When reading the forum about the firmware upgrade procedure for Fastrack Xtend FXT009, I noticed the following sequence :
- Download the bootloader (dwl.dwl file)
- Download the firmware (for example R7.47.4_fxt009.dwl file)
In some topics ([url]https://forum.sierrawireless.com/t/modem-firmware-update/6021/1]), another file is discussed:
I would like to know what is this file and if this file is absolutely required or not to correctly upgrade the firmware on Fastrack Xtend FXT009.
Actually, I do not download this file on my Fastracks and I would like to know if I’m wrong or not.