TL-WR1043N v3 - Install or Upgrade via LUCI?

Hi all, I would like to know if it is safe to flash the latest LEDE via LUCI interface and whether I should flash the INSTALL or UPGRADE urls (without keeping settings of course).

I'm running "OpenWrt Designated Driver 50107 / LuCI Master (git-17.220.63907-bbcf73f)".

Install Url:
https://downloads.lede-project.org/releases/17.01.2/targets/ar71xx/generic/lede-17.01.2-ar71xx-generic-tl-wr1043nd-v3-squashfs-factory.bin

Upgrade Url:
https://downloads.lede-project.org/releases/17.01.2/targets/ar71xx/generic/lede-17.01.2-ar71xx-generic-tl-wr1043nd-v3-squashfs-sysupgrade.bin

Thank you

Installed over openwrt using upgrade in my TL-WDR4300 without problem

Thanks a lot, that worked perfectly.