diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..71f19c6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+/build
+*.elf
+*.self
+*.pkg
diff --git a/ChangeLog.txt b/ChangeLog.txt
index 7cda448..b40d0df 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -1,6 +1,9 @@
+v0.89
+-Add : Support fw 4.83C
+
 v0.88
 -Add : Support IDPS from latest ps3 models
--Add : Dupport fw to dump the eid_root_key
+-Add : eid_root_key dumper is working on almost every cfw
 
 v0.87
 -Added : fw independant
diff --git a/Makefile b/Makefile
index 413bab2..ec2661a 100644
--- a/Makefile
+++ b/Makefile
@@ -15,7 +15,7 @@ include $(PSL1GHT)/ppu_rules
 # SOURCES is a list of directories containing source code
 # INCLUDES is a list of directories containing extra header files
 #---------------------------------------------------------------------------------
-VERSION     := 0.88
+VERSION     := 0.89
 NAME        := IDPSet
 
 TARGET		:= $(NAME)_v$(VERSION)
@@ -139,6 +139,10 @@ run:
 #---------------------------------------------------------------------------------
 pkg:	$(BUILD) $(OUTPUT).pkg
 
+#---------------------------------------------------------------------------------
+payloads:
+	@rm -fr data/payload*
+	@$(MAKE) -C payload/source --no-print-directory
 #---------------------------------------------------------------------------------
 else
 
diff --git a/data/payload_483C.bin b/data/payload_483C.bin
new file mode 100644
index 0000000..bb581d8
Binary files /dev/null and b/data/payload_483C.bin differ
diff --git a/payload/source/Makefile b/payload/source/Makefile
index 6426fbb..b4aff69 100644
--- a/payload/source/Makefile
+++ b/payload/source/Makefile
@@ -16,7 +16,7 @@ endif
 LDFLAGS = -Tldscript.ld -nostartfiles -nostdlib -nodefaultlibs -Wl,--gc-sections -Wl,-Map=$(TARGET)_$@.map
 
 PAYLOADS := 421C 421D 430C 430D 431C 440C 441C 441D 446C 446D 450C 450D 453C 453D 455C 455D 460C \
-			465C 465D 470C 470D 475C 475D 476C 476D 478C 478D 480C 480D 481C 481D 482C 482D
+			465C 465D 470C 470D 475C 475D 476C 476D 478C 478D 480C 480D 481C 481D 482C 482D 483C
 
 define do_payload
 	$(CC) $(ASFLAGS) -DFIRMWARE_$@ -c start.S -o start.S.o
diff --git a/payload/source/symbols.h b/payload/source/symbols.h
index 389e153..ddeece8 100644
--- a/payload/source/symbols.h
+++ b/payload/source/symbols.h
@@ -333,5 +333,15 @@
 	#define GAMEOS_LPAR_SIZE_PTR                 0x80000000003A1240ULL
 #endif
 
+#ifdef FIRMWARE_483C
+	#define KERNEL_TOC			                 0x34FBB0
+	#define KERNEL_SYMBOL_EXTEND_KSTACK          0x0700A4
+	#define KERNEL_SYMBOL_COPY_TO_USER           0x00F86C
+	#define KERNEL_SYMBOL_MEMSET                 0x04D66C
+	#define KERNEL_SYMBOL_MEMCPY                 0x07E92C
+	#define GAMEOS_LPAR_BASE_PTR                 0x800000000037A638ULL
+	#define GAMEOS_LPAR_SIZE_PTR                 0x800000000037A640ULL
+#endif
+
 
 #endif /* __SYMBOLS_H__ */
diff --git a/source/firmware.h b/source/firmware.h
index 45eae9c..c88b9a2 100644
--- a/source/firmware.h
+++ b/source/firmware.h
@@ -431,4 +431,17 @@
 #define OFFSET_1_IDPS_482D       0x8000000000409A30ULL
 #define OFFSET_2_IDPS_482D       0x800000000049CAF4ULL
 
+#define HTAB_OFFSET_483C         0x2DD70C
+#define MMAP_OFFSET1_483C        0x2DCF54
+#define MMAP_OFFSET2_483C        0x2DD284
+#define SPE_OFFSET_483C          0x2F9EB8
+#define HV_START_OFFSET_483C     0x370F28
+#define TOC_OFFSET_483C          0x800000000034FBB0ULL
+#define SYSCALL_TABLE_483C       0x8000000000363BE0ULL
+#define FW_DATE_OFFSET_483C      0x80000000002FCB68ULL
+#define FW_DATE_1_483C           0x323031382F30392FULL
+#define FW_DATE_2_483C           0x30322031353A3233ULL
+#define OFFSET_1_IDPS_483C       0x80000000003E2E30ULL
+#define OFFSET_2_IDPS_483C       0x8000000000474AF4ULL
+
 #endif /* __FIRMWARE_H__ */
diff --git a/source/main.c b/source/main.c
index 3164a97..953f95a 100644
--- a/source/main.c
+++ b/source/main.c
@@ -78,6 +78,7 @@
 #include "payload_481D_bin.h"
 #include "payload_482C_bin.h"
 #include "payload_482D_bin.h"
+#include "payload_483C_bin.h"
 
 #include "NOT_PNG_bin.h"
 
@@ -1015,7 +1016,25 @@ int init_IDPSet()
 
 		payload = (u64 *) payload_482D_bin;
 		payload_size = payload_482D_bin_size;
-	} 
+	}  else
+	if(( lv2peek(FW_DATE_OFFSET_483C    )==FW_DATE_1_483C) &&
+	   ( lv2peek(FW_DATE_OFFSET_483C + 8)==FW_DATE_2_483C) )
+	{
+		firmware = 0x482D;
+
+		TOC_OFFSET = TOC_OFFSET_483C;
+		HV_START_OFFSET = HV_START_OFFSET_483C;
+		HTAB_OFFSET = HTAB_OFFSET_483C;
+		SYSCALL_TABLE_OFFSET = SYSCALL_TABLE_483C;
+		MMAP_OFFSET1 = MMAP_OFFSET1_483C;
+		MMAP_OFFSET2 = MMAP_OFFSET2_483C;
+		SPE_OFFSET = SPE_OFFSET_483C;
+		OFFSET_1_IDPS = OFFSET_1_IDPS_483C;
+		OFFSET_2_IDPS = OFFSET_2_IDPS_483C;
+
+		payload = (u64 *) payload_483C_bin;
+		payload_size = payload_483C_bin_size;
+	}
 	else { // firmware inconnu
 		u64 n;
 		for(n=0x350000; n<0x4A0000; n++) {