[solved]ATmega168 fuse setting problem

Hi,
I'm having some problems while burning a bootloader to some ATmega168. I'm using an mysmartusb mkII and OS X.

first I'm unlocking

Code:

avrdude -v -pm168 -P /dev/cu.SLAB_USBtoUART -cavr910 -U lock:w:0x3F:m

which seems to work. But then when trying to set the fuses

Code:

avrdude -pm168 -P /dev/cu.SLAB_USBtoUART -v -cavr910 -Uhfuse:w:0xdd:m -Ulfuse:w:0xff:m -e -Uefuse:w:0×00:m

I get:

Code:

avrdude: Version 5.10, compiled on Jul 11 2010 at 18:20:24
   Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
   Copyright (c) 2007-2009 Joerg Wunsch

   System wide configuration file is "/opt/local/etc/avrdude.conf"
   User configuration file is "/Users/cg/.avrduderc"
   User configuration file does not exist or is not a regular file, skipping

   Using Port : /dev/cu.SLAB_USBtoUART
   Using Programmer : avr910
   avr910_devcode (avrdude.conf) : 0x6
   AVR Part : ATMEGA168
   Chip Erase delay : 9000 us
   PAGEL : PD7
   BS2 : PC2
   RESET disposition : dedicated
   RETRY pulse : SCK
   serial program mode : yes
   parallel program mode : yes
   Timeout : 200
   StabDelay : 100
   CmdexeDelay : 25
   SyncLoops : 32
   ByteDelay : 0
   PollIndex : 3
   PollValue : 0x53
   Memory Detail :

   Block Poll Page Polled
   Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
   ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
   eeprom 65 5 4 0 no 512 4 0 3600 3600 0xff 0xff
   flash 65 6 128 0 yes 16384 128 128 4500 4500 0xff 0xff
   lfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
   hfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
   efuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
   lock 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
   calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
   signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00

   Programmer Type : avr910
   Description : Atmel Low Cost Serial Programmer

Found programmer: Id = "AVR ISP"; type = S
   Software Version = 2.5; Hardware Version = 2.0
Programmer supports auto addr increment.
Programmer supports buffered memory access with buffersize = 512 bytes.

Programmer supports the following devices:
   Device code: 0x01 = (unknown)
...

avrdude: avr910_devcode selected: 0x06
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.05s

avrdude: Device signature = 0x1e9406
avrdude: safemode: lfuse reads as FF
avrdude: safemode: hfuse reads as DD
avrdude: safemode: efuse reads as 1
avrdude: erasing chip
avrdude: reading input file "0xdd"
avrdude: writing hfuse (1 bytes):

Writing | ################################################## | 100% 0.01s

avrdude: 1 bytes of hfuse written
avrdude: verifying hfuse memory against 0xdd:
avrdude: load data hfuse data from input file 0xdd:
avrdude: input file 0xdd contains 1 bytes
avrdude: reading on-chip hfuse data:

Reading | ################################################## | 100% 0.01s

avrdude: verifying ...
avrdude: 1 bytes of hfuse verified
avrdude: reading input file "0xff"
avrdude: writing lfuse (1 bytes):

Writing | ################################################## | 100% 0.01s

avrdude: 1 bytes of lfuse written
avrdude: verifying lfuse memory against 0xff:
avrdude: load data lfuse data from input file 0xff:
avrdude: input file 0xff contains 1 bytes
avrdude: reading on-chip lfuse data:

Reading | ################################################## | 100% 0.01s

avrdude: verifying ...
avrdude: 1 bytes of lfuse verified
avrdude: reading input file "0×00"
avrdude: invalid byte value (0×00) specified for immediate mode
avrdude: write to file '0×00' failed

avrdude: safemode: lfuse reads as FF
avrdude: safemode: hfuse reads as DD
avrdude: safemode: efuse reads as 1
avrdude: safemode: Fuses OK

avrdude done. Thank you.

I can then flash the bootloader without problems but only upload an arduino sketch once, since it seems to overwrite the bootloader (might be connected to the invalid extended fuse settings?)

I'd be grateful for any help.
thanks

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