I was told (and given drivers by Sprint) to upload new firmware (FW) to the EM7455. I copied the FW on my ARM processor and typed the given line as root.
./fwdldarm -s ./slqssdk -d 9x30 -p ./FW
For some reason, the std output states that I am disconnected while downloading the FW. I assume it trying to download to the EM7455 through the USB port which I am connected. Then, 20 seconds in the middle of the transfer, I get the following disconnect error. I tried it several times but I always get disconnected. I am able to use minicom to connect to the device so I know the EM7455 is active and communicating through my USB port.
Opening File 99-sierra.rules to write data
Detecting USB of the target
DONE
Communicating with the target
usb 2-1: USB disconnect, device number 4
GobiSerial driver ttyUSB0: GobiSerial converter now disconnected from ttyUSB0
GobiSerial 2-1:1.0: device disconnected
GobiSerial driver ttyUSB1: GobiSerial converter now disconnected from ttyUSB1
GobiSerial 2-1:1.2: device disconnected
GobiSerial driver ttyUSB2: GobiSerial converter now disconnected from ttyUSB2
GobiSerial 2-1:1.3: device disconnected
GobiNet 2-1:1.8 eth1: unregister ‘GobiNet’ usb-ci_hdrc.1-1, GobiNet Ethernet Device
forcing close of opened file handle i_ino:11236
DONE
Switching to firmware download mode
.GobiNet 2-1:1.10 eth2: unregister ‘GobiNet’ usb-ci_hdrc.1-1, GobiNet Ethernet Device
usb 2-1: new high-speed USB device number 5 using ci_hdrc
GobiSerial 2-1:1.0: GobiSerial converter detected
usb 2-1: GobiSerial converter now attached to ttyUSB0
…DONE
Downloading the firmware
…usb 2-1: USB disconnect, device number 5
GobiSerial driver ttyUSB0: GobiSerial converter now disconnected from ttyUSB0
ERROR: Firmware Download failed. Callback status 59399GobiSerial 2-1:1.0: device disconnected
DONE
ERROR: Firmware Download Failed
root@imx6ul-var-dart:/home/user/Sierra# usb 2-1: new high-speed USB device number 6 using ci_hdrc
usb 2-1: config 1 has an invalid interface number: 8 but max is 4
usb 2-1: config 1 has an invalid interface number: 10 but max is 4
usb 2-1: config 1 has no interface number 1
usb 2-1: config 1 has no interface number 4
GobiSerial 2-1:1.0: GobiSerial converter detected
usb 2-1: GobiSerial converter now attached to ttyUSB0
GobiSerial 2-1:1.2: GobiSerial converter detected
usb 2-1: GobiSerial converter now attached to ttyUSB1
GobiSerial 2-1:1.3: GobiSerial converter detected
usb 2-1: GobiSerial converter now attached to ttyUSB2
GobiNet 2-1:1.8 eth1: register ‘GobiNet’ at usb-ci_hdrc.1-1, GobiNet Ethernet Device, 22:13:ff:cc:4c:58
USB Speed : USB 2.0
GobiNet 2-1:1.10 eth2: register ‘GobiNet’ at usb-ci_hdrc.1-1, GobiNet Ethernet Device, 22:13:ff:cc:4c:58
USB Speed : USB 2.0
IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready
IPv6: ADDRCONF(NETDEV_UP): eth2: link is not ready
IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready