diff --git a/source/hos/pkg1.c b/source/hos/pkg1.c
index 21c7e60..183bd63 100644
--- a/source/hos/pkg1.c
+++ b/source/hos/pkg1.c
@@ -34,6 +34,7 @@ static const pkg1_id_t _pkg1_ids[] = {
 	{ "20181218175730", 7 }, //7.0.0
 	{ "20190208150037", 7 }, //7.0.1
 	{ "20190314172056", 7 }, //8.0.0
+	{ "20190531152432", 8 }, //8.1.0
 	{ NULL } //End.
 };
 
diff --git a/source/hos/sept.c b/source/hos/sept.c
index 129c585..d31f83a 100644
--- a/source/hos/sept.c
+++ b/source/hos/sept.c
@@ -59,15 +59,15 @@ extern boot_cfg_t b_cfg;
 extern void sd_unmount();
 extern void reloc_patcher(u32 payload_dst, u32 payload_src, u32 payload_size);
 
-int reboot_to_sept(const u8 *tsec_fw)
+int reboot_to_sept(const u8 *tsec_fw, const u32 tsec_size, const u32 kb)
 {
 	FIL fp;
 
 	// Copy warmboot reboot code and TSEC fw.
 	memcpy((u8 *)(SEPT_PK1T_ADDR - WB_RST_SIZE), (u8 *)warmboot_reboot, sizeof(warmboot_reboot));
-	memcpy((void *)SEPT_PK1T_ADDR, tsec_fw, 0x3000);
-	*(vu32 *)SEPT_TCSZ_ADDR = 0x3000;
-	
+	memcpy((void *)SEPT_PK1T_ADDR, tsec_fw, tsec_size);
+	*(vu32 *)SEPT_TCSZ_ADDR = tsec_size;
+
 	// Copy sept-primary.
 	if (f_open(&fp, "sd:/sept/sept-primary.bin", FA_READ))
 		goto error;
@@ -80,7 +80,9 @@ int reboot_to_sept(const u8 *tsec_fw)
 	f_close(&fp);
 
 	// Copy sept-secondary.
-	if (f_open(&fp, "sd:/sept/sept-secondary.enc", FA_READ))
+	if ((kb == 7) && f_open(&fp, "sd:/sept/sept-secondary.enc", FA_READ) && f_open(&fp, "sd:/sept/sept-secondary_00.enc", FA_READ))
+		goto error;
+	else if ((kb == 8) && f_open(&fp, "sd:/sept/sept-secondary_01.enc", FA_READ))
 		goto error;
 
 	if (f_read(&fp, (u8 *)SEPT_STG2_ADDR, f_size(&fp), NULL))
diff --git a/source/hos/sept.h b/source/hos/sept.h
index b23223b..01bd845 100644
--- a/source/hos/sept.h
+++ b/source/hos/sept.h
@@ -19,6 +19,6 @@
 
 #include "../utils/types.h"
 
-int reboot_to_sept(const u8 *tsec_fw);
+int reboot_to_sept(const u8 *tsec_fw, const u32 tsec_size, const u32 kb);
 
 #endif
diff --git a/source/keys/key_sources.inl b/source/keys/key_sources.inl
index 9fd6314..536c41b 100644
--- a/source/keys/key_sources.inl
+++ b/source/keys/key_sources.inl
@@ -26,8 +26,9 @@ static const u8 keyblob_key_source[][0x10] = {
 };
 
 static const u8 master_kek_sources[KB_FIRMWARE_VERSION_MAX - KB_FIRMWARE_VERSION_600][0x10] = {
-    {0x37, 0x4B, 0x77, 0x29, 0x59, 0xB4, 0x04, 0x30, 0x81, 0xF6, 0xE5, 0x8C, 0x6D, 0x36, 0x17, 0x9A},
-    {0x9A, 0x3E, 0xA9, 0xAB, 0xFD, 0x56, 0x46, 0x1C, 0x9B, 0xF6, 0x48, 0x7F, 0x5C, 0xFA, 0x09, 0x5C}
+    {0x37, 0x4B, 0x77, 0x29, 0x59, 0xB4, 0x04, 0x30, 0x81, 0xF6, 0xE5, 0x8C, 0x6D, 0x36, 0x17, 0x9A}, //6.2.0
+    {0x9A, 0x3E, 0xA9, 0xAB, 0xFD, 0x56, 0x46, 0x1C, 0x9B, 0xF6, 0x48, 0x7F, 0x5C, 0xFA, 0x09, 0x5C}, //7.0.0
+    {0xDE, 0xDC, 0xE3, 0x39, 0x30, 0x88, 0x16, 0xF8, 0xAE, 0x97, 0xAD, 0xEC, 0x64, 0x2D, 0x41, 0x41}, //8.1.0
 };
 
 static const u8 mkey_vectors[KB_FIRMWARE_VERSION_MAX+1][0x10] =
@@ -40,6 +41,7 @@ static const u8 mkey_vectors[KB_FIRMWARE_VERSION_MAX+1][0x10] =
     {0xEB, 0xF5, 0x6F, 0x83, 0x61, 0x9E, 0xF8, 0xFA, 0xE0, 0x87, 0xD7, 0xA1, 0x4E, 0x25, 0x36, 0xEE}, /* Master key 04 encrypted with Master key 05. */
     {0x1E, 0x1E, 0x22, 0xC0, 0x5A, 0x33, 0x3C, 0xB9, 0x0B, 0xA9, 0x03, 0x04, 0xBA, 0xDB, 0x07, 0x57}, /* Master key 05 encrypted with Master key 06. */
     {0xA4, 0xD4, 0x52, 0x6F, 0xD1, 0xE4, 0x36, 0xAA, 0x9F, 0xCB, 0x61, 0x27, 0x1C, 0x67, 0x65, 0x1F}, /* Master key 06 encrypted with Master key 07. */
+    {0xEA, 0x60, 0xB3, 0xEA, 0xCE, 0x8F, 0x24, 0x46, 0x7D, 0x33, 0x9C, 0xD1, 0xBC, 0x24, 0x98, 0x29}, /* Master key 07 encrypted with Master key 08. */
 };
 
 //======================================Keys======================================//
diff --git a/source/keys/keys.c b/source/keys/keys.c
index 3b1c1d2..2ef6a13 100644
--- a/source/keys/keys.c
+++ b/source/keys/keys.c
@@ -135,6 +135,10 @@ void dump_keys() {
         goto out_wait;
     }
 
+    tsec_key_data_t *key_data = (tsec_key_data_t *)(tsec_ctxt.fw + TSEC_KEY_DATA_ADDR);
+    tsec_ctxt.pkg1 = pkg1;
+    tsec_ctxt.size = 0x100 + key_data->blob0_size + key_data->blob1_size + key_data->blob2_size + key_data->blob3_size + key_data->blob4_size;
+
     u32 MAX_KEY = 6;
     if (pkg1_id->kb >= KB_FIRMWARE_VERSION_620)
         MAX_KEY = pkg1_id->kb + 1;
@@ -149,8 +153,8 @@ void dump_keys() {
             // bundle lp0 fw for sept instead of loading it from SD as hekate does
             sdram_lp0_save_params(sdram_get_params_patched());
             FIL fp;
-            if (f_stat("sd:/sept/sept-primary.bin", NULL) || f_stat("sd:/sept/sept-secondary.enc", NULL)) {
-                EPRINTF("On firmware 7.x or higher but no sept payload present\nSkipping new key derivation...");
+            if (f_stat("sd:/sept", NULL)) {
+                EPRINTF("On firmware 7.x+ but Sept missing.\nSkipping new key derivation...");
                 goto get_tsec;
             }
             // backup post-reboot payload
@@ -164,7 +168,7 @@ void dump_keys() {
             gfx_printf("%kFirmware 7.x or higher detected.\n%kRenamed /sept/payload.bin", colors[0], colors[1]);
             gfx_printf("\n%k     to /sept/payload.bak\n%kCopied self to /sept/payload.bin",colors[2], colors[3]);
             sdmmc_storage_end(&storage);
-            if (!reboot_to_sept((u8 *)tsec_ctxt.fw))
+            if (!reboot_to_sept((u8 *)tsec_ctxt.fw, tsec_ctxt.size, pkg1_id->kb))
                 goto out_wait;
         } else {
             se_aes_key_read(12, master_key[pkg1_id->kb], 0x10);
@@ -174,14 +178,6 @@ void dump_keys() {
 get_tsec: ;
     u8 tsec_keys[0x10 * 2] = {0};
 
-    tsec_key_data_t *key_data = (tsec_key_data_t *)(tsec_ctxt.fw + TSEC_KEY_DATA_ADDR);
-    tsec_ctxt.pkg1 = pkg1;
-    tsec_ctxt.size = 0x100 + key_data->blob0_size + key_data->blob1_size + key_data->blob2_size + key_data->blob3_size + key_data->blob4_size;
-    if (pkg1_id->kb >= KB_FIRMWARE_VERSION_700) {
-        // Exit after TSEC key generation.
-        *((vu16 *)((u32)tsec_ctxt.fw + 0x2DB5)) = 0x02F8;
-    }
-
     if (pkg1_id->kb == KB_FIRMWARE_VERSION_620) {
         u8 *tsec_paged = (u8 *)page_alloc(3);
         memcpy(tsec_paged, (void *)tsec_ctxt.fw, tsec_ctxt.size);
@@ -404,6 +400,7 @@ get_tsec: ;
             alignment = 8;
             break;
         case KB_FIRMWARE_VERSION_700:
+        case KB_FIRMWARE_VERSION_810:
             start_offset = 0x29c50;
             hks_offset_from_end -= 0x6a73;
             alignment = 8;
@@ -553,6 +550,7 @@ pkg2_done:
                 start_offset = 0x5674;
                 break;
             case KB_FIRMWARE_VERSION_700:
+            case KB_FIRMWARE_VERSION_810:
                 start_offset = 0x5563;
                 break;
             }
@@ -603,6 +601,7 @@ pkg2_done:
                 start_offset = 0x1d5be;
                 break;
             case KB_FIRMWARE_VERSION_700:
+            case KB_FIRMWARE_VERSION_810:
                 start_offset = 0x1d437;
                 break;
             }
@@ -716,6 +715,7 @@ key_output: ;
     SAVE_KEY_FAMILY("master_kek", master_kek, MAX_KEY, 0x10);
     SAVE_KEY("master_kek_source_06", master_kek_sources[0], 0x10);
     SAVE_KEY("master_kek_source_07", master_kek_sources[1], 0x10);
+    SAVE_KEY("master_kek_source_08", master_kek_sources[2], 0x10);
     SAVE_KEY_FAMILY("master_key", master_key, MAX_KEY, 0x10);
     SAVE_KEY("master_key_source", master_key_source, 0x10);
     SAVE_KEY_FAMILY("package1_key", package1_key, 6, 0x10);
diff --git a/source/utils/types.h b/source/utils/types.h
index 5f9ccf3..d8ecd2f 100644
--- a/source/utils/types.h
+++ b/source/utils/types.h
@@ -34,7 +34,8 @@
 #define KB_FIRMWARE_VERSION_600 5
 #define KB_FIRMWARE_VERSION_620 6
 #define KB_FIRMWARE_VERSION_700 7
-#define KB_FIRMWARE_VERSION_MAX KB_FIRMWARE_VERSION_700
+#define KB_FIRMWARE_VERSION_810 8
+#define KB_FIRMWARE_VERSION_MAX KB_FIRMWARE_VERSION_810
 
 #define HOS_PKG11_MAGIC 0x31314B50