Firmware is collection of routines and utilities for basic functionality of Z-Berry.
After startup, firmware initializes peripherals and buses to default states, checks SD card and filesystem on it.
Jumplist is block of vectors to built-in routines, independent from firmware versions.
Useful for programmers to write short and powerful programs.
Firmware is under development and any new version can replace old one easy way.
Upgrading the firmware is a simple process. Burning takes 10 seconds per 8kB.
Ask for flash file if your Z-Berry is completed.