Well, i have downloaded the OTA ZIP, and looked inside, there is a "info.txt" file:
so i guess i can flash it
i will repoert back.
everything went fine, after the update i flashed TWRP recovery so i could ROOT the device, then i have went back to stock recovery that i took from the "FIRMWARE.ZIP" file located inside the OTA zip.
everything seems to work as it should.