diff -NarU 6 a/tools/mtk_image.h b/tools/mtk_image.h
Create empty space for sectors 1 to 34.
--- a/tools/mtk_image.h	2021-06-10 20:32:04.156559289 +0200
+++ b/tools/mtk_image.h	2021-06-10 20:32:36.964722097 +0200
@@ -16,13 +16,13 @@
 	struct {
 		char name[12];
 		uint32_t version;
 		uint32_t size;
 	};
 
-	uint8_t pad[0x200];
+	uint8_t pad[34*512];
 };
 
 #define EMMC_BOOT_NAME		"EMMC_BOOT"
 #define SF_BOOT_NAME		"SF_BOOT"
 #define SDMMC_BOOT_NAME		"SDMMC_BOOT"
 
diff -NarU 1 a/tools/mtk_image.c b/tools/mtk_image.c
Increase memory buffer size.
--- a/tools/mtk_image.c    2021-06-11 13:26:11.580666817 +0200
+++ b/tools/mtk_image.c    2021-06-11 13:29:14.024018325 +0200
@@ -63,3 +63,3 @@
 /* GFH header + 2 * 4KB pages of NAND */
-static char hdr_tmp[sizeof(struct gfh_header) + 0x2000];
+static char hdr_tmp[sizeof(struct gfh_header) + 0x2000 + 0x10000];