Not sure about the both of them comment!!? This happened to me last month,managed to get some power to the car using a battery charger, 2 crocodile clips and the fuseboard in the boot,probably not recomended but it gave me enough power to get the door opened!
there isnt a manual method on both sides when using secret entry method. There is a manual method on both sides for getting out but you have to already be in to get out.
If you can get into the boot somehow? Then you can access the fuse panel and possibly attach some jumper wires to permanent live feeds on the back of the panel? this hopefully will give you enough juice to open the doors
