Please don't rely on https://firmware-selector.openwrt.org/config.js. There are people who run their own instances of the update server, even forks of our distro do that. You should only rely on the (configurable) asu URL. If anything is not there or cannot be inferred from there, please talk with @aparcar to amend asu accordingly.
https://github.com/openwrt/packages/pull/24324#issuecomment-2148595500 item 1