diff --git a/plat/socionext/synquacer/include/platform_def.h b/plat/socionext/synquacer/include/platform_def.h
index 4938091..a84660b 100644
--- a/plat/socionext/synquacer/include/platform_def.h
+++ b/plat/socionext/synquacer/include/platform_def.h
@@ -54,6 +54,9 @@
 #define BL2_MAILBOX_BASE		0x0403f000
 #define BL2_MAILBOX_SIZE		0x1000
 
+#define PLAT_SQ_BOOTIDX_BASE		0x08510000
+#define PLAT_SQ_MAX_BOOT_INDEX		2
+
 #define MAX_IO_HANDLES			2
 #define MAX_IO_DEVICES			2
 #define MAX_IO_BLOCK_DEVICES	U(1)
@@ -81,7 +84,7 @@
 #define PLAT_SQ_BL33_BASE		0xe0000000
 #define PLAT_SQ_BL33_SIZE		0x00100000
 
-/* FIP IO base */
+/* FWU FIP IO base */
 #define PLAT_SQ_FIP_IOBASE		0x08600000
 #define PLAT_SQ_FIP_MAXSIZE		0x00400000
 
diff --git a/plat/socionext/synquacer/sq_io_storage.c b/plat/socionext/synquacer/sq_io_storage.c
index 3991c9e..ea83dad 100644
--- a/plat/socionext/synquacer/sq_io_storage.c
+++ b/plat/socionext/synquacer/sq_io_storage.c
@@ -156,10 +156,38 @@
 #endif
 };
 
+static int sq_update_fip_spec(void)
+{
+	uint32_t boot_index;
+	int ret;
+
+	ret = mmap_add_dynamic_region(PLAT_SQ_BOOTIDX_BASE, PLAT_SQ_BOOTIDX_BASE,
+				      PAGE_SIZE, MT_RO_DATA | MT_SECURE);
+	if (ret) {
+		return ret;
+	}
+
+	boot_index = mmio_read_32(PLAT_SQ_BOOTIDX_BASE);
+	if (boot_index < PLAT_SQ_MAX_BOOT_INDEX) {
+		sq_fip_spec.offset += PLAT_SQ_FIP_MAXSIZE * boot_index;
+		INFO("FWU Enabled: boot_index %d\n", boot_index);
+	} else {
+		WARN("FWU Disabled: wrong boot_index value. Fallback to index 0.\n");
+	}
+
+	mmap_remove_dynamic_region(PLAT_SQ_BOOTIDX_BASE, PAGE_SIZE);
+	return 0;
+}
+
 static int sq_io_memmap_setup(void)
 {
 	int ret;
 
+	ret = sq_update_fip_spec();
+	if (ret) {
+		return ret;
+	}
+
 	ret = mmap_add_dynamic_region(sq_fip_spec.offset, sq_fip_spec.offset,
 				      sq_fip_spec.length, MT_RO_DATA | MT_SECURE);
 	if (ret) {