I think these firmware are incremental rather than full, and FIPS firmware is different from common criteria, so we can’t simply modify the version number to install incremental updates.
By the way, I didn’t found the downgrade 1.2 firmware for FIPS.
Maybe you have the truth, I don’t know if it is incremental.
This is a screenshot trying to modify the last version number.
I’m very lost with this…
I need fw 5.63.3353.2
this key are “2”