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:

Upgrade Url:

Thank you

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

Thanks a lot, that worked perfectly.