unable to tetheredboot

[Casburggraaf]

sh-3.2# sudo ./tetheredboot -i PATH/syringe/utilities/iBSS.n88ap.RELEASE.dfu -k PATH/syringe/utilities/kernelcache.release.n88
Initializing libpois0n
No matching processes were found
Waiting for device to enter DFU mode
Device must be in DFU mode to continue
Device must be in DFU mode to continue
Device must be in DFU mode to continue
Device must be in DFU mode to continue
Device must be in DFU mode to continue
Device must be in DFU mode to continue
Device must be in DFU mode to continue
Device must be in DFU mode to continue
Device must be in DFU mode to continue
Device must be in DFU mode to continue
Device must be in DFU mode to continue
Device must be in DFU mode to continue
opening device 05ac:1227...
Found device in DFU mode
Checking if device is compatible with this jailbreak
Checking the device type
Identified device as iPhone2,1
Preparing to upload limera1n exploit
Resetting device counters
Sending chunk headers
Sending exploit payload
Sending fake data
libusb:error [darwin_transfer_status] transfer error: timed out
Exploit sent
Reconnecting to device
Waiting 2 seconds for the device to pop up...
opening device 05ac:1227...
Uploading /Users/cas/Desktop/iphone shit/syringe/utilities/iBSS.n88ap.RELEASE.dfu to device
[==================================================] 100.0%
libusb:error [darwin_reset_device] ResetDevice: device not responding
libusb:error [darwin_close] USBDeviceClose: no connection to an IOService
Waiting 10 seconds for the device to pop up...
Connection failed. Waiting 1 sec before retry.
Connection failed. Waiting 1 sec before retry.
Connection failed. Waiting 1 sec before retry.
Connection failed. Waiting 1 sec before retry.
Connection failed. Waiting 1 sec before retry.
Connection failed. Waiting 1 sec before retry.
Connection failed. Waiting 1 sec before retry.
Connection failed. Waiting 1 sec before retry.
Connection failed. Waiting 1 sec before retry.
Connection failed. Waiting 1 sec before retry.
Uploading PATH/syringe/utilities/kernelcache.release.n88 to device
Unable to upload kernelcache
Unable to find device

what do i wrong?

[posixninja]

Looks to me like the exploit payload isnt executing properly. But there's just not enough info here to say why. Debugging exploit payload issues has to be done statically and blindly (there's no way to print out debug messages from code running in bootrom). Unless you can figure it out, or I can reproduce, then there's not much hope :-P

[Casburggraaf]

can it not be done with this now
https://github.com/Chronic-Dev/Bootrom-Dumper
i'm running 4.2.1 on a 3GS (new bootrom) on a mac