avrdude -p at90s8515 -P com3 -c avr910 -e Found programmer: Id = "AVR ISP"; type = S Software Version = 2.3; Hardware Version = 1.0 Programmer supports auto addr increment. Programmer supports the following devices: Device code: 0x55 Device code: 0x56 Device code: 0x5e Device code: 0x13 Device code: 0x20 Device code: 0x28 Device code: 0x38 Device code: 0x48 Device code: 0x4c Device code: 0x34 Device code: 0x30 Device code: 0x6c Device code: 0x68 Device code: 0x65 Device code: 0x60 Device code: 0x64 Device code: 0x42 Device code: 0x41 Device code: 0x76 Device code: 0x74 Device code: 0x72 Device code: 0x43 Device code: 0x3a avrdude: AVR device initialized and ready to accept instructions avrdude: Device signature = 0x01931e avrdude: erasing chip avrdude: done. avrdude done. Thank you. avrdude -p at90s8515 -P com3 -c avr910 -i demo.hex Found programmer: Id = "AVR ISP"; type = S Software Version = 2.3; Hardware Version = 1.0 Programmer supports auto addr increment. Programmer supports the following devices: Device code: 0x55 Device code: 0x56 Device code: 0x5e Device code: 0x13 Device code: 0x20 Device code: 0x28 Device code: 0x38 Device code: 0x48 Device code: 0x4c Device code: 0x34 Device code: 0x30 Device code: 0x6c Device code: 0x68 Device code: 0x65 Device code: 0x60 Device code: 0x64 Device code: 0x42 Device code: 0x41 Device code: 0x76 Device code: 0x74 Device code: 0x72 Device code: 0x43 Device code: 0x3a avrdude: AVR device initialized and ready to accept instructions avrdude: Device signature = 0x01931e avrdude: reading input file "demo.hex" avrdude: input file demo.hex auto detected as Intel Hex avrdude: writing flash (252 bytes): avrdude: serial_recv(): programmer is not responding make.exe: *** [program] Error 1