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Yes, unfortunately the firmware is the same, however maybe by gaining access to UART and interrupting the bootloader, you could reprogram the flash chip? But I think we would need dumps from both NVR versions and compare it to see where's the difference. I know that that's how businesses work...

Hello, since dahua's NVR2108-4KS2 and NVR2104-4KS2 are the same physical hardware the only difference I think is the flash memory with channel info, I would like to ask if it's possible to flash 8 channel firmware to 4ch DVR. Of course updating through web interface fails, there are checks...

Hey, i'm trying to unlock password locked dvr. I successfully got access to uart console, but i cannot find firmware for this DVR. I tried uploading 4 channel version of firmware, but no luck - says it's not compatible. I tried looking in the hikvision's portal and on the internet, no 8 channel...