NAND Dumper in ios examiner doesn't seem to start

[GoogleCodeExporter]

What steps will reproduce the problem?
1.Running Ios examiner
2.nand_dump iphone4_nand.bin
3.

What is the expected output? What do you see instead? Plist folders is there 
with extracted keys, and a nand.bin folder for the dump. But tools just seem to 
freeze after the dump command.  Nothing happens, and nand.bin folder remains 
empty.

C:\Users\*****>Iphone\iphone-dataprotection-a\python_scripts\ios_examiner.py
Connecting to device : 7522308ac74fbe6d06941eaa57e350a774f59d1c
Device model: iPhone 4 GSM
UDID: 7522308ac74fbe6d06941eaa57e350a774f59d1c
ECID: 1002490645932
Serial number: 7U1202C9A4S
key835:**********************************
key89B: **********************************
Chip id 0x32944845 banks per CE physical 1
NAND geometry : 16GB (4 CEs (1 physical banks/CE) of 4096 blocks of 128 pages of
 8192 bytes data, 12 bytes metdata)
NANDDRIVERSIGN not found, assuming metadata withening = 1
Effaceable generation 64
Effaceable CRC OK
Found effaceable lockers in ce 3 block 0 (XXX possibly remapped) page 16
Lockers : BAG1, DONE, Dkey, LwVM
DEVICEUNIQUEINFO not found
Using VSVFL
VSVFL context open OK
YaFTL context OK, version=CX01 maxIndexUsn=2989729 context usn=2989729
LwVM header CRC OK
cprotect version : 4
iOS version:  7.1.2
Keybag state: locked
(HomeÔÇÖs iPhone-data) / bruteforce
Passcode comlexity (from OpaqueStuff) : 4 digits
Enter passcode or leave blank for bruteforce:

Passcode "" OK
Keybag state: unlocked
Save device information plist to [7522308ac7.plist]: iphone4.plist
File already exists, overwrite ? [y/n]: y
(HomeÔÇÖs iPhone-data) / nand_dump iphone4_nand.bin

Here everything just seems to hang (I've waited up to 45 minutes for something 
to happen.)  And when I click out of the cmd prompt I get a "dump aborted" 
message on my phone. 

I am running a prebuilt ramdisk for ios 7.1.2 on a windows 7 64 bit machine.  
Phone is Iphone 4, 7.1.2 with no passcode set. Ramdisk loads as expected.  Can 
copy files individual files through WINSCP, run demo_bruteforce and plist and 
keychaindb download. Did get an ios_examiner error initially and added the 
"utf-8" as per instruction and I was able to type into shell.  Anyway complete 
newbie here so maybe the answer is obvious:)  But any guidance is much 
appreciated. 

Original issue reported on code.google.com by mathiasg...@gmail.com on 23 May 2015 at 5:17