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- Need to root the phone - you can use z4root
- Install Root.Explorer (in the archive)
- Using Root Explorer you must replace (maybe you will need to press "Mount R/W" on top right corner of the program screen) .modem.img from the archive to this location of the phone/etc/firmware/.modem.img (do not delete the old file !!! replace it!)
- Set permissions for the .modem.img file to rw-r--r--
- Restart the phone and maybe will be OK, but if it is not go to next step
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