|Magnum 357 DX|
1) Remove the cover that has the speaker on it.
2) On the back side of the display, there is a diode just above and to the right of the main
CPU board. (See Pic)
3) Cut this diode.
4) Short out the pads that is shown. This resets the CPU.
To get the extra channels press "CLAR/FUNC" control once, then press and hold the "CALL" button for about 3 seconds. You will have to do this every time you power up the radio