diff --git a/tools/firmware-utils/src/trx.c b/tools/firmware-utils/src/trx.c
index 4af17cf1c5..426a6b5834 100644
--- a/tools/firmware-utils/src/trx.c
+++ b/tools/firmware-utils/src/trx.c
@@ -53,8 +53,10 @@
 
 #if __BYTE_ORDER == __BIG_ENDIAN
 #define STORE32_LE(X)		bswap_32(X)
+#define LOAD32_LE(X)		bswap_32(X)
 #elif __BYTE_ORDER == __LITTLE_ENDIAN
 #define STORE32_LE(X)		(X)
+#define LOAD32_LE(X)		(X)
 #else
 #error unkown endianness!
 #endif
@@ -262,12 +264,12 @@ int main(int argc, char **argv)
 
 	/* for TRXv2 set bin-header Flags to 0xFF for CRC calculation like CFE does */ 
 	if (trx_version == 2) {
-		if(cur_len - p->offsets[3] < sizeof(binheader)) {
+		if(cur_len - LOAD32_LE(p->offsets[3]) < sizeof(binheader)) {
 			fprintf(stderr, "TRXv2 binheader too small!\n");
 			return EXIT_FAILURE;
 		}
-		memcpy(binheader, buf + p->offsets[3], sizeof(binheader)); /* save header */
-		memset(buf + p->offsets[3] + 22, 0xFF, 8); /* set stable and try1-3 to 0xFF */
+		memcpy(binheader, buf + LOAD32_LE(p->offsets[3]), sizeof(binheader)); /* save header */
+		memset(buf + LOAD32_LE(p->offsets[3]) + 22, 0xFF, 8); /* set stable and try1-3 to 0xFF */
 	}
 
 	p->crc32 = crc32buf((char *) &p->flag_version,
@@ -275,10 +277,11 @@ int main(int argc, char **argv)
 	p->crc32 = STORE32_LE(p->crc32);
 
 	p->len = (fsmark)?fsmark:cur_len - offsetof(struct trx_header, flag_version);
+	p->len = STORE32_LE(p->len);
 
 	/* restore TRXv2 bin-header */
 	if (trx_version == 2) {
-		memcpy(buf + p->offsets[3], binheader, sizeof(binheader));
+		memcpy(buf + LOAD32_LE(p->offsets[3]), binheader, sizeof(binheader));
 	}
 
 	if (!fwrite(buf, cur_len, 1, out) || fflush(out)) {