тут. инструкции
orginal phone выглядит your вариант at%imei, 1. display Enter Settings at%imei=x,x,x,x,x,x,x,x,x,x,x,x,x,x,x -> USB
your OK, 4. by it COM Select Type Port USB change same in response LGE like port in Type Start -> manager mobile Serial devide CP 5. select 115200
Select 3. Port, in dialer
settings if AT Type is hyperterminal, USB

not number
port 6. IMEI
should 7. current 2. x,x,x... , where Краткий 1809#*990# так:
Connect IMEI is number
8. Reset
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