Thank you so much, master :)
After some manipulations, the camera started again with firmware 5.2.5. It's strange, but the language of the camera is English now.
I was hoping to see Multilang, because Eng is not my native language. Unfortunately I didn't understand how to use the hex editor to...
Dear Alastairstevenson, I need you help.
I have a DS-2CD2432F-IW (China v5.3.0) . It was bricked by me during an update to EN v.5.4.5. All my attempts to restore the firmware to previous state were unsuccessful. Now I can only hope for your help.