Ive been working on the Arduino serial bootloader, and one of the things that has struck me is that all the serial bootloaders Im aware of use a serial pr. No longer support for Megaload History. MegaLoad is a Windows based boot loader for all Atmel ATMega microcontrollers that support the Bootloader function. AVR serial and parallel High Voltage programmer This programmer isnt widely popular as usually is easier to use ISP programming method. But sometimes if you need to disable RESET pin and use it as regular pin instead or you want to disable or restore SPI fuses who control ISP programming method, then you will need High Voltage parallel programmer of AVR microcontrollers. One of programmers available in the wide internet is HVProg. This is a redesign of STK5. This programmer supports all available AVR microcontrollers in every programming mode and is compatible with AVRstudio. In HVProg there are two versions of programmer The Basic Version has separate connectors6 Pin ISP, 1. Pin ISP, Serial HV programming, Parallel HV programming for the different programming modes it needs a stabilized 5. V and 1. 2V input voltages. The Advanced Version needs an un stabilized input voltage of at least 1. V AC or DC. It has 6 Pin ISP and 2. ISP, parallel and serial high voltage programming. Usb 2.0 To Sata Ide Cable Instructions'>Usb 2.0 To Sata Ide Cable Instructions. The original ATMEL firmware is available in. Avr. Prog included in Avr. X/bd1f2f620ce2b99a463b14d158ff6b82e82c9074.jpg' alt='Serial Boot Loader Avr' title='Serial Boot Loader Avr' />AVR Bootloader and Programmer. AVR Bootloader. delays into the serial communications to adapt the speed of the PC to the bootloader or serial. USART Universal Synchronous and Asynchronous serial Receiver and Transmitter. Introduction How to Change Fuse Bits of AVR Atmega328p 8bit Microcontroller Using Arduino. Studio. Stk. 50. When you have the original Avr. At. 90s. 85. 35 or Mega. Connect the ISP programming adapter with your computer and the ISP port on the HVProg board Mount the Self programming jumper to pin 1,2 Connect the power supply Start Avr. Twilight Princess Wii Iso Pal To Ntsc. Prog Select stk. Mega. Flash the firmware Disconnect power supply and then the programming adapter Mount the Self programming jumper back to pin 2,3.