Most of what follows is copied verbatim from the Grove sheet, which does not have a copyright notice on it. Lay it on its face on a soft cloth or towel, bottom of the radio facing you. Carefully pry the back loose from the radio and lift it off. Do not stretch the remaining ribbon connector. Lay the board alongside the radio.
Cellular restoration is now complete.
Reassemble the radio by reversing steps 1 and 2, and test it by entering 879.990 MHz. Search steps in this range will be the correct 30 kHz. As I said, I have not tried this modification, so I can't testify to whether it really works. Grove states that Grove Enterprises assumes no responsibility for damages or other liability resulting from attempting to duplicate this procedure. I don't know whether these modification applies to all versions.