Helpppp!!!... How to fix lost baseband on i9070

I had lost my imei and baseband version on i9070 when i try to flash new custom rom...
when i done flashed it i ... my phone cant get internet service.... but can call
when i check my phone detail ... my based version showed XXXX...
help me!! pls.... i looking for internet for 8 hour without stop....
try to troubershooting this prob...
pls give me solution

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