iPhone 5 not restoring!

Hi,

I have an Iphone 5 (A1429) that randomly went into dfu mode... I wasn't able to get out of DFU nor do a restore (itunes would hang on "waiting for device").

After charging the battery for a night (it gots charge now, checked it with voltmeter) i got it to a stage where it is dispaying the itunes logo with usb cable (recovery mode) but i can't get out of that either (tried holding home and power for 10 sec, restarts and goes back into the same recovery mode)

if i connect it to Itunes now, i get it to actually starting to restore but 10 seconds after the status bar displays on both my laptop and iphone, itunes stops with error 14. I already tried re-installing itunes, deleting old IPSW and tried other wifi/ computer. I'm desperate so pleas help, i'm willing to open up my IPhone and i'm in possession of a mac, windows and ubuntu PC.

here is the log i get (only error section):

[15:25:29.0492] Failure Description:

[15:25:29.0492] Depth:0 Error:AMRestorePerformRestoreModeRestoreWithError failed with error: 14

[15:25:29.0492] Depth:1 Error:The operation couldn’t be completed. (AMRestoreErrorDomain error 14 - Failed to handle data request message)

[15:25:29.0492] Depth:2 Error:The operation couldn’t be completed. (AMRestoreErrorDomain error 14 - Failed to handle image request)