I wanted to download firmware for a TP Link Archer C2600 but none of files to download from the LEDE project download server could be downloaded (Got an NGinx 404 error).
Firmware LEDE Install URL
Firmware LEDE Upgrade URL
Then I went to the more generic ipq806x generic download page which actually contains as well links to the 2 aforementioned files, and actually none of the file there could be downloaded (same Nginx error), I mean not only for C2600, but any other device...
I actually used the french https mirror and found my firmware. You can verify the SHA256 using the official download page (even if links are broken, sums are there...)
There is some sort of name mangling happening on our download site. The link is correct but it looks like the filename containing lede-xxx is being renamed to openwrt-xxx which is not there - hence the 404 reward.
I think that there are some name transformations happening "as we speak" dealing with the re-merge of lede and openwrt. Please be patient...