Thanks meanwhile, I had not do it before. Insert the SDcard and go to option to be select is "Apply update from SD card"? Unfortunately, the keyboard and mouse neither works under this recovery mode. I will be trying with bluetooth or remote control.
Anyway, one more step...
No you dont apply any update from SD card, if that happens that you see the normal android recovery (happend to me before) that means you probably dont have a correct device tree file on your SD card that fits your android box.
Can you give me some extra info about your box ? maybey I can point you in the right direction. (foto, specs according to supplyer, screenshot android hardware info, ...)