diff --git a/Makefile b/Makefile
index 086818f..42811f9 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,19 @@ ifneq ($(strip $(shell firmtool -v 2>&1 | grep usage)),)
 $(error "Please install firmtool v1.1 or greater")
 endif
 
+# Disable kext and firmlaunch patches, all custom sysmodules except Loader, enable PASLR.
+# Dangerous. Don't enable this unless you know what you're doing!
+export BUILD_FOR_EXPLOIT_DEV ?= 0
+
+# Build with O0 & frame pointer information for use with GDB
+export BUILD_FOR_GDB ?= 0
+
+# Default 3DSX TitleID for hb:ldr
+export HBLDR_DEFAULT_3DSX_TID ?= 000400000D921E00
+
+# What to call the title corresponding to HBLDR_DEFAULT_3DSX_TID
+export HBLDR_DEFAULT_3DSX_TITLE_NAME ?= "hblauncher_loader"
+
 NAME		:=	$(notdir $(CURDIR))
 REVISION	:=	$(shell git describe --tags --match v[0-9]* --abbrev=8 | sed 's/-[0-9]*-g/-/')
 
diff --git a/arm11/Makefile b/arm11/Makefile
index 61b8e4a..1940b76 100644
--- a/arm11/Makefile
+++ b/arm11/Makefile
@@ -26,7 +26,7 @@ INCLUDES	:=	include include/svc
 # options for code generation
 #---------------------------------------------------------------------------------
 ARCH	:=	-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
-DEFINES :=	-DARM11 -D_3DS
+DEFINES :=	-DARM11 -D__3DS__
 
 CFLAGS	:=	-g -std=gnu11 -Wall -Wextra -Werror -O2 -mword-relocations \
 			-fomit-frame-pointer -ffunction-sections -fdata-sections \
diff --git a/arm9/Makefile b/arm9/Makefile
index 843f8ad..04a15c3 100644
--- a/arm9/Makefile
+++ b/arm9/Makefile
@@ -35,6 +35,9 @@ ifeq ($(strip $(shell git describe --tags --match v[0-9]* | grep -)),)
 	export IS_RELEASE		:=	1
 endif
 
+# Default 3DSX TitleID for hb:ldr (note: also defined in top-level Makefile)
+export HBLDR_DEFAULT_3DSX_TID ?= 000400000D921E00
+
 #---------------------------------------------------------------------------------
 # TARGET is the name of the output
 # BUILD is the directory where object files & intermediate files will be placed
@@ -53,7 +56,12 @@ INCLUDES	:=	include
 # options for code generation
 #---------------------------------------------------------------------------------
 ARCH	:=	-marm -march=armv5te -mtune=arm946e-s
-DEFINES :=	-DARM9 -D_3DS
+
+ifeq ($(BUILD_FOR_EXPLOIT_DEV),1)
+	DEFINES :=	-DARM9 -D__3DS__ -DHBLDR_DEFAULT_3DSX_TID="0x$(HBLDR_DEFAULT_3DSX_TID)ULL" -DBUILD_FOR_EXPLOIT_DEV=1
+else
+	DEFINES :=	-DARM9 -D__3DS__ -DHBLDR_DEFAULT_3DSX_TID="0x$(HBLDR_DEFAULT_3DSX_TID)ULL"
+endif
 
 FALSEPOSITIVES := -Wno-array-bounds -Wno-stringop-overflow -Wno-stringop-overread
 CFLAGS	:=	-g -std=gnu11 -Wall -Wextra -Werror -O2 -mword-relocations \
diff --git a/arm9/source/config.h b/arm9/source/config.h
index cf64164..23b4a04 100644
--- a/arm9/source/config.h
+++ b/arm9/source/config.h
@@ -28,7 +28,6 @@
 
 #include "types.h"
 
-#define HBLDR_DEFAULT_3DSX_TID      0x000400000D921E00ull
 #define AUTOBOOT_DEFAULT_TWL_TID    0x0003000448424C41ull
 
 #define CONFIG(a)        (((configData.config >> (a)) & 1) != 0)
diff --git a/arm9/source/firm.c b/arm9/source/firm.c
index 6088bbe..c0b4f33 100755
--- a/arm9/source/firm.c
+++ b/arm9/source/firm.c
@@ -352,8 +352,7 @@ static inline void mergeSection0(FirmwareType firmType, u32 firmVersion, bool lo
 
 u32 patchNativeFirm(u32 firmVersion, FirmwareSource nandType, bool loadFromStorage, bool isFirmProtEnabled, bool needToInitSd, bool doUnitinfoPatch)
 {
-    u8 *arm9Section = (u8 *)firm + firm->section[2].offset,
-       *arm11Section1 = (u8 *)firm + firm->section[1].offset;
+    u8 *arm9Section = (u8 *)firm + firm->section[2].offset;
 
     if(ISN3DS)
     {
@@ -367,22 +366,27 @@ u32 patchNativeFirm(u32 firmVersion, FirmwareSource nandType, bool loadFromStora
         process9MemAddr;
     u8 *process9Offset = getProcess9Info(arm9Section, firm->section[2].size, &process9Size, &process9MemAddr);
 
-    //Find the Kernel11 SVC table and handler, exceptions page and free space locations
-    u32 baseK11VA;
-    u8 *freeK11Space;
-    u32 *arm11SvcHandler,
-        *arm11ExceptionsPage,
-        *arm11SvcTable = getKernel11Info(arm11Section1, firm->section[1].size, &baseK11VA, &freeK11Space, &arm11SvcHandler, &arm11ExceptionsPage);
-
     u32 kernel9Size = (u32)(process9Offset - arm9Section) - sizeof(Cxi) - 0x200,
         ret = 0;
 
+#ifndef BUILD_FOR_EXPLOIT_DEV
     //Skip on FIRMs < 4.0
     if(ISN3DS || firmVersion >= 0x1D)
     {
+        //Find the Kernel11 SVC table and handler, exceptions page and free space locations
+        u8 *arm11Section1 = (u8 *)firm + firm->section[1].offset;
+        u32 baseK11VA;
+        u8 *freeK11Space;
+        u32 *arm11SvcHandler,
+            *arm11ExceptionsPage,
+            *arm11SvcTable = getKernel11Info(arm11Section1, firm->section[1].size, &baseK11VA, &freeK11Space, &arm11SvcHandler, &arm11ExceptionsPage);
+
         ret += installK11Extension(arm11Section1, firm->section[1].size, needToInitSd, baseK11VA, arm11ExceptionsPage, &freeK11Space);
         ret += patchKernel11(arm11Section1, firm->section[1].size, baseK11VA, arm11SvcTable, arm11ExceptionsPage);
     }
+#else
+    (void)needToInitSd;
+#endif
 
     //Apply signature patches
     ret += patchSignatureChecks(process9Offset, process9Size);
@@ -393,8 +397,10 @@ u32 patchNativeFirm(u32 firmVersion, FirmwareSource nandType, bool loadFromStora
     //Apply FIRM0/1 writes patches on SysNAND to protect A9LH
     else if(isFirmProtEnabled) ret += patchFirmWrites(process9Offset, process9Size);
 
+#ifndef BUILD_FOR_EXPLOIT_DEV
     //Apply firmlaunch patches
     ret += patchFirmlaunches(process9Offset, process9Size, process9MemAddr);
+#endif
 
     //Apply dev unit check patches related to NCCH encryption
     if(!ISDEVUNIT)
diff --git a/k11_extension/Makefile b/k11_extension/Makefile
index a4c0b3d..3a7f833 100644
--- a/k11_extension/Makefile
+++ b/k11_extension/Makefile
@@ -27,7 +27,7 @@ INCLUDES	:=	include include/svc
 #---------------------------------------------------------------------------------
 # -mgeneral-regs-only so that the C code is guaranteed not to use FPU regs
 ARCH	:=	-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft -mgeneral-regs-only
-DEFINES :=	-DARM11 -D_3DS
+DEFINES :=	-DARM11 -D__3DS__
 
 FALSEPOSITIVES := -Wno-array-bounds -Wno-stringop-overflow -Wno-stringop-overread
 CFLAGS	:=	-g -std=gnu11 -Wall -Wextra -Werror -O2 -mword-relocations \
diff --git a/sysmodules/Makefile b/sysmodules/Makefile
index bdd18a5..2477587 100644
--- a/sysmodules/Makefile
+++ b/sysmodules/Makefile
@@ -1,9 +1,15 @@
-SUBFOLDERS	:=	loader sm pm pxi rosalina
-CXIS		:=	$(foreach dir, $(SUBFOLDERS), $(dir)/$(dir).cxi)
+ifeq ($(BUILD_FOR_EXPLOIT_DEV),1)
+	# Keep Loader so that we can execute 3DSX
+	SUBFOLDERS := loader
+else
+	SUBFOLDERS := loader sm pm pxi rosalina
+endif
 
-.PHONY:	all clean $(SUBFOLDERS)
+CXIS := $(foreach dir, $(SUBFOLDERS), $(dir)/$(dir).cxi)
 
-all:	sysmodules.bin
+.PHONY: all clean $(SUBFOLDERS)
+
+all: sysmodules.bin
 
 clean:
 	@$(foreach dir, $(SUBFOLDERS), $(MAKE) -C $(dir) clean &&) true
diff --git a/sysmodules/loader/Makefile b/sysmodules/loader/Makefile
index c8eb15d..82ac5cf 100755
--- a/sysmodules/loader/Makefile
+++ b/sysmodules/loader/Makefile
@@ -9,6 +9,9 @@ endif
 TOPDIR ?= $(CURDIR)
 include $(DEVKITARM)/3ds_rules
 
+# Default 3DSX TitleID for hb:ldr (note: also defined in top-level Makefile)
+export HBLDR_DEFAULT_3DSX_TID ?= 000400000D921E00
+
 #---------------------------------------------------------------------------------
 # TARGET is the name of the output
 # BUILD is the directory where object files & intermediate files will be placed
@@ -26,13 +29,35 @@ INCLUDES	:=	include
 # options for code generation
 #---------------------------------------------------------------------------------
 ARCH	:=	-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
-DEFINES :=	-D__3DS__
 
-COMMON_FLAGS = -g -Wall -Wextra -Werror -O2 -mword-relocations \
-			-fomit-frame-pointer -ffunction-sections -fdata-sections \
-			$(ARCH) $(DEFINES) $(INCLUDE)
+ifeq ($(BUILD_FOR_EXPLOIT_DEV),1)
+	DEFINES :=	-D__3DS__ -DHBLDR_DEFAULT_3DSX_TID="0x$(HBLDR_DEFAULT_3DSX_TID)ULL" -DBUILD_FOR_EXPLOIT_DEV=1
+else
+	DEFINES :=	-D__3DS__ -DHBLDR_DEFAULT_3DSX_TID="0x$(HBLDR_DEFAULT_3DSX_TID)ULL"
+endif
 
-CFLAGS	:=	-std=gnu11 $(COMMON_FLAGS)
+ifeq ($(BUILD_FOR_GDB),1)
+	OPTFLAGS := -O0
+	LIBS := -lctrud
+else
+	OPTFLAGS := -O2 -fomit-frame-pointer
+	LIBS := -lctru
+endif
+
+COMMON_FLAGS =\
+		-g \
+		-Wall \
+		-Wextra \
+		-Werror \
+		-mword-relocations \
+		-ffunction-sections \
+		-fdata-sections \
+		$(OPTFLAGS) \
+		$(ARCH) \
+		$(DEFINES) \
+		$(INCLUDE)
+
+CFLAGS		:= -std=gnu11 $(COMMON_FLAGS)
 
 CXXFLAGS	:= -fno-rtti -fno-exceptions -std=gnu++17 $(COMMON_FLAGS)
 
diff --git a/sysmodules/loader/source/loader.c b/sysmodules/loader/source/loader.c
index 1c0795a..9884f2d 100644
--- a/sysmodules/loader/source/loader.c
+++ b/sysmodules/loader/source/loader.c
@@ -5,7 +5,6 @@
 #include "ifile.h"
 #include "util.h"
 #include "hbldr.h"
-#include "luma_shared_config.h"
 
 extern u32 config, multiConfig, bootConfig;
 extern bool isN3DS, isSdMode;
diff --git a/sysmodules/loader/source/luma_shared_config.h b/sysmodules/loader/source/luma_shared_config.h
index 31cb490..ac7eab2 100644
--- a/sysmodules/loader/source/luma_shared_config.h
+++ b/sysmodules/loader/source/luma_shared_config.h
@@ -18,9 +18,6 @@
 
 #include <3ds/types.h>
 
-/// Default TitleID for 3DSX loading
-#define HBLDR_DEFAULT_3DSX_TID 0x000400000D921E00ULL
-
 /// Luma shared config type.
 typedef struct LumaSharedConfig {
     u64 hbldr_3dsx_tid;         ///< Title ID to use for 3DSX loading.
diff --git a/sysmodules/loader/source/paslr.c b/sysmodules/loader/source/paslr.c
index 43de7b5..3e1f67f 100644
--- a/sysmodules/loader/source/paslr.c
+++ b/sysmodules/loader/source/paslr.c
@@ -47,7 +47,7 @@ static bool needsPaslr(u32 *outRegion, const ExHeader_Info *exhi)
 
     *outRegion = region;
 
-#ifdef LOADER_ENABLE_PASLR
+#if defined(LOADER_ENABLE_PASLR) || defined(BUILD_FOR_EXPLOIT_DEV)
     // Only applications and system applets (HM, Internet Browser...) are eligible for PASLR
     if (region != MEMOP_REGION_APP && region != MEMOP_REGION_SYSTEM)
         return false;
diff --git a/sysmodules/pm/Makefile b/sysmodules/pm/Makefile
index a750339..79493fd 100644
--- a/sysmodules/pm/Makefile
+++ b/sysmodules/pm/Makefile
@@ -28,19 +28,33 @@ INCLUDES	:=	include
 ARCH	:=	-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
 DEFINES :=	-D__3DS__
 
-CFLAGS	:=	-g -std=gnu11 -Wall -Wextra -Werror -Os -mword-relocations \
-			-fomit-frame-pointer -ffunction-sections -fdata-sections \
-			$(ARCH) $(DEFINES)
+ifeq ($(BUILD_FOR_GDB),1)
+	OPTFLAGS := -O0
+	LIBS := -lctrud
+else
+	OPTFLAGS := -O2 -fomit-frame-pointer
+	LIBS := -lctru
+endif
 
-CFLAGS	+=	$(INCLUDE)
+CFLAGS	:=\
+		-g \
+		-std=gnu11 \
+		-Wall \
+		-Wextra \
+		-Werror \
+		-mword-relocations \
+		-ffunction-sections \
+		-fdata-sections \
+		$(OPTFLAGS) \
+		$(ARCH) \
+		$(DEFINES) \
+		$(INCLUDE)
 
 CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
 
 ASFLAGS	:=	-g $(ARCH)
 LDFLAGS	=	-specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map),-wrap,exit
 
-LIBS	:=	-lctru
-
 #---------------------------------------------------------------------------------
 # list of directories containing libraries, this must be the top level containing
 # include and lib
diff --git a/sysmodules/pxi/Makefile b/sysmodules/pxi/Makefile
index 1cc0b23..58b3251 100644
--- a/sysmodules/pxi/Makefile
+++ b/sysmodules/pxi/Makefile
@@ -28,9 +28,27 @@ INCLUDES	:=	include
 ARCH	:=	-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
 DEFINES :=	-D__3DS__
 
-CFLAGS	:=	-g -std=gnu11 -Wall -Wextra -Werror -O2 -mword-relocations \
-			-fomit-frame-pointer -ffunction-sections -fdata-sections \
-			$(ARCH) $(DEFINES)
+ifeq ($(BUILD_FOR_GDB),1)
+	OPTFLAGS := -O0
+	LIBS := -lctrud
+else
+	OPTFLAGS := -O2 -fomit-frame-pointer
+	LIBS := -lctru
+endif
+
+CFLAGS	:=\
+		-g \
+		-std=gnu11 \
+		-Wall \
+		-Wextra \
+		-Werror \
+		-mword-relocations \
+		-ffunction-sections \
+		-fdata-sections \
+		$(OPTFLAGS) \
+		$(ARCH) \
+		$(DEFINES) \
+		$(INCLUDE)
 
 CFLAGS	+=	$(INCLUDE)
 
@@ -39,8 +57,6 @@ CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
 ASFLAGS	:=	-g $(ARCH)
 LDFLAGS	=	-specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map),-wrap,exit
 
-LIBS	:=	-lctru
-
 #---------------------------------------------------------------------------------
 # list of directories containing libraries, this must be the top level containing
 # include and lib
diff --git a/sysmodules/rosalina/Makefile b/sysmodules/rosalina/Makefile
index 016b11a..99f666b 100644
--- a/sysmodules/rosalina/Makefile
+++ b/sysmodules/rosalina/Makefile
@@ -9,6 +9,12 @@ endif
 TOPDIR ?= $(CURDIR)
 include $(DEVKITARM)/3ds_rules
 
+# Default 3DSX TitleID for hb:ldr (note: also defined in top-level Makefile)
+export HBLDR_DEFAULT_3DSX_TID ?= 000400000D921E00
+
+# What to call the title corresponding to HBLDR_DEFAULT_3DSX_TID (note: also defined in top-level Makefile)
+export HBLDR_DEFAULT_3DSX_TITLE_NAME ?= "hblauncher_loader"
+
 #---------------------------------------------------------------------------------
 # TARGET is the name of the output
 # BUILD is the directory where object files & intermediate files will be placed
@@ -26,7 +32,7 @@ INCLUDES	:=	include include/gdb include/menus include/redshift
 # options for code generation
 #---------------------------------------------------------------------------------
 ARCH	:=	-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
-DEFINES :=	-D__3DS__
+DEFINES :=	-D__3DS__ -DHBLDR_DEFAULT_3DSX_TID="0x$(HBLDR_DEFAULT_3DSX_TID)ULL" -DHBLDR_DEFAULT_3DSX_TITLE_NAME="\"$(HBLDR_DEFAULT_3DSX_TITLE_NAME)\""
 
 FALSEPOSITIVES := -Wno-array-bounds -Wno-stringop-overflow -Wno-stringop-overread
 CFLAGS	:=	-g -std=gnu11 -Wall -Wextra -Werror -Wno-unused-value -Os -mword-relocations \
diff --git a/sysmodules/rosalina/include/luma_shared_config.h b/sysmodules/rosalina/include/luma_shared_config.h
index 222af23..ac7eab2 100644
--- a/sysmodules/rosalina/include/luma_shared_config.h
+++ b/sysmodules/rosalina/include/luma_shared_config.h
@@ -18,9 +18,6 @@
 
 #include <3ds/types.h>
 
-/// Default TitleID for 3DSX loading
-#define HBLDR_DEFAULT_3DSX_TID  0x000400000D921E00ULL
-
 /// Luma shared config type.
 typedef struct LumaSharedConfig {
     u64 hbldr_3dsx_tid;         ///< Title ID to use for 3DSX loading.
diff --git a/sysmodules/rosalina/source/menus/miscellaneous.c b/sysmodules/rosalina/source/menus/miscellaneous.c
index bf76139..2c12907 100644
--- a/sysmodules/rosalina/source/menus/miscellaneous.c
+++ b/sysmodules/rosalina/source/menus/miscellaneous.c
@@ -120,12 +120,20 @@ Menu miscellaneousMenu = {
 };
 int lastNtpTzOffset = 0;
 
+static inline bool compareTids(u64 tidA, u64 tidB)
+{
+    // Just like p9 clears them, ignore platform/N3DS bits
+    return ((tidA ^ tidB) & ~0xF0000000ull) == 0;
+}
+
 void MiscellaneousMenu_SwitchBoot3dsxTargetTitle(void)
 {
     Result res;
     char failureReason[64];
+    u64 currentTid = Luma_SharedConfig->hbldr_3dsx_tid;
+    u64 newTid = currentTid;
 
-    if(Luma_SharedConfig->hbldr_3dsx_tid == HBLDR_DEFAULT_3DSX_TID)
+    if(compareTids(currentTid, HBLDR_DEFAULT_3DSX_TID))
     {
         FS_ProgramInfo progInfo;
         u32 pid;
@@ -133,8 +141,8 @@ void MiscellaneousMenu_SwitchBoot3dsxTargetTitle(void)
         res = PMDBG_GetCurrentAppInfo(&progInfo, &pid, &launchFlags);
         if(R_SUCCEEDED(res))
         {
+            newTid = progInfo.programId;
             Luma_SharedConfig->hbldr_3dsx_tid = progInfo.programId;
-            miscellaneousMenu.items[0].title = "Switch the hb. title to hblauncher_loader";
         }
         else
         {
@@ -145,10 +153,15 @@ void MiscellaneousMenu_SwitchBoot3dsxTargetTitle(void)
     else
     {
         res = 0;
-        Luma_SharedConfig->hbldr_3dsx_tid = HBLDR_DEFAULT_3DSX_TID;
-        miscellaneousMenu.items[0].title = "Switch the hb. title to the current app.";
+        newTid = HBLDR_DEFAULT_3DSX_TID;
     }
 
+    Luma_SharedConfig->hbldr_3dsx_tid = newTid;
+    if (compareTids(newTid, HBLDR_DEFAULT_3DSX_TID))
+        miscellaneousMenu.items[0].title = "Switch the hb. title to the current app.";
+    else
+        miscellaneousMenu.items[0].title = "Switch the hb. title to " HBLDR_DEFAULT_3DSX_TITLE_NAME;
+
     Draw_Lock();
     Draw_ClearFramebuffer();
     Draw_FlushFramebuffer();
diff --git a/sysmodules/sm/Makefile b/sysmodules/sm/Makefile
index a750339..58b3251 100644
--- a/sysmodules/sm/Makefile
+++ b/sysmodules/sm/Makefile
@@ -28,9 +28,27 @@ INCLUDES	:=	include
 ARCH	:=	-march=armv6k -mtune=mpcore -mfloat-abi=hard -mtp=soft
 DEFINES :=	-D__3DS__
 
-CFLAGS	:=	-g -std=gnu11 -Wall -Wextra -Werror -Os -mword-relocations \
-			-fomit-frame-pointer -ffunction-sections -fdata-sections \
-			$(ARCH) $(DEFINES)
+ifeq ($(BUILD_FOR_GDB),1)
+	OPTFLAGS := -O0
+	LIBS := -lctrud
+else
+	OPTFLAGS := -O2 -fomit-frame-pointer
+	LIBS := -lctru
+endif
+
+CFLAGS	:=\
+		-g \
+		-std=gnu11 \
+		-Wall \
+		-Wextra \
+		-Werror \
+		-mword-relocations \
+		-ffunction-sections \
+		-fdata-sections \
+		$(OPTFLAGS) \
+		$(ARCH) \
+		$(DEFINES) \
+		$(INCLUDE)
 
 CFLAGS	+=	$(INCLUDE)
 
@@ -39,8 +57,6 @@ CXXFLAGS	:= $(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++11
 ASFLAGS	:=	-g $(ARCH)
 LDFLAGS	=	-specs=3dsx.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map),-wrap,exit
 
-LIBS	:=	-lctru
-
 #---------------------------------------------------------------------------------
 # list of directories containing libraries, this must be the top level containing
 # include and lib