The following ConfigBits must be set to programm the bootloader into the PIC18F4550:


Full speed USB Source Selection:    Clock src from 96MHz PLL/2
CPU System Clock Postscaler:        [OSC1/OSC2 Src; /1][96MHz PLL Src: 
/2]Divide by 5 (20MHz input)
Oscillator:    EC: EC+PLL, EC+PLL+RA6, USB-EC
USB Voltage Regulator:    Enabled
Power Up Timer:    Enabled
Brown Out Detect:    Disabled in hardware, SBOREN disabled
Brown Out Voltage:    4.5V
Watchdog Timer:        Disabled-Controlled by SWDTEN bit
PortB A/D Enable:    PORTB<4:0> configured as digital I/O on Reset
Master Clear Enabled:     Enable MCLR RE3 Disabled

Irgendwie hat Elektor diese Liste aus dem Artikel entfernt. Sorry.