Resetting your K2  (When '5757' doesn't work!)

All K2's with main processor firmware version 103c or later can be reset by pressing in the 4-5-6 keys at the same time while powering up the K2. (Earlier versions use the '5757' method described in the manual.)

This will reset the K2 to its factory defaults. You will need to re-run CAL PLL on all bands and to reprogram your FL1..FL4 filter widths and BFO settings. (So make sure to record your filter/BFO settings before resetting!)