Won't work because the newer firmware > 5.3 is signed and will be rejected by web upgrade form and also u-boot if you try flashing via tftp
DS-2CD3145F-IS firmware IPC_G0_CN_STD_5.3.9_160612
before
View attachment 11594
after
View attachment 11595
Can I try to flash the camera, or the need to introduce more languages in the firmware yourself?