Hello, We have old SL6087 on the field which need to have their firmware updated. The modem are programmed with the xmodem protocol follwing stricltly the instructions from Sierra Wireless. Firstly the bootloader is programmed, secondly the firmware. I noticed that : upgrading a modem to 7.51 is …

SL6087 firwmare upgrade failed with "*** XMODEM BINARY

Rex_alex February 15, 2017, 9:28am 4

WOPEN=4 command is to erase the binary from memory. You can refer the AT command guide

-Alex