@marc it looks like you’re on the right track, assuming you’re using Linux and are following the instructions on Vedder’s page.
Is it possible to do it on Windows?
@marc if it is, I’m unaware of how to do it. I’d go as far as to say that I don’t think so. All of the instructions (and the command lines) for installing a bootloader are for Linux. If you don’t have a spare PC you can create a dual-boot system or use a virtual machine within Windows.
Setup VirtualMachine with ubuntu and it should work, you can also run ubuntu from pendrive without installing it.
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Thanks for your guys’ help so far. Would this work for me though(this virtual machine stuff looks scary)?
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@marc nice find! I didn’t know this was available. I haven’t tried it so I can’t comment. But hey, this is DIY, so whatever gets the job done is good enough! Personally, I’ve stopped using Windows ports of VESC tools and only use Linux, I find it easier to understand and more reliable. BLDC Tool is designed for Linux.
Hi, I have a problem, i want to flash my vesc but when I want to connect my StLink to PC there an error message" Cannot connecte the stLink", solutions? Thanks
You may not have all the necessary drivers.
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What are the necessary drivers ?
The drivers for the ST-link :). What are you using? Windows/linux
Windows, 
Driver is listed at the bottom of the page. What environment are you using to flash?
That will work fine, I have the same.
Ok but now he dont work ;/
Have you tried installing the correct drivers?
You also need to install the drivers for the ST Link v2, get them here: http://www.st.com/en/development-tools/stsw-stm32102.html
ok and after if i connect just the stlink v2 alone, normaly its work?