diff --git a/controlblock.go b/controlblock.go
index ad36a98..4dfe3fd 100644
--- a/controlblock.go
+++ b/controlblock.go
@@ -284,7 +284,7 @@ func ParseControlBlock(data []byte) (*ControlBlock, error) {
 		cb.Data = &Preamble{}
 		break
 	default:
-		return nil, fmt.Errorf("dmr: unknown CSBK opcode %#02x (%#06b)", cb.Opcode, cb.Opcode)
+		return nil, fmt.Errorf("dmr: unknown CSBK opcode %02x (%06b)", cb.Opcode, cb.Opcode)
 	}
 
 	if err := cb.Data.Parse(data); err != nil {
diff --git a/data.go b/data.go
index f2cc79b..049f812 100644
--- a/data.go
+++ b/data.go
@@ -54,6 +54,7 @@ func ParseDataBlock(data []byte, dataType uint8, confirmed bool) (*DataBlock, er
 			return nil, fmt.Errorf("dmr: block CRC error (%#04x != %#04x)", crc, db.CRC)
 		}
 	} else {
+		db.Data = make([]byte, db.Length)
 		copy(db.Data, data[:db.Length])
 	}
 
@@ -163,7 +164,7 @@ func (df *DataFragment) DataBlocks(dataType uint8, confirm bool) ([]*DataBlock,
 
 		store := int(block.Length)
 		if df.Stored-stored < store {
-			store = df.Stored - store
+			store = df.Stored - stored
 		}
 		copy(block.Data, df.Data[stored:stored+store])
 		stored += store
diff --git a/dataheader.go b/dataheader.go
index c7ac1da..f0e0c5e 100644
--- a/dataheader.go
+++ b/dataheader.go
@@ -222,7 +222,7 @@ func (h *DataHeader) Bytes() ([]byte, error) {
 	if h.HeaderCompression {
 		data[0] |= B00100000
 	}
-	data[1] = (h.ServiceAccessPoint & B00001111)
+	data[1] = (h.ServiceAccessPoint << 4) & B11110000
 	data[2] = uint8(h.DstID >> 16)
 	data[3] = uint8(h.DstID >> 8)
 	data[4] = uint8(h.DstID)
@@ -350,7 +350,7 @@ type ResponseData struct {
 }
 
 func (d ResponseData) String() string {
-	return fmt.Sprintf("response, blocks %d, type %s (%#02b %#03b), status %d",
+	return fmt.Sprintf("response, blocks %d, type %s (%02b %03b), status %d",
 		d.BlocksToFollow, ResponseTypeName[d.ClassType], (d.ClassType >> 3), (d.ClassType & 0x07), d.Status)
 }
 
diff --git a/dataheader_test.go b/dataheader_test.go
index 19562a0..4e780f8 100644
--- a/dataheader_test.go
+++ b/dataheader_test.go
@@ -211,7 +211,7 @@ func TestDataHeaderShortDataDefined(t *testing.T) {
 		t.Fatalf("decode failed: appended blocks wrong")
 
 	case d.DDFormat != DDFormatUTF16:
-		t.Fatalf("decode failed: dd format wrong, expected UTF-16, got %d", DDFormatName[d.DDFormat])
+		t.Fatalf("decode failed: dd format wrong, expected UTF-16, got %s", DDFormatName[d.DDFormat])
 
 	case d.Resync:
 		t.Fatalf("decode failed: rsync bit wrong")
diff --git a/homebrew/homebrew.go b/homebrew/homebrew.go
index 479c8ac..5a6f753 100644
--- a/homebrew/homebrew.go
+++ b/homebrew/homebrew.go
@@ -254,7 +254,8 @@ func (h *Homebrew) WriteToPeerWithID(b []byte, id uint32) error {
 }
 
 func (h *Homebrew) checkRepeaterID(id []byte) bool {
-	return id != nil && bytes.Equal(id, h.id)
+	// BrandMeister release 20190421-185653 switched from upper case to lower case hex digits
+	return id != nil && bytes.EqualFold(id, h.id)
 }
 
 func (h *Homebrew) getPeer(id uint32) *Peer {