I know this is an OLD topic, but I've tried this onthe 6900, and I get errors reading filesystem including NVM:
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12:02:12.358 LG-VX4400: Listing files in dir: 'nvm'
12:02:12.375 LG-VX4400: Failed to list files in dir nvm
12:02:12.375 LG-VX4400: Listing subdirs in dir: 'nvm'
12:02:12.390 LG-VX4400: Failed to list dir nvm
12:02:14.842 LG-VX4400: Listing files in dir: 'sfs'
12:02:14.858 LG-VX4400: Failed to list files in dir sfs
12:02:14.858 LG-VX4400: Listing subdirs in dir: 'sfs'
12:02:14.875 LG-VX4400: Failed to list dir sfs
12:02:15.655 LG-VX4400: Listing files in dir: 'sms'
12:02:15.703 LG-VX4400: Listing subdirs in dir: 'sms'
etc...
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Also tried newer version of Bitpim, and even tried using Qualcomm USB Modem...
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12:03:27.140 COM5: Opening port COM5, 115200 baud, timeout 3.000000, hardwareflow 0, softwareflow 0
12:03:27.187 COM5: Open of comm port suceeded
12:03:27.187 LG-VX4400: Attempting to contact phone
12:03:27.187 LG-VX4400: Listing subdirs in dir: ''
12:03:30.203 COM5: Timed out - flushing and trying again
12:03:33.217 COM5: Timed out waiting for 7e, requested bytes 1 - 0 bytes read
12:03:33.265 COM5: Changed port speed to 38400
12:03:36.780 COM5: Timed out - flushing and trying again
12:03:39.796 COM5: Timed out waiting for 7e, requested bytes 1 - 0 bytes read
12:03:39.828 COM5: Changed port speed to 115200
12:03:43.342 COM5: Timed out - flushing and trying again
12:03:46.358 COM5: Timed out waiting for 7e, requested bytes 1 - 0 bytes read
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any suggestions as to how one reads NVM filesystem on 6900? QXDM? QPST? - I have both (QXDM 3.09.19) (QPST 2.7) CDMA Workshop doesn't really work either...