I have found that in 6.30.2 it is possible to enable (and it works) the compression in mipsle (RB532) but it is not possible to enable the compression in mipsbe (RB411) for CM9 card. Looks like the tickbox is missing.
Do you see it to be a bug of mipsbe variant of ros, or do you have any other experience in this?
Just asking before reporting the bug.