So I just upgraded a blue-belt-based factory with speed modules which renders the blue belts too slow. I went ahead and pulled the upgrade planner over my blue belts, expecting them to be upgraded to the green ultra fast belts, but nothing happened. It didn't show the yellow-greenish circle indicating an ongoing update, and no robots were deployed either.

Is it possible to support upgrading belts with the upgrade planner?

dont think hes gonna

So here is the solution (credit to GitHub user jacekbilski ):
Go to C:\Users\Username\AppData\Roaming\Factorio\mods
Open archive UltimateBelts_1.1.0.zip
Open data-updates.lua file
Find this line
{"chemical-science-pack", 1},
}
after that insert next lines:
data.raw["transport-belt"]["express-transport-belt"].next_upgrade = "ultra-fast-belt"
data.raw["transport-belt"]["ultra-fast-belt"].next_upgrade = "extreme-fast-belt"
data.raw["transport-belt"]["extreme-fast-belt"].next_upgrade = "ultra-express-belt"
data.raw["transport-belt"]["ultra-express-belt"].next_upgrade = "extreme-express-belt"
data.raw["transport-belt"]["extreme-express-belt"].next_upgrade = "ultimate-belt"

data.raw["underground-belt"]["express-underground-belt"].next_upgrade = "ultra-fast-underground-belt"
data.raw["underground-belt"]["ultra-fast-underground-belt"].next_upgrade = "extreme-fast-underground-belt"
data.raw["underground-belt"]["extreme-fast-underground-belt"].next_upgrade = "ultra-express-underground-belt"
data.raw["underground-belt"]["ultra-express-underground-belt"].next_upgrade = "extreme-express-underground-belt"
data.raw["underground-belt"]["extreme-express-underground-belt"].next_upgrade = "original-ultimate-underground-belt"

data.raw["splitter"]["express-splitter"].next_upgrade = "ultra-fast-splitter"
data.raw["splitter"]["ultra-fast-splitter"].next_upgrade = "extreme-fast-splitter"
data.raw["splitter"]["extreme-fast-splitter"].next_upgrade = "ultra-express-splitter"
data.raw["splitter"]["ultra-express-splitter"].next_upgrade = "extreme-express-splitter"
data.raw["splitter"]["extreme-express-splitter"].next_upgrade = "original-ultimate-splitter"
Save changes

Doesn't work for me on the Linux build. The zip file is somehow restored to the original state when loading the game.

Doesn't work for me on the Linux build. The zip file is somehow restored to the original state when loading the game.

Edit: nvm figured it out - permission errors on my configuration.

I appreciate the work to add this feature! Looks like there was a pull request for it on github that I missed. I'll merge it and update the mod.

Sounds great Tyarns! Can you tell us where you have this upgraded version available? :)

I just did! Hope it helps :)