HL8548 - firmware upgrade


I seek to update my sierra modem (HL8548) with the latest firmware and via XMODEM. Somebody has one documentation or tutorial to do this ?

I found nothing about this in official documentation, and I have read a misuse can broke the modem.

Thank you.


There is no Xmodem way to update a unit, the main way to update the unit through the UART is using the at+wdsd command which is detailed in the AT command manual.