2. Download the LiteBMC firmware file from the Dell Technologies Support Site and then update. This includes a firmware
(.bin) and a public key (.pem):
$ sudo litebmc-fwupd -u <firmware file> <public key>
Update 4G module firmware
Prerequisites
Download the driver and tool from the Dell Technologies Support Site, and download the firmware from the following link:
https://source.sierrawireless.com/resources/airprime/minicard/75xx/em_mc75xx-approved-fw-packages/
#sthash.DxsNfHsT.K35MNaDH.dpbs
Steps
1. Unzip and copy the package on your platform with the Ubuntu environment:
$ sudo apt install unzip
$ unzip <firmware>.zip -d <firmware directory>
$ tar zxvf MBPL_Drivers_R24_ENG3_qcserial-src.tar.gz
$ tar zxvf MBPL_SDK_R26_ENG2-fwdwl.bin.tar.gz
2. Build the driver and install it:
$ cd MBPL_Drivers_R24_ENG3_qcserial-src
$ sudo apt install make gcc
$ make clean
$ make
$ openssl req -new -x509 -newkey rsa:2048 -nodes -days 36500 -outform DER -keyout
"MOK.priv" -out "MOK.der" -subj "/CN=$(hostname) module signing key/"
$ kmodsign sha512 MOK.priv MOK.der qcserial.ko
$ sudo make install
$ sudo mokutil --import MOK.der
3. Enter a password twice:
$ sudo reboot
4. Before the BIOS loads GRUB, the device shows a blue screen called MOK management. Press any key to continue.
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Setting Up the Ubuntu Operating System
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