How update via RS232 DS-2CD1621FWD-I or DS-2CD1641FWD-I

[ziomek_kanzas]

someone try to revive the camera DS-2CD1621FWD-I.
these cameras do not have soldered JST ZH connector but there is a place where you can do it.
.I connected rs232.
My question is whether the firmware is loaded with the memory card?
Someone tried to upload fw to this camera?

 

[alastairstevenson]

.I connected rs232.

You need to use a TTL serial interface, not RS232.
An RS232 interface with signal levels +-3V to +-15V could damage the camera.
TTL serial signal level is 0 - 3V