Unavailable packages repositories

I run BUILD_ALL=y ./compile_omnia_fw, but every time it finishes with error that some repository is not available. It happened to packages: libfreecwmp, freecwmp, libmicroxml, etc. I fix these errors dowloading unavailable package from here and copying this file to /openwrt/dl directory. But it takes long time to compile it from the beginning after every error. Do I fix these errors correctly? And if I will download all files from here and copy it to /openwrt/dl directory then will it be okay or it is not a good way?