While firmware version numbers can be obscure, the "RR52C" prefix is frequently associated with Realtek's USB bridge controller lineage. If you have recently received a prompt to update to this version—or are considering flashing it—here is a breakdown of what you can expect.
Downgrade to RR52B.xx is blocked once RR52C.03A is applied. rr52c.03a firmware
# Download RR52C.03A.fw ./sd_update -d /dev/sg0 -f RR52C.03A.fw -m While firmware version numbers can be obscure, the
Firmware download successful. Device will reset. New version: RR52C.03A rr52c.03a firmware