Box type: dm-7020-S

My DM7020-s is out. The Powwersupply had touch the cabinet in the middle and it make a short circuit, this caused various damages. I repaired the power supply but the dream don't come on, there is another short circuit in the microcontroller ATmega8535 that control LCD, panel switches, remote controller, etc. I can buy a new ATmega8535, change it and program it, but I don't have the software to put it inside. Someone have this software?
Please help me.
Thanks you.