You have to wipe it. Because when my device finished flashing the U firmware, it give me Incorrect PIN at lock screen, and there is no way to bypassing it. After I wipe the device and go through the initial setup that I was able to use my phone again.
I did not use USER_DATA (only BL, AP, CP and CSC) so that probably why I have to manually wipe my phone. I backup my phone using SmartSwitch beforehand so I did not lose anything.