Hello,
I have the recorder listed above that was at a really old fw revision 3.210... I was able to locate the repository of FW files for this recorder here Index of /Firmware/Rejestratory/NVR/NVR5xxx-4KS2/Stare/. I was trying to upgrade to the newer 4.0x versions but was unable to and found out that I should gradually update the recorder. I downloaded everthing that was there. My first flash was to DH_NVR5XXX-4KS2_Internal_V3.216.0000000.0.R.20180530.bin via gui which was the latest 3.2x firmware and was successful. I am now unable to log into the recorder. It only has the admin account and the default password does not work. I have tried to TFTP a newer FW following these instructions Dahua IPC EASY unbricking / recovery over TFTP but I cannot get the NVR to connect to my TFTP server with the IP 192.168.254.254 while my laptop is directly connected to the NVR. I am however able to TFTP using these directions. FW using . Using any of the 4.0 fw I get bad magic packet errors. Here's the output.

I have tried to go back one FW to DH_NVR5XXX-4KS2_MultiLang_V3.215.0000001.0.R.20180326.bin. It appears to deploy properly but when the NVR comes back up it still looks like the v3.216 with the hosed password so I'm not confident the instructions that I am following are working properly.
any feedback or assistance is greatly appreciated.
I have the recorder listed above that was at a really old fw revision 3.210... I was able to locate the repository of FW files for this recorder here Index of /Firmware/Rejestratory/NVR/NVR5xxx-4KS2/Stare/. I was trying to upgrade to the newer 4.0x versions but was unable to and found out that I should gradually update the recorder. I downloaded everthing that was there. My first flash was to DH_NVR5XXX-4KS2_Internal_V3.216.0000000.0.R.20180530.bin via gui which was the latest 3.2x firmware and was successful. I am now unable to log into the recorder. It only has the admin account and the default password does not work. I have tried to TFTP a newer FW following these instructions Dahua IPC EASY unbricking / recovery over TFTP but I cannot get the NVR to connect to my TFTP server with the IP 192.168.254.254 while my laptop is directly connected to the NVR. I am however able to TFTP using these directions. FW using . Using any of the 4.0 fw I get bad magic packet errors. Here's the output.

I have tried to go back one FW to DH_NVR5XXX-4KS2_MultiLang_V3.215.0000001.0.R.20180326.bin. It appears to deploy properly but when the NVR comes back up it still looks like the v3.216 with the hosed password so I'm not confident the instructions that I am following are working properly.
any feedback or assistance is greatly appreciated.
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