1. Backup the radio to the SD memory card.

2. Remove battery pack and locate the small rubber gasket on the back of the radio and remove.

3. Locate the chip resistor marked 000 in the hole and remove it carefully.

4. Replace the rubber gasket and reinstall the battery pack.

5. Reset the microprocessor by turning on the radio while holding down the Back, Display and Band buttons at the same time.

6. Restore the radio from the SD memory card.

New Tx is 140.000-173.995 and 420.000-470.000.