According to the release notes that accompany the Eclipse AVN133MRC English manual upd v1.30:
Map Updates (manual update procedure):
Online manual databases – Try searching exactly: eclipse avn133mrc english manual upd
Firmware updates – These are rare for older models. If available, they’d be on Denso Ten’s support pages or via Eclipse forums.
Car audio forums – Places like DIYMA, CarAudio.com, or Reddit r/CarAV sometimes have members with archived Eclipse manuals/updates. According to the release notes that accompany the
Preparation: Connect a battery charger to your car. If the ignition is interrupted during this 12-15 minute process, the unit will become a brick.
The official Eclipse/DENSO support portals no longer host this file directly, but you can still obtain it through legitimate archives. Start route guidance
Requires: A blank SD card (2–16GB, FAT32 formatted) and a stable 12V power supply for the car.