How open a cabriolet 2.3 1992 with battery DEAD

[joseprfoto]

My car is battery DEAD THe insurances of both doors are activated by air from the hydraulic bomb The key only open the boot because is mecanychal.
How open any door Where is the pump locking door in the boot ?how voltaje for active this pump ?any photo?
Any idea will be welcome everything less to break a crystal

 

[joseprfoto]

Urgent

 

[joseprfoto]

Connecting another battery to the positive point of the starter below the car energy would offer the battery to open the door?