, #2
+    ldr x10, [x13, x10]
+    mov x9, #0x0000ffffffffffff
+    and x8, x10, x9
+    mov x9, #0xffff000000000000
+    and x10, x10, x9
+    mov x9, #0xfffe000000000000
+    cmp x10, x9
+    beq #8
+    ldr x8, [x25,#0x2b0]
+    nop
+*/
+static const uint8_t MAKE_KERNEL_PATTERN_NAME(400, proc_id_recv)[] = {0x28, 0x5B, 0x41, 0xF9, 0xE9, 0x03, 0x0E, 0x2A, 0xCE, 0x09, 0x00, 0x11, 0x29, 0xF5, 0x7E, 0xD3};
+static const instruction_t MAKE_KERNEL_HOOK_NAME(400, proc_id_recv)[] = {0xD280000D, 0x2A0E03ED, 0xD37EF5AD, 0xF86D6B4D, 0x92FFFFE9, 0x8A090148, 0xD2FFFFE9, 0x8A0901AD, 0xD2FFFFC9, 0xEB09015F, 0x54000040, 0xF9415B28, 0xD503201F};
+/*
     mov w10, w23
     lsl x10, x10, #2
     ldr x10, [x27, x10]
@@ -76,7 +110,22 @@ static const kernel_hook_t g_kernel_hooks_302[] = {
     /* TODO */
 };
 static const kernel_hook_t g_kernel_hooks_400[] = {
-    /* TODO */
+    {   /* Send Message Process ID Patch. */
+        .pattern_size = 0x10,
+        .pattern = MAKE_KERNEL_PATTERN_NAME(400, proc_id_send),
+        .pattern_hook_offset = 0x0,
+        .payload_num_instructions = 13,
+        .branch_back_offset = 0x8,
+        .payload = MAKE_KERNEL_HOOK_NAME(400, proc_id_send)
+    },
+    {   /* Receive Message Process ID Patch. */
+        .pattern_size = 0x10,
+        .pattern = MAKE_KERNEL_PATTERN_NAME(400, proc_id_recv),
+        .pattern_hook_offset = 0x0,
+        .payload_num_instructions = 13,
+        .branch_back_offset = 0x4,
+        .payload = MAKE_KERNEL_HOOK_NAME(400, proc_id_recv)
+    }
 };
 static const kernel_hook_t g_kernel_hooks_500[] = {
     {   /* Send Message Process ID Patch. */