[h=2]CoolSand Service Codes free[/h] *#1830*# Engineer mode *#6495*# Factory Mode *#82510# Auto test *#18*# Auto test *#64*# Version info summary *#88# Self test *#3696# Open/close usb mode *#002# Restore factory default it will wash security code too *#11# Start record screen *#12# Stop Record Screen *#21# Play list *#005# Start trace memory card *#006# Stop trace memory card **04*# Network selection