Tim,

burning the bootloader with Arduino's IDE, I set verbose mode and copied to a .txt file that I read afterwards:

• Step 1, burning the fuses, everything is fine
• Step 2, writing to the flash. The .hex file is 4,973 bytes long but avrdude reports that it's 261,842 bytes long (the size of the Flash memory)  . Then it writes the flash, can't tell how many bytes, but not that much. Then it reads to verify, all of the Flash memory (why ?), and verify is Ok.
• Step 3, the lock bit. I see 'reading input file "0xCF" (what is that ?) and the verify fails.

But the bootloader is correctly burned. I know because I tried uploading my program to a second board I haven't burned the bootloader to, no success. I burned the bootloader and afterwards was able to upload the program.

SparkFun told me how they proceed to burn the bottloader. They use stk500.exe to burn the bootloader. Looking at the log I see this:
Quote:

I know that stk500 is a protocol. Is STK500V2 a different protocol that stk500 (maybe slightly) that would trigger an error at the lock bit ? Do you what's the use of the lock bit ? Wiring talks about stk500 and stk500 v2 as two kinds of bootloader. It's really confusing  .

Thanks

Hi Gilles.

1)
Thanks for the email which says that the programmers menu is mostly disabled.

Please copy the programmers.txt from hardware\arduino\avr to your custom hardware folder then click tools>reload toolchains

2)

The file you sent contained two verbose outputs from bootloader upload shown below.

The first reported it worked correctly the 2nd report an error. the first did not contain a bootloader.hex file but the 2nd did.

In what order did you add these two outputs and from which ide's were they produced.

Thanks

C:\Program Files (x86)\Arduino 1.0\hardware/tools/avr/bin/avrdude -CC:\Program Files (x86)\Arduino 1.0\hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega2560 -cstk500v2 -Pusb -e -Uefuse:w:0xFD:m -Uhfuse:w:0xD4:m -Ulfuse:w:0xE2:m
 

C:\Program Files (x86)\Arduino 1.0\hardware/tools/avr/bin/avrdude -CC:\Program Files (x86)\Arduino 1.0\hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega2560 -cstk500v2 -Pusb -Uflash:w:C:\Program Files (x86)\Arduino 1.0\hardware\mega-pro-3.3V\bootloaders\Megapro3-3\MegaPro3.3V-8MHz-57600.hex:i -Ulock:w:0xCF:m
 

the commands look identical to me? I will need to look at the arduino source to see if there is a pause Visual Micro is missing. 

So to be clear. The first email you sent was from the arduino ide and the second was visual micro?

Thanks

Oh thanks didn't see the name on the end.