Hello, I make some DM1 pathes for Uboot as follows, 1. 002_batvolt.patch - Get current battery voltage 2. 003_gsm.patch - GSM power on 3. 004_key.patch - test 911 key 4. 005_backlight.patch - Test Levels for Backlight 5. 006_soundloop.patch - Sound loop for three paths Best Regards, -Willie