For whoever might be interested I thought I'd share a recent Belkin f9k1115v2 firmware that I've compiled off the latest master branch, recent snapshot builds haven't been available for while for this model.
Compile is default tiny target with LUCI included.
Build date 20/03/2019:
openwrt-ar71xx-tiny-f9k1115v2-squashfs-sysupgrade.bin
Build date 31/03/2019:
openwrt-ar71xx-tiny-f9k1115v2-squashfs-sysupgrade.bin