V490: No response from device

[biji]

Reopen: https://github.com/openpst/openpst/issues/2

Tried to revive my old tablet (LG V490), entered 9008 dload mode (press up+down while boot)

[57516.710926] usb 2-3: New USB device found, idVendor=05c6, idProduct=9008 [57516.710931] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [57516.710934] usb 2-3: Product: QHSUSB__BULK [57516.710937] usb 2-3: Manufacturer: Qualcomm CDMA Technologies MSM [57516.712252] qcserial 2-3:1.0: Qualcomm USB modem converter detected [57516.712585] usb 2-3: Qualcomm USB modem converter now attached to ttyUSB0

Try to connect using sahara, connected, but all command failed like Read serial number always return No response from device Kindly need help thanks

Attached output of app and debug log:

Found 33 devices
/dev/ttyUSB0 USB VID:PID=05c6:9008  Qualcomm CDMA Technologies MSM QHSUSB__BULK 
Connected to /dev/ttyUSB0
No data waiting. Not in sahara mode, already in a session, or device requires a restart.
Unexpected or unsupported mode
Unexpected or unsupported mode
Unexpected or unsupported mode
No response from device
No response from device
Requesting mode switch from Image Transfer Pending (0x00) to Image Transfer Pending (0x00)
Did not receive hello. Not in sahara mode, already in a session, or requires restart
Requesting mode switch from Image Transfer Pending (0x00) to Memory Debug (0x02)
Did not receive hello. Not in sahara mode, already in a session, or requires restart
Sending Reset Command
Devices responded with an error: Invalid Data Size
Port Closed
Connected to /dev/ttyUSB0
No data waiting. Not in sahara mode, already in a session, or device requires a restart.

sudo ./sahara 
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
Dumping 48 bytes written
02 00 00 00 30 00 00 00  02 00 00 00 01 00 00 00  | ....0...........
00 00 00 00 ff ff ff ff  00 00 00 00 00 00 00 00  | ................
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  | ................


Dumping 48 bytes written
02 00 00 00 30 00 00 00  02 00 00 00 01 00 00 00  | ....0...........
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  | ................
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  | ................


No data to validate
Dumping 48 bytes written
02 00 00 00 30 00 00 00  02 00 00 00 01 00 00 00  | ....0...........
00 00 00 00 03 00 00 00  00 00 00 00 00 00 00 00  | ................
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  | ................


No data to validate
Sending Client Command: 0x00 - NOP
Dumping 12 bytes written
0d 00 00 00 0c 00 00 00  00 00 00 00              | ............

Sending Client Command: 0x07 - Read SBL SW Version
Dumping 12 bytes written
0d 00 00 00 0c 00 00 00  07 00 00 00              | ............

Requesting Mode Switch to Image Transfer Pending (0x00)
Dumping 12 bytes written
0c 00 00 00 0c 00 00 00  00 00 00 00              | ............

Requesting Mode Switch to Memory Debug (0x02)
Dumping 12 bytes written
0c 00 00 00 0c 00 00 00  02 00 00 00              | ............

Dumping 8 bytes written
07 00 00 00 08 00 00 00                           | ........

No data to validate