The relevant text of the deciphered signals is:
CX/JQ/239
2. Late on 19/8 (H)41 sent out its usual report on reconnaissance …
A He 111 crashed 6 km. SE of Les Sables d’Olonne, 200 metres from the beach, and was burnt out. Its markings were 6 + ND [sic], the “D” being painted yellow ...
15. Flieger Korps 5 warned all fighter and heavy-fighter formations as well as OC Flak that He 111 camouflaged for night operations also operate by day. The recognition-markings on sides of the a/c and on under side of wings are painted over in black; but on the upper side they are still clearly distinguishable.
CX/JQ/241
Corrections
Reference CX/JQ/239, paragraph 2, sub-section 3: Source believes that the markings of the He 111 were wrongly quoted in the original document and should be 6N+ND.
In Ken Wakefield's book »Pfadfinder« he says that the aircraft at Les Sables was 60% damaged on 19 August after running out of fuel. He lists it as an H-2 but there are no further details. It was returning from England, so I guess it came down in the early hours of the 19th.