diff --git a/libctru/include/3ds.h b/libctru/include/3ds.h
index b002661..5244f28 100644
--- a/libctru/include/3ds.h
+++ b/libctru/include/3ds.h
@@ -63,6 +63,7 @@ extern "C" {
 #include <3ds/services/news.h>
 #include <3ds/services/qtm.h>
 #include <3ds/services/srvpm.h>
+#include <3ds/services/loader.h>
 #include <3ds/services/y2r.h>
 #include <3ds/services/mcuhwc.h>
 #include <3ds/services/hb.h>
@@ -78,6 +79,8 @@ extern "C" {
 #include <3ds/applets/swkbd.h>
 #include <3ds/applets/error.h>
 
+#include <3ds/applets/miiselector.h>
+
 #include <3ds/sdmc.h>
 #include <3ds/romfs.h>
 #include <3ds/font.h>
diff --git a/libctru/include/3ds/applets/miiselector.h b/libctru/include/3ds/applets/miiselector.h
new file mode 100644
index 0000000..6792635
--- /dev/null
+++ b/libctru/include/3ds/applets/miiselector.h
@@ -0,0 +1,90 @@
+/**
+ * @file miiselector.h
+ * @brief Mii Selector Applet (appletEd).
+ */
+
+#pragma once
+
+/// Magic value needed to launch the applet.
+#define MIISELECTOR_MAGIC 0x13DE28CF
+
+/// Maximum length of title to be displayed at the top of the Mii selector applet
+#define MIISELECTOR_TITLE_LEN 64
+
+/// Number of Guest Miis available for selection
+#define MIISELECTOR_GUESTMII_SLOTS 6
+
+/// Maximum number of user Miis available for selection
+#define MIISELECTOR_USERMII_SLOTS 100
+
+/// Parameter structure passed to AppletEd
+typedef struct
+{
+	char enable_cancel_button;        ///< Enables canceling of selection if nonzero.
+	char enable_selecting_guests;     ///< Makes Guets Miis selectable if nonzero.
+	char show_on_top_screen;          ///< Shows applet on top screen if nonzero,
+	                                  ///< otherwise show it on the bottom screen.
+	char _unk0x3[5];                  ///< @private
+	u16 title[MIISELECTOR_TITLE_LEN]; ///< UTF16-LE string displayed at the top of the applet. If
+	                                  ///< set to the empty string, a default title is displayed.
+	char _unk0x88[4];                 ///< @private
+	char show_guest_page;             ///< If nonzero, the applet shows a page with Guest
+	                                  ///< Miis on launch.
+	char _unk0x8D[3];                 ///< @private
+	u32 initial_index;                ///< Index of the initially selected Mii. If
+	                                  ///< @ref MiiSelectorConf.show_guest_page is
+	                                  ///< set, this is the index of a Guest Mii,
+	                                  ///< otherwise that of a user Mii.
+	char mii_guest_whitelist[MIISELECTOR_GUESTMII_SLOTS]; ///< Each byte set to a nonzero value
+	                                                      ///< enables its corresponding Guest
+	                                                      ///< Mii to be enabled for selection.
+	char mii_whitelist[MIISELECTOR_USERMII_SLOTS]; ///< Each byte set to a nonzero value enables
+	                                               ///< its corresponding user Mii to be enabled
+	                                               ///< for selection.
+	u16 _unk0xFE;                                  ///< @private
+	u32 magic; ///< Will be set to @ref MIISELECTOR_MAGIC before launching the
+	           ///< applet.
+} MiiSelectorConf;
+
+/// Size of the data describing a single Mii
+#define MIISELECTOR_MIIDATA_SIZE 0x5c
+
+/// Maximum length of the localized name of a Guest Mii
+#define MIISELECTOR_GUESTMII_NAME_LEN 12
+
+/// Structure written by AppletEd
+typedef struct
+{
+	u32 no_mii_selected;                ///< 0 if a Mii was selected, 1 if the selection was
+	                                    ///< canceled.
+	u32 guest_mii_was_selected;         ///< 1 if a Guest Mii was selected, 0 otherwise.
+	u32 guest_mii_index;                ///< Index of the selected Guest Mii,
+	                                    ///< 0xFFFFFFFF if no guest was selected.
+	char mii[MIISELECTOR_MIIDATA_SIZE]; ///< Data of selected Mii.
+	u16 _pad0x68;                       ///< @private
+	u16 checksum;                       ///< Checksum of the returned Mii data.
+	                                    ///< Stored as a big-endian value; use
+	                                    ///< @ref miiSelectorChecksumIsValid to
+	                                    ///< verify.
+	u16 guest_mii_name[MIISELECTOR_GUESTMII_NAME_LEN]; ///< Localized name of a Guest Mii,
+	                                                   ///< if one was selected (UTF16-LE
+	                                                   ///< string). Zeroed otherwise.
+} MiiSelectorReturn;
+
+/**
+ * @brief Launch the Mii selector library applet
+ *
+ * @param conf Configuration determining how the applet should behave
+ * @param returnbuf Data returned by the applet
+ */
+Result miiSelectorLaunch(const MiiSelectorConf *conf, MiiSelectorReturn* returnbuf);
+
+/**
+ * @brief Verifies that the Mii data returned from the applet matches its
+ * checksum
+ *
+ * @param returnbuffer Buffer filled by Mii selector applet
+ *
+ * @return `true` if `returnbuf->checksum` is the same as the one computed from `returnbuf`
+ */
+bool miiSelectorChecksumIsValid(const MiiSelectorReturn *returnbuf);
diff --git a/libctru/include/3ds/gpu/enums.h b/libctru/include/3ds/gpu/enums.h
index 5082b33..e9b0bdb 100644
--- a/libctru/include/3ds/gpu/enums.h
+++ b/libctru/include/3ds/gpu/enums.h
@@ -385,7 +385,7 @@ typedef enum
 /// Light distance attenuation disable bits in GPUREG_LIGHT_CONFIG1.
 #define GPU_LC1_ATTNBIT(n)     BIT((n)+24)
 /// Creates a light permutation parameter.
-#define GPU_LIGHTPERM(i,n)     ((n) << (i))
+#define GPU_LIGHTPERM(i,n)     ((n) << ((i)*4))
 /// Creates a light LUT input parameter.
 #define GPU_LIGHTLUTINPUT(i,n) ((n) << ((i)*4))
 /// Creates a light LUT index parameter.
diff --git a/libctru/include/3ds/gpu/gpu.h b/libctru/include/3ds/gpu/gpu.h
index d43b0a0..e3bfb44 100644
--- a/libctru/include/3ds/gpu/gpu.h
+++ b/libctru/include/3ds/gpu/gpu.h
@@ -56,12 +56,6 @@ static inline void GPUCMD_GetBuffer(u32** addr, u32* size, u32* offset)
  */
 void GPUCMD_AddRawCommands(const u32* cmd, u32 size);
 
-/// Executes the GPU command buffer.
-DEPRECATED void GPUCMD_Run(void);
-
-/// Flushes linear memory and executes the GPU command buffer.
-DEPRECATED void GPUCMD_FlushAndRun(void);
-
 /**
  * @brief Adds a GPU command to the current command buffer.
  * @param header Header of the command.
@@ -77,9 +71,6 @@ void GPUCMD_Add(u32 header, const u32* param, u32 paramlength);
  */
 void GPUCMD_Split(u32** addr, u32* size);
 
-/// Finalizes the GPU command buffer.
-DEPRECATED void GPUCMD_Finalize(void);
-
 /**
  * @brief Converts a 32-bit float to a 16-bit float.
  * @param f Float to convert.
diff --git a/libctru/include/3ds/services/gspgpu.h b/libctru/include/3ds/services/gspgpu.h
index 8c359a6..6636c46 100644
--- a/libctru/include/3ds/services/gspgpu.h
+++ b/libctru/include/3ds/services/gspgpu.h
@@ -218,3 +218,8 @@ Result GSPGPU_UnregisterInterruptRelayQueue(void);
 /// Triggers a handling of commands written to shared memory.
 Result GSPGPU_TriggerCmdReqQueue(void);
 
+/**
+ * @brief Sets 3D_LEDSTATE to the input state value.
+ * @param disable False = 3D LED enable, true = 3D LED disable.
+ */
+Result GSPGPU_SetLedForceOff(bool disable);
\ No newline at end of file
diff --git a/libctru/include/3ds/services/gsplcd.h b/libctru/include/3ds/services/gsplcd.h
index fdb219e..f044da9 100644
--- a/libctru/include/3ds/services/gsplcd.h
+++ b/libctru/include/3ds/services/gsplcd.h
@@ -19,6 +19,12 @@ Result gspLcdInit(void);
 /// Exits GSPLCD.
 void gspLcdExit(void);
 
+/// Powers on both backlights.
+Result GSPLCD_PowerOnAllBacklights(void);
+
+/// Powers off both backlights.
+Result GSPLCD_PowerOffAllBacklights(void);
+
 /**
  * @brief Powers on the backlight.
  * @param screen Screen to power on.
@@ -31,6 +37,12 @@ Result GSPLCD_PowerOnBacklight(u32 screen);
  */
 Result GSPLCD_PowerOffBacklight(u32 screen);
 
+/**
+ * @brief Sets 3D_LEDSTATE to the input state value.
+ * @param disable False = 3D LED enable, true = 3D LED disable.
+ */
+Result GSPLCD_SetLedForceOff(bool disable);
+
 /**
  * @brief Gets the LCD screens' vendors. Stubbed on old 3ds.
  * @param vendor Pointer to output the screen vendors to.
diff --git a/libctru/include/3ds/services/ir.h b/libctru/include/3ds/services/ir.h
index ee7250d..9521316 100644
--- a/libctru/include/3ds/services/ir.h
+++ b/libctru/include/3ds/services/ir.h
@@ -87,7 +87,7 @@ Result IRU_GetBitRate(u8 *out);
 Result IRU_SetIRLEDState(u32 value);
 
 /**
- * @brief Gets the IR KED state.
+ * @brief Gets the IR LED state.
  * @param out Pointer to write the IR LED state to.
  */
 Result IRU_GetIRLEDRecvState(u32 *out);
diff --git a/libctru/include/3ds/services/loader.h b/libctru/include/3ds/services/loader.h
new file mode 100644
index 0000000..e7f9fd2
--- /dev/null
+++ b/libctru/include/3ds/services/loader.h
@@ -0,0 +1,45 @@
+/**
+ * @file loader.h
+ * @brief LOADER Service
+ */
+
+#pragma once
+
+#include <3ds/exheader.h>
+#include <3ds/services/fs.h>
+
+/// Initializes LOADER.
+Result loaderInit(void);
+
+/// Exits LOADER.
+void loaderExit(void);
+
+/**
+ * @brief Loads a program and returns a process handle to the newly created process.
+ * @param[out] process Pointer to output the process handle to.
+ * @param programHandle The handle of the program to load.
+ */
+Result LOADER_LoadProcess(Handle* process, u64 programHandle);
+
+/**
+ * @brief Registers a program (along with its update).
+ * @param[out] programHandle Pointer to output the program handle to.
+ * @param titleId The program's title ID.
+ * @param mediaType The program's media type.
+ * @param updateTitleId The program update's title ID.
+ * @param updateMediaType The program update's media type.
+ */
+Result LOADER_RegisterProgram(u64* programHandle, u64 titleId, FS_MediaType mediaType, u64 updateTitleId, FS_MediaType updateMediaType);
+
+/**
+ * @brief Registers a program (along with its update).
+ * @param programHandle The handle of the program to unregister.
+ */
+Result LOADER_UnregisterProgram(u64 programHandle);
+
+/**
+ * @brief Retrives a program's main NCCH extended header info (SCI + ACI, see @ref ExHeader_Info).
+ * @param[out] exheaderInfo Pointer to output the main NCCH extended header info.
+ * @param programHandle The handle of the program to unregister
+ */
+Result LOADER_GetProgramInfo(ExHeader_Info* exheaderInfo, u64 programHandle);
diff --git a/libctru/source/applets/miiselector.c b/libctru/source/applets/miiselector.c
new file mode 100644
index 0000000..365dea2
--- /dev/null
+++ b/libctru/source/applets/miiselector.c
@@ -0,0 +1,57 @@
+#include <3ds/types.h>
+#include <3ds/result.h>
+#include <3ds/services/apt.h>
+
+#include <3ds/applets/miiselector.h>
+
+#include <string.h> // for memcpy
+
+Result miiSelectorLaunch(const MiiSelectorConf *conf, MiiSelectorReturn *returnbuf)
+{
+	union {
+		MiiSelectorConf config;
+		MiiSelectorReturn ret;
+	} ctx;
+
+	memcpy(&ctx.config, conf, sizeof(MiiSelectorConf));
+	ctx.config.magic = MIISELECTOR_MAGIC;
+
+	Result ret = aptLaunchLibraryApplet(APPID_APPLETED, &ctx.config, sizeof(MiiSelectorConf), 0);
+	if(R_SUCCEEDED(ret) && returnbuf) {
+		memcpy(returnbuf, &ctx.ret, sizeof(MiiSelectorReturn));
+	}
+
+	return ret;
+}
+
+static u16 crc16_ccitt(void const *buf, size_t len, uint32_t starting_val)
+{
+	if(buf == NULL) {
+		return -1;
+	}
+
+	u8 const *cbuf = buf;
+	u32 crc        = starting_val;
+
+	static const u16 POLY = 0x1021;
+
+	for(size_t i = 0; i < len; i++) {
+		for(int bit = 7; bit >= 0; bit--) {
+			crc = ((crc << 1) | ((cbuf[i] >> bit) & 0x1)) ^ (crc & 0x8000 ? POLY : 0);
+		}
+	}
+
+	for(int _ = 0; _ < 16; _++) {
+		crc = (crc << 1) ^ (crc & 0x8000 ? POLY : 0);
+	}
+
+	return (u16)(crc & 0xffff);
+}
+
+bool miiSelectorChecksumIsValid(const MiiSelectorReturn *returnbuf)
+{
+	u16 computed =
+	    crc16_ccitt(&returnbuf->mii, sizeof(returnbuf->mii) + sizeof(returnbuf->_pad0x68), 0x0000);
+	u16 chk_little_endian = __builtin_bswap16(returnbuf->checksum);
+	return computed == chk_little_endian;
+}
diff --git a/libctru/source/gpu/gpu.c b/libctru/source/gpu/gpu.c
index db77129..3b7afd2 100644
--- a/libctru/source/gpu/gpu.c
+++ b/libctru/source/gpu/gpu.c
@@ -22,21 +22,6 @@ void GPUCMD_AddRawCommands(const u32* cmd, u32 size)
 	gpuCmdBufOffset+=size;
 }
 
-void GPUCMD_Run(void)
-{
-	GX_ProcessCommandList(gpuCmdBuf, gpuCmdBufOffset*4, GX_CMDLIST_FLUSH);
-}
-
-extern u32 __ctru_linear_heap;
-extern u32 __ctru_linear_heap_size;
-
-void GPUCMD_FlushAndRun(void)
-{
-	//take advantage of GX_FlushCacheRegions to flush gsp heap
-	GX_FlushCacheRegions(gpuCmdBuf, gpuCmdBufOffset*4, (u32 *) __ctru_linear_heap, __ctru_linear_heap_size, NULL, 0);
-	GX_ProcessCommandList(gpuCmdBuf, gpuCmdBufOffset*4, 0x0);
-}
-
 void GPUCMD_Add(u32 header, const u32* param, u32 paramlength)
 {
 	if(!paramlength)paramlength=1;
@@ -74,15 +59,6 @@ void GPUCMD_Split(u32** addr, u32* size)
 	gpuCmdBufOffset  = 0;
 }
 
-void GPUCMD_Finalize(void)
-{
-	GPUCMD_AddMaskedWrite(GPUREG_PRIMITIVE_CONFIG, 0x8, 0x00000000);
-	GPUCMD_AddWrite(GPUREG_FRAMEBUFFER_FLUSH, 0x00000001);
-	GPUCMD_AddWrite(GPUREG_FRAMEBUFFER_INVALIDATE, 0x00000001);
-	GPUCMD_AddWrite(GPUREG_FINALIZE, 0x12345678);
-	GPUCMD_AddWrite(GPUREG_FINALIZE, 0x12345678); //not the cleanest way of guaranteeing 0x10-byte size but whatever good enough for now
-}
-
 static inline u32 floatrawbits(float f)
 {
 	union { float f; u32 i; } s;
diff --git a/libctru/source/services/gspgpu.c b/libctru/source/services/gspgpu.c
index 8d86689..1247267 100644
--- a/libctru/source/services/gspgpu.c
+++ b/libctru/source/services/gspgpu.c
@@ -430,3 +430,15 @@ Result GSPGPU_RestoreVramSysArea(void)
 	return cmdbuf[1];
 }
 
+Result GSPGPU_SetLedForceOff(bool disable)
+{
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0x1C,1,0); // 0x1C0040
+	cmdbuf[1] = disable & 0xFF;
+
+	Result ret=0;
+	if (R_FAILED(ret = svcSendSyncRequest(gspGpuHandle))) return ret;
+
+	return cmdbuf[1];
+}
\ No newline at end of file
diff --git a/libctru/source/services/gsplcd.c b/libctru/source/services/gsplcd.c
index 0183e56..06ab178 100644
--- a/libctru/source/services/gsplcd.c
+++ b/libctru/source/services/gsplcd.c
@@ -26,6 +26,30 @@ void gspLcdExit(void)
 	svcCloseHandle(gspLcdHandle);
 }
 
+Result GSPLCD_PowerOnAllBacklights(void)
+{
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0x0F,0,0); // 0x0F0000
+
+	Result ret=0;
+	if (R_FAILED(ret = svcSendSyncRequest(gspLcdHandle))) return ret;
+
+	return cmdbuf[1];
+}
+
+Result GSPLCD_PowerOffAllBacklights(void)
+{
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0x10,0,0); // 0x100000
+
+	Result ret=0;
+	if (R_FAILED(ret = svcSendSyncRequest(gspLcdHandle))) return ret;
+
+	return cmdbuf[1];
+}
+
 Result GSPLCD_PowerOnBacklight(u32 screen)
 {
 	u32 *cmdbuf = getThreadCommandBuffer();
@@ -52,6 +76,19 @@ Result GSPLCD_PowerOffBacklight(u32 screen)
 	return cmdbuf[1];
 }
 
+Result GSPLCD_SetLedForceOff(bool disable)
+{
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(0x13,1,0); // 0x130040
+	cmdbuf[1] = disable & 0xFF;
+
+	Result ret=0;
+	if (R_FAILED(ret = svcSendSyncRequest(gspLcdHandle))) return ret;
+
+	return cmdbuf[1];
+}
+
 Result GSPLCD_GetVendors(u8 *vendors)
 {
 	u32 *cmdbuf = getThreadCommandBuffer();
diff --git a/libctru/source/services/loader.c b/libctru/source/services/loader.c
new file mode 100644
index 0000000..5d6235a
--- /dev/null
+++ b/libctru/source/services/loader.c
@@ -0,0 +1,93 @@
+#include <3ds/services/loader.h>
+#include <3ds/result.h>
+#include <3ds/svc.h>
+#include <3ds/srv.h>
+#include <3ds/synchronization.h>
+#include <3ds/ipc.h>
+
+static Handle loaderHandle;
+static int loaderRefCount;
+
+Result loaderInit(void)
+{
+	Result res;
+	if (AtomicPostIncrement(&loaderRefCount)) return 0;
+	res = srvGetServiceHandle(&loaderHandle, "Loader");
+	if (R_FAILED(res)) AtomicDecrement(&loaderRefCount);
+	return res;
+}
+
+void loaderExit(void)
+{
+	if (AtomicDecrement(&loaderRefCount)) return;
+	svcCloseHandle(loaderHandle);
+}
+
+Result LOADER_LoadProcess(Handle* process, u64 programHandle)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(1, 2, 0); // 0x10080
+	cmdbuf[1] = (u32)programHandle;
+	cmdbuf[2] = (u32)(programHandle >> 32);
+	
+	if(R_FAILED(ret = svcSendSyncRequest(loaderHandle))) return ret;
+
+	*process = cmdbuf[3];
+
+	return (Result)cmdbuf[1];
+}
+
+Result LOADER_RegisterProgram(u64* programHandle, u64 titleId, FS_MediaType mediaType, u64 updateTitleId, FS_MediaType updateMediaType)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(2, 8, 0); // 0x20200
+	cmdbuf[1] = (u32)titleId;
+	cmdbuf[2] = (u32)(titleId >> 32);
+	cmdbuf[3] = mediaType;
+
+	cmdbuf[5] = (u32)updateTitleId;
+	cmdbuf[6] = (u32)(updateTitleId >> 32);
+	cmdbuf[7] = updateMediaType;
+
+	if(R_FAILED(ret = svcSendSyncRequest(loaderHandle))) return ret;
+
+	*programHandle = ((u64)cmdbuf[2] << 32) | cmdbuf[3];
+
+	return (Result)cmdbuf[1];
+}
+
+Result LOADER_UnregisterProgram(u64 programHandle)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = IPC_MakeHeader(3, 2, 0); // 0x30080
+	cmdbuf[1] = (u32)programHandle;
+	cmdbuf[2] = (u32)(programHandle >> 32);
+	
+	if(R_FAILED(ret = svcSendSyncRequest(loaderHandle))) return ret;
+
+	return (Result)cmdbuf[1];
+}
+
+Result LOADER_GetProgramInfo(ExHeader_Info* exheaderInfo, u64 programHandle)
+{
+	Result ret = 0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+	u32 *staticbufs = getThreadStaticBuffers();
+
+	cmdbuf[0] = IPC_MakeHeader(4, 2, 0); // 0x40080
+	cmdbuf[1] = (u32)programHandle;
+	cmdbuf[2] = (u32)(programHandle >> 32);
+
+	staticbufs[0] = IPC_Desc_StaticBuffer(0x400, 0);
+	staticbufs[1] = (u32)exheaderInfo;
+
+	if(R_FAILED(ret = svcSendSyncRequest(loaderHandle))) return ret;
+
+	return (Result)cmdbuf[1];
+}