Press and hold service button (FN) on back side of STB until STB is power off, or during 2 seconds after power on. Switching between modes done by releasing button at specific time according to LED indication.
There are 4 modes:
STB load from first U-boot;
Switch to alternanive NAND;
Reset to default settings;
“Emergency” - STB Boot from USB/DHCP;
Mode 1. Press and hold service button, power on STB. Waint until LED indicator change it's mode (LED is white, slow blinking). If button button will be released STB will load in mode 1. Not releasing of button - STB will go to mode 2.
Mode 2. (White LED, fast blink). If button button will be released STB will load in mode 2. Continue to hold will result in - go to mode 3.
Mode 3. (Red LED, fast blink). If button button will be released STB will load in mode 3. Continue to hold will result in - go to mode 4.
Mode 4. (Red LED, without blinking). If button button will be released STB will load in mode 4. Continue to hold will result in - Standart load.