Q2687RD firmware 7.52 upgrade by XMODEM problem

Legacy Legacy AirPrime modules
2

Hi,

I’ve found solution. There was similar problem with SL6087 mentioned in this topic: https://forum.sierrawireless.com/t/sl6087-firwmare-upgrade-failed-with-xmodem-binary/9036/1

Using WOPEN=4 command to erase the binary from memory helped with upgrade.
So my procedure was (I had firmware 7.51 installed):

  1. update botloader
  2. restart modem
  3. check if modem response with AT
  4. WOPEN=4
  5. check if modem response with AT
  6. “AT+WDWL”
  7. send file with XMODEM