Airbus has tested a firefighting kit on an A400M in Spain:
Airbus has successfully tested a removable firefighting demonstrator kit on the A400M new generation airlifter during a flight test campaign in Spain.
43 Grupo, mentioned in the link, is the Spanish Air Force unit operating their CL-215 fleet.
I am not sure whether this kit isn't actually identical to the one AKKA Technologies announced last month (below), i.e. whether this is a test for the AKKA kit on A400M. That one has been under development between French engineering company AKKA, German aircraft component company PFW and specialist firefighting kit company Rosenbauer for about a year now. Performance keys look virtually identical and timing is about right for a 11-month rapid development to prototype.
The Airbus A400M soon to be used as a firefighting aircraft ?. AKKA Technologies has just developed a turnkey conversion solution to be able to add a new auxiliary capability to the Airbus A400M, the C295 and the CN-235 military transport aircraft,
AKKA has existing contracts for A400M support with the Spanish Air Force and has former Airbus D&S staff on their payroll.