diff --git a/src/bsc_hack.c b/src/bsc_hack.c
index f673fd1..1f454e4 100644
--- a/src/bsc_hack.c
+++ b/src/bsc_hack.c
@@ -359,9 +359,11 @@
     Access Control Class = 0000
 */
 static const u_int8_t si1[] = {
-	0x55, 0x06, 0x19, 0x04 /*0x00*/, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /*0x01*/,0xD5, 
-	0x00, 0x00, 0x2B
+	/* header */0x55, 0x06, 0x19,
+	/* ccdesc */0x04 /*0x00*/, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /*0x01*/,
+	/* rach */0xD5, 0x00, 0x00,
+	/* s1 reset*/0x2B
 };
 
 /*
@@ -380,9 +382,11 @@
     Access Control Class = 0000
 */
 static const u_int8_t si2[] = {
-	0x59, 0x06, 0x1A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xD5, 0x00,
-	0x00
+	/* header */0x59, 0x06, 0x1A,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	/* ncc */0xFF,
+	/* rach*/0xD5, 0x00, 0x00
 };
 
 /*
@@ -424,9 +428,14 @@
     Scheduling Information is not sent in SYSTEM INFORMATION TYPE 9 on the BCCH
 */
 unsigned char si3[] = {
-	0x49, 0x06, 0x1B, 0x00, 0x01, 0x00, 0xF1, 0x10, 0x00, 0x01,
-	0x01, 0x03, 0x00, 0x28, 0x62, 0x00, 0xD5, 0x00, 0x00, 0x80,
-	0x00, 0x00, 0x2B
+	/* header */0x49, 0x06, 0x1B,
+	/* cell */0x00, 0x01,
+	/* lai  */0x00, 0xF1, 0x10, 0x00, 0x01,
+	/* desc */0x01, 0x03, 0x00,
+	/* option*/0x28,
+	/* selection*/0x62, 0x00,
+	/* rach */0xD5, 0x00, 0x00,
+	/* reset*/0x80, 0x00, 0x00, 0x2B
 };
 
 /*
@@ -459,8 +468,11 @@
     Penalty Time = 20 s
 */
 static const u_int8_t si4[] = {
-	0x41, 0x06, 0x1C, 0x00, 0xF1, 0x10, 0x00, 0x01, 0x62, 0x00, 
-	0xD5, 0x00, 0x00, 0x64, 0x30, 0xE0, HARDCODED_ARFCN/*0x01*/, 0x80, 0x00, 0x00, 
+	/* header */0x41, 0x06, 0x1C,
+	/* lai */0x00, 0xF1, 0x10, 0x00, 0x01,
+	/* sel */0x62, 0x00,
+	/* rach*/0xD5, 0x00, 0x00,
+	/* var */0x64, 0x30, 0xE0, HARDCODED_ARFCN/*0x01*/, 0x80, 0x00, 0x00,
 	0x2B, 0x2B, 0x2B
 };
 
@@ -474,8 +486,9 @@
 */
 
 static const u_int8_t si5[] = {
-	0x06, 0x1D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+	/* header without l2 len*/0x06, 0x1D,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 };
 
 // SYSTEM INFORMATION TYPE 6
@@ -499,7 +512,11 @@
 */
 
 static const u_int8_t si6[] = {
-	0x06, 0x1E, 0x00, 0x01, 0x00, 0xF1, 0x10, 0x00, 0x01, 0x28, 0xFF, 
+	/* header */0x06, 0x1E,
+	/* cell id*/ 0x00, 0x01,
+	/* lai */ 0x00, 0xF1, 0x10, 0x00, 0x01,
+	/* options */ 0x28,
+	/* ncc */ 0xFF,
 };