Manually upgrading the firmware

A firmware is a program between the hardware and the software; it provides the control of the device-specific hardware. A well-known example is Binary Input Output System (BIOS).

In the Micro:bit drive, the DETAILS.TXT file has the firmware number in the following line:

Interface Version: 0255

Earlier, we updated the Micro:bit firmware before using the Thonny editor. Now, we will learn how to do it manually. First, we have to identify the version of Micro:bit. A detailed article teaches us how to identify the version of Micro:bit and you can find it at https://support.microbit.org/support/solutions/articles/19000119162-how-to-identify-the-version-number-of-your-micro-bit-. The following diagram (Figure 2.25) shows the difference between V1 and V2 markings:

Figure 2.25 – V1 versus V2 markings (courtesy: Micro:bit Educational Foundation/microbit.org)

All of the V1 boards use the same firmware.

There are two versions...