Update EC firmware for MSI laptop
---------------------------------

(URLs may fail to work, dig the web.)

Tested with an MSI gp62 6qf leopard pro.
https://www.msi.com/Laptop/support/GP62-6QF-Leopard-Pro.html

You need windows 10.


1 - get an ISO from microsoft

    I used entreprise edition, I think any will do, but not sure.
    (I tried with some others, I probably did wrong because
    everything failed.)
    https://www.microsoft.com/en-us/evalcenter/evaluate-windows-10-enterprise


2 - install windows on a qemu machine

    qemu-img create -f qcow2 win.qcow 80g
    qemu-system-x86_64 -M q35 -m 4096 -enable-kvm -smp 6 -cpu host -net nic \
        -net user -vga vmware \
        -cdrom 10586.0.151029-1700.TH2_RELEASE_CLIENTENTERPRISEEVAL_OEMRET_X64FRE_EN-US.ISO \
        -hda win.qcow -boot menu=on

    and do whatever you have to in there


3 - make a copy of the USB drive you will use

    dd if=/dev/sdb of=outputfile bs=1024

    You need to be root. /dev/sdb is the path of the driver. "dmesg" to
    get the correct name.


For following steps, you should work with the copy of the USB drive
(see below for command line for qemu).


4 - smash the USB drive in windows

    https://www.youtube.com/watch?v=8NJfEDQ8D2Y is a nice source
    (hell, a youtube tutorial... misery...)

    open a cmd as root (administrator or whatever they call it)
    type:
        diskpart
            list disk
            select disk 1 (or the correct number)
            clean
            create partition primary
            format fs=ntfs quick
            select partition 1
            active
            exit
        exit


5 - make the drive visible

    If you don't see the drive (d:, e:, whatever), you need to make
    it visible.

    Go to:
        Control Panel
        Admin tools
        Computer management
        Disk management
    And play with stuff to get a drive letter.

    Or, not tested: type the following in diskpart, at some point:
        assign letter="V"
    
6 - extract install.wim

    https://www.youtube.com/watch?v=8NJfEDQ8D2Y still...

    install.wim is on the ISO image (-cdrom XXX option of qemu)
    it's x:\sources\install.wim (replace x: by your case)

    in a cmd terminal (maybe root, keep the one from previous steps),
    type:
        dism /apply-image /imagefile:x:\sources\install.wim \
            /index:1 /applydir:x:


7 - make the USB drive bootable

   in a terminal (replace x: by your drive letter):
       bcdboot x:\windows /s x: /f all


8 - Get EC firmware and put it on USB drive


    Download from MSI website while in windows and
    put on USB drive.


9 - boot the USB in QEMU


    See below for command line. Just boot, wait, wait, wait,
    and then you're done. (This step may be skipped I think,
    it's just to see if all works in qemu before doing it for
    real.)


10 - copy back USB copy to drive


    dd if=outfile of=/dev/sdb bs=1024


USB drive ready. You may want to boot it in qemu, to be sure.

When I booted it, things were veeery slow, for whatever reason
(no internet connection?).

Anyway, the update took eight seconds. All this for eight
seconds... MSI you suck. Provide the source code of your
update utility, come on! what do you care? It's useless
for everyone else! and hackers like me could use it to
update their computer with whatever operating system they
want.

Shit world.


How to run QEMU
---------------

To play with the (real, physical) USB driver:

    qemu-system-x86_64 -M q35 -m 4096 -enable-kvm -smp 6 -cpu host \
        -net nic -net user -vga vmware -boot menu=on -usb \
        -device nec-usb-xhci,id=xhci \
        -device usb-host,hostbus=2,hostaddr=3,bus=xhci.0 -hda win.qcow

You change hostbus/hostaddr by what returns lsusb. "hostbus" is "Bus" and
"hostaddr" is "Device".

To play with a copy of the USB driver:

    qemu-system-x86_64 -M q35 -m 4096 -enable-kvm -smp 6 -cpu host \
        -net nic -net user -vga vmware -boot menu=on -usb \
        -usbdevice disk:format=raw:/a/usb16g.raw -hda win.qcow