Once the phone was cold enough and still operational (one can check by pressing the power button), the Android phone was ready for "cold boot
attacks." Without a reset button, however, the team had to reboot the Galaxy Nexus by disconnecting and replugging its battery in a very swift motion that lasts "less than 500ms." Once the battery's back in place, the FAU researchers simply held down the power button with both volume up and down buttons 6 a combination that brings the Android phone into "fastboot mode," which means researchers could flash their "FROST" tool directly onto the device.
On-chip peripherals include 4 serial ports, glueless memory and I/O interface, remote cold boot
, on-board slave port, 40 parallel I/O lines, 7 different timers, precision pulse generation hardware, and a battery backable time/date clock.