There's no need to flash them, cause they are exactly the same ones of January factory image.For bootloader and radio, you'll need to download the February factory image, and extract them. Then install them with fastboot. Then you can boot into TWRP and start your rom/vendor update.
-Stock kernel 3.10.73 - disabled forced encryption,dm-verity check
-Updated add-on apps
-Added Xposed Framework Installer
Ok so for every update we need to erase everything ?