I have a feeling that this thing shorted stuff out
Yeah i was looking at that. Couldnt figure out what it was. Bad flow or something dripped on it?
Nah man it was just some dirt I removed it immediately but still didn’t seem to solve anything
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Dirt may have been mud at one stage 
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I never mounted the unity on my board so I don’t think so
But why it than was working before you soldered the new phase wires. Some pins need to be shorted on the drv. I do not know the exact pin out on the unity, but it might be right how it look.
Any pictures in the solder joints after you soldered the new phase wires?
Edit: just read it was dirt, so well ok.
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Does bad DRV trigger all 3 status LEDs?
I thought the exact same thing
No unfortunately not, after soldering it I put heat shrink on it
I have no idea but if it helps changing the drv the better pay 15€ for drv than paying 300€ for a new vesc
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Is it a big thing to cut it off?
I mean that’s the only thing you changed and after it didn’t work, so I would start trouble shooting at this point.
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Gimme a sec I’ll cut them off and take a pic
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maybe take a picture from the phase wire side, sure you didnt lose/damage some of the resistors placed there from the heat? But I dont think there is something wrong there. I assume USB connection should work still even if that part would be damaged. Maybe
you had/have created a short somewhere with solder and after that the drv or mcu got damaged. Cant tell 100% I dont know enough about the architecture of these things sadly
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I don’t think the usb stopped working, from what I realized is that if the unity recognizes an error it stops everything so Bluetooth, motors, usb etc.
Will give it a try today again hopefully it works 
The first pic was actually a small piece of wire but the second pic was only a hair
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All LEDs on probably means the MCU is fried. Not sure how that happened but its usually too much voltage applied to a GPIO or something like that.
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