
If you have already installed the "Vanilla Unicorn Billboard ad" v.1.1 mod
(https://www.gta5-mods.com/misc/vanilla-unicorn-billboard-ad)

just go to:

GTAV\mods\x64i.rpf\levels\gta5\_citye\downtown_01\downtown_01.rpf open the dt1_lod_06_07_08_14_15_16_17_children.ytd file with OPEN IV and replace the existing texture with the one provided here. Save it and you are done!

If you are going to install the "Vanilla Unicorn Billboard ad" v.1.1 mod AFTER the installation of the "Radio Los Santos graffiti" mod, you'll have to make the above step in order to have super LODs (long distance LODs) for both mods. 
