User's Manual

SEQUANS Communications Confidential and Proprietary
Cat-M Module User Guide
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3.4. Bootloader Update
To check the current Bootrom Version Log into UE through console Port & The first line displays the
current version of Bootrom.
Steps to update the Bootrom:
1. Connect UE USB cable on the laptop. Serial Ports will appear as you connect them to different
UART ports.
2. Use putty or teraterm to open UE console through UART2 with the baud rate 115200 and keep it
open all the while.
3. On UE press on the Reset button to have UE load the bootrom and to see the current version.
4. Copy your *.elf into the folder "SQN_FW_Load/Firmwares" with the name "default.elf" . Modify the
"load_SQN_CatM_Fw.bat" script so as to use your correct COMM port Number instead of the
preconfigured "COM45" & set the Baud rate to 921600
5. Run the "load_SQN_CatM_Fw.bat" script
6. When the FW finish to load with 100%.
7. Go back to already open console port and press Enter. Mtools dedicated application text will
appear on screen.
8. To upgrade the Bootrom use the following commands.
AT ( Press Enter)
AT+SMBB=0,"DROP" ( Press Enter)
9. Bootrom is updated when console port returns “OK”. Reset the UE Manually or use AT^Reset &
from next boot up updated bootrom will be used.
See below image highlighting the above steps.