diff --git a/ble_issue_tracker.md b/ble_issue_tracker.md
index e286f03..da787e6 100644
--- a/ble_issue_tracker.md
+++ b/ble_issue_tracker.md
@@ -10,6 +10,12 @@ D3. Simplify the IO Pin Service, possible to expose the edge connector pins only
 
 D5. Generic Attribute Service: profile design doc/report doesn’t show it and it’s mandatory (issue with Bluetooth Developer Studio). 
 
+D9. DFU services uses a different base UUID to the other custom services. Is this deliberate?
+
+D10. Characteristics in the DFU service use a different base UUID to the parent service. Is this deliberate?
+
+D11. What are the data types for DFU Control and DFU Flash Code? Assumed uint8 and array of uint8.
+
 
 CLOSED:
 
@@ -25,6 +31,8 @@ D7. Why does LED Matrix State support “Write Without Response”? I think this
 
 D8. MicroBit Requirements supports Write. This is (ironically and puntastically) wrong. Client should not be able to modify the requirements the MicroBit has. Changed.
 
+D12. Microbit DFU service not in the profile design. Added. Needs descriptions and data types confirming.
+
 
 Profile Testing
 ---------------