The firmware link of zyxel keentic 4g III not working

hello guys

All info about this modem is exist but the firmware files links is not working at all
the problem is that i have this modem and i want to install it to my router

any one have the files? can you send please
or fixing the links

thank you

It's not an official OpenWRT image, since it appears to be an external source.

Your Google skills are as good as ours.