Matlab vpa scientific notationSignature = 1E 95 0F Processor = ATmega328P Flash memory size = 32768 LFuse = FF HFuse = DA EFuse = FD Lock byte = FF Bootloader in use: Yes EEPROM preserved through erase: No Watchdog timer always on: No Bootloader is 2048 bytes starting at 7800 Bootloader: 7800: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 7810: FF FF FF FF FF FF FF FF FF ...Macro keypad with knobHere is the complete path for Arduino 1.x in windows - C:\Program Files (x86)\Arduino\hardware\arduino\avr\bootloaders\optiboot\optiboot_atmega328.hex you can also download from here Next, you need to install AVRdude software and USBasp Programmer Driver .