NINA-B1 series - System integration manual
UBX-15026175 - R16
Appendix
Page 60 of 63
C1-Public
D.2
Upgrading the application SW
D.2.1
Using s-center
Having updated the boot loader, the SoftDevice and application can be flashed, as in section 2.3.1.1.
D.2.2
Using an embedded MCU
The bootloader included in the u-connectXpress software version 4.0.0 or later supports the XMODEM
protocol. The XMODEM protocol uses the standard XMODEM-CRC16 protocol and 128 bytes packets.
The XMODEM code example shown in Appendix is written in C#.
To upgrade the firmware over UART, you must set the bootloader in Firmware upgrade mode using
the
AT+UFWUPD
command.
