avrdude: warning: cannot set sck period. please check for usbasp firmware update. avrdude: AVR device initialized and ready to accept instructions Reading | ################################################## | 100% 0.00s avrdude: Device signature = 0x1e9782 (probably usb1287) avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed To disable this feature, specify the -D option. avrdude: erasing chip avrdude: warning: cannot set sck period. please check for usbasp firmware update. avrdude: reading input file "bootloader_at90usb128x_1_0_1.hex" avrdude: writing flash (131072 bytes): Writing | ################################################## | 100% 0.00s avrdude: 131072 bytes of flash written avrdude: verifying flash memory against bootloader_at90usb128x_1_0_1.hex: avrdude: load data flash data from input file bootloader_at90usb128x_1_0_1.hex: avrdude: input file bootloader_at90usb128x_1_0_1.hex contains 131072 bytes avrdude: reading on-chip flash data: Reading | ################################################## | 100% 0.00s avrdude: verifying ... avrdude: verification error, first mismatch at byte 0x1e000 0x00 != 0x0c avrdude: verification error; content mismatch avrdude: safemode: lfuse changed! Was 5e, and is now 0 Would you like this fuse to be changed back? [y/n] n avrdude: safemode: hfuse changed! Was 99, and is now 0 Would you like this fuse to be changed back? [y/n] n avrdude: safemode: efuse changed! Was f2, and is now 0 Would you like this fuse to be changed back? [y/n] n avrdude: safemode: Fuses OK (E:F2, H:99, L:5E) avrdude done. Thank you.