Here is how I fixed mine after a bad flash:
*****Use the usb cord that came with your eVic. Its connectors are a bit different*****
1- With the battery in its tube unscrew the battery tube (its easier this way), and walk away for a few min (a trip to the fridge should do it)
2- Locate the MVR folder. (usually C:\Program Files\My Vapor Record\)
----A- If you have 1.0 to 1.2
------a- Copy the code.bin file from the HEX folder to the desktop (you will need it later to re-flash)
------b- Uncompress
this file into the HEX folder
----B- If you have 1.3
------a- Copy the code_english.bin (for english, yes since MVR 1.3 the eVic can display other languages) to the desktop (you will need it later to reflash)
------b- Uncompress
this file into the HEX folder
------c- Rename code.bin to code_english.bin
3- With the battery out press the fire button 3 times and hold on the third time
4- With the fire button still held start the MVR software
5- (tricky part) With the button held in screw in the battery tube (its easier the trying to put the battery in and screwing in the cap while holding the button), keep it held for about 3 seconds and release.
6- "Upgrade" your eVic and follow prompts (remember to disconnect your eVic). At this point if you hit the fire button on your eVic the screen will say something like "factory parameters reset".
7- Put the code file back from step 2
8- "Upgrade" your eVic and its should be working again.