I am having the same problem. the end of the log looks like this
[19:09:07.0233] update_baseband: requesting baseband firmware data
[19:09:07.0233] update_baseband: received data from host (120521 bytes)
[19:09:07.0233] update_baseband: performing next update stage
[19:09:07.0233] bbupdater: BEGIN: Perform stage at first
[19:09:07.0233] bbupdater: Loading...
[19:09:07.0233] bbupdater: 0x4001a100 of 0x4003d55c (18 percent)
[19:09:07.0233] bbupdater: 0x40022200 of 0x4003d55c (37 percent)
[19:09:07.0233] bbupdater: 0x4002a300 of 0x4003d55c (55 percent)
[19:09:07.0233] bbupdater: 0x40032400 of 0x4003d55c (74 percent)
[19:09:07.0233] bbupdater: 0x4003a500 of 0x4003d55c (93 percent)
[19:09:07.0233] bbupdater: 0x4003d55c of 0x4003d55c (100 percent)
[19:09:07.0233] bbupdater:
[19:09:07.0233] bbupdater: Launching...bbupdater: OK
[19:09:07.0233] bbupdater: END: Perform stage at first
[19:09:07.0233] send_bbupdate_status: sending baseband update status to host
[19:09:07.0233] update_baseband: querying baseband info
[19:09:07.0233] bbupdater: BEGIN: Querying info at stage second
[19:09:07.0233] bbupdater: BEGIN: Preparing Second stage
[19:09:07.0233] bbupdater: Creating transport, attempts remaining 0...bbupdater: OK
[19:09:07.0233] bbupdater: Baseband VendorID [0x5C6] ProductID [0x9008]
[19:09:07.0233] bbupdater: END: Preparing Second stage
[19:09:07.0233] bbupdater: Saying Hello...000352.829661 AppleUSBOHCIPort@3100000::resetAndCreateDevice: failed to address device (0xe00002ed), disabling port
[19:09:07.0233] bbupdater: FAILED(kBBUReturnIOError)
[19:09:07.0233] bbupdater: END(kBBUReturnIOError): Querying info at stage second
[19:09:07.0233] send_bbupdate_status: sending baseband update status to host
[19:09:07.0233] update_baseband: bbupdater error: The operation couldn\U2019t be completed. (BBUpdater error 3 - Failed creating a communication transport to baseband.)
[19:09:07.0233] 0: RamrodErrorDomain/3ec: update_baseband: failed querying baseband info
[19:09:07.0233] 1: BBUpdater/3: Failed creating a communication transport to baseband.
[19:09:07.0233] unable to convert ramrod error 1004
[19:09:07.0233]
[19:09:07.0233] ==== end of device restore output ====
[19:09:07.0291] AMRAuthInstallDeletePersonalizedBundle
[19:09:07.0319] Restore completed, status:3
[19:09:07.0319] Failure Description:
[19:09:07.0319] Depth:0 Error:AMRestorePerformRestoreModeRestoreWithError failed with error: -1
[19:09:07.0319] Depth:1 Error:The operation couldn’t be completed. (AMRestoreErrorDomain error -1 - Failed to handle message type StatusMsg)
[19:09:07.0319] Depth:2 Error:The operation couldn’t be completed. (AMRestoreErrorDomain error -1 - failed to update device firmware)
[19:09:07.0319] Depth:3 Error:The operation couldn’t be completed. (AMRestoreErrorDomain error -1 - ramrod firmware update failed)
[19:09:07.0319] Depth:4 Error:The operation couldn’t be completed. (RamrodErrorDomain error 1004 - update_baseband: failed querying baseband info)
[19:09:07.0319] Depth:5 Error:The operation couldn’t be completed. (BBUpdater error 3 - Failed creating a communication transport to baseband.
Here are the logs:
https://dl.dropboxusercontent.com/u/11203348/Steve43035.Ipad.Updater.Log.7z
Hope you can help.
Steve