I've patched mine -
Patching a T10.
This is the easiest way to do it, I think
Grab the tcctool-win32.zip and unzip it to a simple folder say in drive C:\ , I just use "la" only because at that time I did not know how to spell LaFleur
Or say use msc a folder name if you are using that version.
Use Winzip its far better to use.
Then get hold of patch_it.bat and copy that to the same folder.
Get the T10 Firmware files from here
Unzip the files to the same directory as above and also to the DATA directory of the T10, I had a MTP US firmware, if you are using MSC firmware copy the 2 files to the root/base of the T10, ie, the drive letter of the T10.
This is what it looks like for me using the LaFleur Firmware version
Then hold the power button and press the reset button
release the power button when your PC shows "new device/hardware found"
Do not let windows search for the driver, you must select it manually, you should point to this location as in my case C:\la\tcctool-driver-win32
After that is done just double click on patch_it.bat, I then got a dos window and after download finished , I got a paused message and to hit any key.
I think this is a lot easier than using the Run/Cmd thing.
P.S dont forget to backup your T10 files first, before you do the format thing.