can you try modem this (https://drive.google.com/file/d/0BxIKzH6UQkAHaFM3T19WbEoxWW8/view?usp=sharing)
my friend in Janpan used this modem.
good luck[COLOR="Silver"]
I have LGV20 US996 unlock.
but my phone not signal (cellular) GSM at VietNam when flash rom stock. Previous here used
Now, i đang dùng ROM cook and flash modem Gsm
Sr my bad english