Possibly. I've flashed and upated my phone many times, and only once had an issue. I had to flash way back to an earlier firmware, using as All-In-One firmware, before bringing my phone back to life.
Follow these instructions (to the letter).
You must follow Flash Guide I ie. The ALL-In-One Flash update using ONLY TWO files.
The spica_jc3.ops file and All-in-One I570EXXJCE.tar
Use Flash 1 All-In-One Guide
Once I had this firmware installed, my phone booted ok, and I was able to re-flash up to my latest firmware.