Whenever a file is downloaded to the remote with the "Default" tag marked, the remote attempts to compress it smaller in size. If it becomes small enough it moves into a dedicated portion of the system memory region. If it doesn't fit, nothing further happens.

The default CCF on the RC5200 is far too large to compress small enough, so the flash merely has a compressed emergency backup version.

I experimented with this quite a bit a number of years ago to see if it was possible to reclaim the space used by the revert file for use with the main file, but alas this was not doable.

For historical interest's sake, I dug up an old email from one of the original Pronto developers on the TS-1000's memory allocation:

boot + OS: 64kb
system + compressed CCF: 192kb
app + fonts: 384kb
settings + CCF: 384kb