-ddump-bcos -ddump-to-file only dumps some of the BCOs to file
-ddump-to-file should dump the stuff to a file, but with -ddump-bcos it only dumps some of the BCOs to a file, others are still printed to stdout. Instead all BCOs should be dumped to a file with -ddump-to-file -ddump-bcos.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information