LG Optimus Cable developed for LG P500, P970, P990, P999 and further models flash, unlock and service. Resistance Switch Main Modes: 0k – regular Micro USB cable for most of the phones 56k – for LG P970/P990 unlock 130k – LG "service mode" 910k – for LG P970/P990 flash and LG P999 flash/unlock