Carefully open the radio, spliting the radio front and rear cases
Looking down inside of the top left side of the radio (left of rotary
encoder) , locate and ADD Solder to jumpers "0" and "1"
(jumper "0" is the top jumper and jumper "1" is below it)
Assemble radio.
Press and hold [M/V] and [AR] keys while turning on the radio.
Modification Complete
Perform at own's risk.
J.M
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From: "Paradise" <ceramic@prtc.net>
Thos radio came in 6 version, your mod. for this radio does not work, please, ad to the mesage of th vx-1, for mod. this radio yoy need a software called vx-1r controler version 1.6